fix timeline popover

.gitea/workflows/release.yml

@@ -29,8 +29,40 @@ jobs:
         run: |
           RAW_VERSION=$(awk '/^version:/{print $2}' pubspec.yaml)
           BASE_VERSION=${RAW_VERSION%%+*}
+          TAG="v${BASE_VERSION}"
+          if [ "${GITHUB_REF}" = "refs/heads/dev" ]; then
+            TAG="v${BASE_VERSION}-dev"
+          fi
           echo "base=${BASE_VERSION}" >> "$GITHUB_OUTPUT"
-          echo "release_tag=v${BASE_VERSION}" >> "$GITHUB_OUTPUT"
+          echo "release_tag=${TAG}" >> "$GITHUB_OUTPUT"
+
+      - name: Fail if release already exists
+        env:
+          TAG: ${{ steps.meta.outputs.release_tag }}
+        run: |
+          set -euo pipefail
+
+          if ! command -v curl >/dev/null 2>&1; then
+            if command -v sudo >/dev/null 2>&1; then
+              SUDO="sudo"
+            else
+              SUDO=""
+            fi
+            $SUDO apt-get update
+            $SUDO apt-get install -y curl ca-certificates
+          fi
+
+          URL="${GITEA_BASE_URL}/api/v1/repos/${{ github.repository }}/releases/tags/${TAG}"
+          CODE="$(curl -sS -o /dev/null -w "%{http_code}" -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" "$URL" || true)"
+
+          if [ "$CODE" = "200" ]; then
+            echo "Release already exists for tag ${TAG}; refusing to re-release."
+            exit 1
+          fi
+          if [ "$CODE" != "404" ]; then
+            echo "Unexpected response checking existing release (${CODE}) at ${URL}"
+            exit 1
+          fi
 
   android-build:
     runs-on:
@@ -235,7 +267,7 @@ jobs:
         id: bundle
         run: |
           BASE="${{ needs.meta.outputs.base_version }}"
-          TAG="v${BASE}-dev.${{ github.run_number }}"
+          TAG="${{ needs.meta.outputs.release_tag }}"
 
           mv "artifacts/mileograph-${BASE}.apk" "artifacts/mileograph-${BASE}-dev.apk"
 
@@ -247,7 +279,7 @@ jobs:
         uses: ncipollo/release-action@v1
         with:
           tag: ${{ steps.bundle.outputs.tag }}
-          name: v${{ needs.meta.outputs.base_version }}-dev build ${{ github.run_number }}
+          name: ${{ steps.bundle.outputs.tag }}
           prerelease: true
           commit: ${{ github.sha }}
           token: ${{ secrets.GITEA_TOKEN }}

.gitignore

@@ -45,3 +45,4 @@ app.*.map.json
 /android/app/release
 
 api_return_examples.txt
+REPO_REVIEW.md

.vscode/settings.json

@@ -1 +1,3 @@
-{}
+{
+  "cmake.ignoreCMakeListsMissing": true
+}

android/app/build.gradle.kts

@@ -45,7 +45,7 @@ android {
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId = "com.example.mileograph_flutter"
+        applicationId = "com.petegregoryy.mileograph_flutter"
         // You can update the following values to match your application needs.
         // For more information, see: https://flutter.dev/to/review-gradle-config.
         minSdk = flutter.minSdkVersion

lib/app.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+import 'package:mileograph_flutter/services/api_service.dart';
+import 'package:mileograph_flutter/services/authservice.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:mileograph_flutter/ui/app_shell.dart';
+import 'package:provider/provider.dart';
+
+class App extends StatelessWidget {
+  const App({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MultiProvider(
+      providers: [
+        Provider<ApiService>(
+          create: (_) => ApiService(baseUrl: 'http://localhost:8000/api/v1'),
+        ),
+        ChangeNotifierProvider<AuthService>(
+          create: (context) => AuthService(api: context.read<ApiService>()),
+        ),
+        ChangeNotifierProvider<DataService>(
+          create: (context) => DataService(api: context.read<ApiService>()),
+        ),
+      ],
+      child: const MyApp(),
+    );
+  }
+}

lib/components/calculator/calculator.dart

@@ -1,9 +1,10 @@
 import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
 import 'package:provider/provider.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
-import 'package:mileograph_flutter/services/apiService.dart';
+import 'package:mileograph_flutter/services/api_service.dart';
-import 'package:mileograph_flutter/services/dataService.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
-import './routeSummaryWidget.dart';
+import './route_summary_widget.dart';
 
 class StationAutocomplete extends StatefulWidget {
   const StationAutocomplete({
@@ -24,9 +25,6 @@ class StationAutocomplete extends StatefulWidget {
 class _StationAutocompleteState extends State<StationAutocomplete> {
   late final TextEditingController _controller;
 
-  // Simulated list of over 10,000 stations
-  final List<String> stations = List.generate(10000, (i) => 'Station $i');
-
   @override
   void initState() {
     super.initState();
@@ -49,15 +47,7 @@ class _StationAutocompleteState extends State<StationAutocomplete> {
         if (textEditingValue.text.isEmpty) {
           return const Iterable<String>.empty();
         }
-        final query = textEditingValue.text.toLowerCase();
+        return _findTopMatches(textEditingValue.text);
-        final matches = widget.allStations
-            .map((s) => s.name)
-            .where((name) => name.toLowerCase().contains(query))
-            .toList();
-
-        matches.sort((a, b) => a.length.compareTo(b.length));
-
-        return matches.take(10);
       },
       onSelected: (String selection) {
         _controller.text = selection;
@@ -72,19 +62,12 @@ class _StationAutocompleteState extends State<StationAutocomplete> {
               focusNode: focusNode,
               textInputAction: TextInputAction.done,
               onSubmitted: (_) {
-                final query = textEditingController.text.toLowerCase();
+                final matches = _findTopMatches(textEditingController.text);
-                final matches = widget.allStations
+                final firstMatch = matches.isEmpty ? null : matches.first;
-                    .map((s) => s.name)
+                if (firstMatch == null) return;
-                    .where((name) => name.toLowerCase().contains(query))
+                _controller.text = firstMatch;
-                    .toList();
+                widget.onChanged(firstMatch);
-
+                focusNode.unfocus(); // optionally close keyboard
-                if (matches.isNotEmpty) {
-                  matches.sort((a, b) => a.length.compareTo(b.length));
-                  final firstMatch = matches.first;
-                  _controller.text = firstMatch;
-                  widget.onChanged(firstMatch);
-                  focusNode.unfocus(); // optionally close keyboard
-                }
               },
               decoration: const InputDecoration(
                 labelText: 'Select station',
@@ -94,6 +77,42 @@ class _StationAutocompleteState extends State<StationAutocomplete> {
           },
     );
   }
+
+  Iterable<String> _findTopMatches(String rawQuery) {
+    final query = rawQuery.trim().toLowerCase();
+    if (query.isEmpty) return const <String>[];
+
+    // Keep a bounded, sorted list (by shortest name, then alpha) without
+    // sorting the entire match set.
+    final best = <String>[];
+    for (final station in widget.allStations) {
+      final name = station.name;
+      if (name.isEmpty) continue;
+      if (!name.toLowerCase().contains(query)) continue;
+
+      _insertCandidate(best, name, max: 10);
+    }
+    return best;
+  }
+
+  void _insertCandidate(List<String> best, String candidate, {required int max}) {
+    final existingIndex = best.indexOf(candidate);
+    if (existingIndex >= 0) return;
+
+    int insertAt = 0;
+    while (insertAt < best.length &&
+        _candidateCompare(best[insertAt], candidate) <= 0) {
+      insertAt++;
+    }
+    best.insert(insertAt, candidate);
+    if (best.length > max) best.removeLast();
+  }
+
+  int _candidateCompare(String a, String b) {
+    final byLength = a.length.compareTo(b.length);
+    if (byLength != 0) return byLength;
+    return a.compareTo(b);
+  }
 }
 
 class RouteCalculator extends StatefulWidget {
@@ -119,8 +138,6 @@ class _RouteCalculatorState extends State<RouteCalculator> {
   RouteResult? get result => _routeResult;
   String? _errorMessage;
 
-  bool _showDetails = false;
-
   bool _fetched = false;
 
   @override
@@ -147,20 +164,28 @@ class _RouteCalculatorState extends State<RouteCalculator> {
       _routeResult = null;
     });
     final api = context.read<ApiService>(); // context is valid here
-    final res = await api.post('/route/distance2', {
+    try {
-      'route': stations.where((s) => s.trim().isNotEmpty).toList(),
+      final res = await api.post('/route/distance2', {
-    });
+        'route': stations.where((s) => s.trim().isNotEmpty).toList(),
+      });
 
-    if (res['error'] == false) {
+      if (res is Map && res['error'] == false) {
-      setState(() {
+        setState(() {
-        _routeResult = RouteResult.fromJson(res);
+          _routeResult = RouteResult.fromJson(Map<String, dynamic>.from(res));
-      });
+        });
-      final distance = (_routeResult?.distance ?? 0);
+        final distance = (_routeResult?.distance ?? 0);
-      widget.onDistanceComputed?.call(distance);
+        widget.onDistanceComputed?.call(distance);
-    } else {
+      } else if (res is Map && res['error_obj'] is List && res['error_obj'].isNotEmpty) {
-      setState(() {
+        setState(() {
-        _errorMessage = RouteError.fromJson(res["error_obj"][0]).msg;
+          _errorMessage = RouteError.fromJson(
-      });
+            Map<String, dynamic>.from(res['error_obj'][0] as Map),
+          ).msg;
+        });
+      } else {
+        setState(() => _errorMessage = 'Failed to calculate route.');
+      }
+    } catch (e) {
+      setState(() => _errorMessage = 'Failed to calculate route: $e');
     }
   }
 
@@ -188,13 +213,6 @@ class _RouteCalculatorState extends State<RouteCalculator> {
   @override
   Widget build(BuildContext context) {
     final data = context.watch<DataService>();
-    if (_showDetails && _routeResult != null) {
-      return RouteDetailsView(
-        route: _routeResult!.calculatedRoute,
-        costs: _routeResult!.costs,
-        onBack: () => setState(() => _showDetails = false),
-      );
-    }
     return Column(
       children: [
         Expanded(
@@ -263,7 +281,11 @@ class _RouteCalculatorState extends State<RouteCalculator> {
         else if (_routeResult != null) ...[
           RouteSummaryWidget(
             distance: _routeResult!.distance,
-            onDetailsPressed: () => setState(() => _showDetails = true),
+            onDetailsPressed: () {
+              final result = _routeResult;
+              if (result == null) return;
+              context.push('/calculator/details', extra: result);
+            },
           ),
           if (widget.onApplyRoute != null)
             Padding(

lib/components/dashboard/latest_loco_changes_panel.dart

@@ -0,0 +1,107 @@
+import 'package:flutter/material.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:provider/provider.dart';
+
+class LatestLocoChangesPanel extends StatefulWidget {
+  const LatestLocoChangesPanel({super.key});
+
+  @override
+  State<LatestLocoChangesPanel> createState() => _LatestLocoChangesPanelState();
+}
+
+class _LatestLocoChangesPanelState extends State<LatestLocoChangesPanel> {
+  late final ScrollController _controller;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = ScrollController();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final data = context.watch<DataService>();
+    final changes = data.latestLocoChanges;
+    final isLoading = data.isLatestLocoChangesLoading;
+    final textTheme = Theme.of(context).textTheme;
+
+    return Card(
+      clipBehavior: Clip.antiAlias,
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Text(
+              'Latest loco changes',
+              style: textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w700),
+            ),
+            const SizedBox(height: 8),
+            if (isLoading && changes.isEmpty)
+              const Padding(
+                padding: EdgeInsets.all(12.0),
+                child: Center(child: CircularProgressIndicator()),
+              )
+            else if (changes.isEmpty)
+              Padding(
+                padding: const EdgeInsets.symmetric(vertical: 8.0),
+                child: Text(
+                  'No recent loco changes yet.',
+                  style: textTheme.bodyMedium,
+                ),
+              )
+            else
+              SizedBox(
+                height: 260,
+                child: Scrollbar(
+                  controller: _controller,
+                  child: ListView.separated(
+                    controller: _controller,
+                    itemCount: changes.length,
+                    separatorBuilder: (_, __) => const Divider(height: 1),
+                    itemBuilder: (context, index) {
+                      final change = changes[index];
+                      return ListTile(
+                        dense: true,
+                        contentPadding: EdgeInsets.zero,
+                        title: Text(
+                          change.locoLabel,
+                          style: textTheme.titleSmall?.copyWith(
+                            fontWeight: FontWeight.w600,
+                          ),
+                        ),
+                        subtitle: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Text('${change.changeLabel}: ${change.valueLabel}'),
+                            Text(
+                              change.approvedDateLabel,
+                              style: textTheme.labelSmall?.copyWith(
+                                color: textTheme.bodySmall?.color?.withValues(alpha: 0.7),
+                              ),
+                            ),
+                          ],
+                        ),
+                        trailing: change.approvedBy.isEmpty
+                            ? null
+                            : Text(
+                                change.approvedBy,
+                                style: textTheme.labelSmall,
+                              ),
+                      );
+                    },
+                  ),
+                ),
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/components/dashboard/leaderboard_panel.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:mileograph_flutter/services/dataService.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
 
 import 'package:provider/provider.dart';
 
@@ -16,23 +16,24 @@ class LeaderboardPanel extends StatelessWidget {
         child: Center(child: CircularProgressIndicator()),
       );
     }
-    return Padding(
+    return Card(
-      padding: const EdgeInsets.all(10.0),
+      clipBehavior: Clip.antiAlias,
-      child: Card(
+      child: Padding(
+        padding: const EdgeInsets.all(16),
         child: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
+          crossAxisAlignment: CrossAxisAlignment.stretch,
           children: [
             Text(
               "Leaderboard",
               style: TextStyle(
-                fontSize: 24,
+                fontSize: 18,
                 fontWeight: FontWeight.bold,
-                decoration: TextDecoration.underline,
               ),
             ),
+            const SizedBox(height: 8),
             if (leaderboard.isEmpty)
               const Padding(
-                padding: EdgeInsets.all(16.0),
+                padding: EdgeInsets.all(8.0),
                 child: Text('No leaderboard data yet'),
               )
             else
@@ -46,7 +47,7 @@ class LeaderboardPanel extends StatelessWidget {
                       margin: const EdgeInsets.symmetric(
                           horizontal: 0, vertical: 8),
                       child: Padding(
-                        padding: const EdgeInsets.all(8),
+                        padding: const EdgeInsets.symmetric(vertical: 6),
                         child: Row(
                           mainAxisAlignment: MainAxisAlignment.spaceBetween,
                           children: [

lib/components/dashboard/top_traction_panel.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:mileograph_flutter/services/dataService.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
 
 import 'package:provider/provider.dart';
 
@@ -17,23 +17,24 @@ class TopTractionPanel extends StatelessWidget {
         child: Center(child: CircularProgressIndicator()),
       );
     }
-    return Padding(
+    return Card(
-      padding: const EdgeInsets.all(10.0),
+      clipBehavior: Clip.antiAlias,
-      child: Card(
+      child: Padding(
+        padding: const EdgeInsets.all(16),
         child: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
+          crossAxisAlignment: CrossAxisAlignment.stretch,
           children: [
             Text(
               "Top Traction",
               style: TextStyle(
-                fontSize: 24,
+                fontSize: 18,
                 fontWeight: FontWeight.bold,
-                decoration: TextDecoration.underline,
               ),
             ),
+            const SizedBox(height: 8),
             if (locos.isEmpty)
               const Padding(
-                padding: EdgeInsets.all(16.0),
+                padding: EdgeInsets.all(8.0),
                 child: Text('No traction data yet'),
               )
             else
@@ -47,7 +48,7 @@ class TopTractionPanel extends StatelessWidget {
                       margin:
                           const EdgeInsets.symmetric(horizontal: 0, vertical: 8),
                       child: Padding(
-                        padding: const EdgeInsets.all(8),
+                        padding: const EdgeInsets.symmetric(vertical: 6),
                         child: Row(
                           mainAxisAlignment: MainAxisAlignment.spaceBetween,
                           children: [

lib/components/legs/leg_card.dart

@@ -0,0 +1,215 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:mileograph_flutter/objects/objects.dart';
+
+class LegCard extends StatelessWidget {
+  const LegCard({
+    super.key,
+    required this.leg,
+    this.showEditButton = true,
+    this.showDate = true,
+  });
+
+  final Leg leg;
+  final bool showEditButton;
+  final bool showDate;
+
+  @override
+  Widget build(BuildContext context) {
+    final routeSegments = _parseRouteSegments(leg.route);
+    final textTheme = Theme.of(context).textTheme;
+    return Card(
+      child: ExpansionTile(
+        tilePadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
+        leading: const Icon(Icons.train),
+        title: Text('${leg.start} → ${leg.end}'),
+        subtitle: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            if (showDate) Text(_formatDateTime(leg.beginTime)),
+            if (leg.headcode.isNotEmpty)
+              Text(
+                'Headcode: ${leg.headcode}',
+                style: textTheme.labelSmall,
+              ),
+            if (leg.network.isNotEmpty)
+              Text(
+                leg.network,
+                style: textTheme.labelSmall,
+              ),
+          ],
+        ),
+        trailing: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Column(
+              mainAxisSize: MainAxisSize.min,
+              mainAxisAlignment: MainAxisAlignment.center,
+              crossAxisAlignment: CrossAxisAlignment.end,
+              children: [
+                Text(
+                  '${leg.mileage.toStringAsFixed(1)} mi',
+                  style: textTheme.labelLarge?.copyWith(
+                    fontWeight: FontWeight.w700,
+                  ),
+                ),
+                if (leg.tripId != 0) ...[
+                  const SizedBox(height: 2),
+                  Text(
+                    'Trip #${leg.tripId}',
+                    style: textTheme.labelSmall,
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+                ],
+              ],
+            ),
+            if (showEditButton) ...[
+              const SizedBox(width: 8),
+              IconButton(
+                tooltip: 'Edit entry',
+                icon: const Icon(Icons.edit),
+                visualDensity: VisualDensity.compact,
+                padding: EdgeInsets.zero,
+                constraints: const BoxConstraints(minWidth: 32, minHeight: 32),
+                onPressed: () => context.push('/legs/edit/${leg.id}'),
+              ),
+            ],
+          ],
+        ),
+        children: [
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 0, 16, 12),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                if (leg.notes.isNotEmpty) ...[
+                  Text('Notes', style: textTheme.titleSmall),
+                  const SizedBox(height: 4),
+                  Text(leg.notes),
+                  const SizedBox(height: 12),
+                ],
+                if (leg.locos.isNotEmpty) ...[
+                  Text('Locos', style: textTheme.titleSmall),
+                  const SizedBox(height: 6),
+                  Wrap(
+                    spacing: 8,
+                    runSpacing: 8,
+                    children: _buildLocoChips(context, leg),
+                  ),
+                  const SizedBox(height: 12),
+                ],
+                if (routeSegments.isNotEmpty) ...[
+                  Text('Route', style: textTheme.titleSmall),
+                  const SizedBox(height: 6),
+                  _buildRouteList(routeSegments),
+                ],
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  String _formatDate(DateTime? date) {
+    if (date == null) return '';
+    return '${date.year.toString().padLeft(4, '0')}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}';
+  }
+
+  String _formatDateTime(DateTime date) {
+    final dateStr = _formatDate(date);
+    final timeStr =
+        '${date.hour.toString().padLeft(2, '0')}:${date.minute.toString().padLeft(2, '0')}';
+    return '$dateStr · $timeStr';
+  }
+
+  List<Widget> _buildLocoChips(BuildContext context, Leg leg) {
+    final theme = Theme.of(context);
+    final textTheme = theme.textTheme;
+    return leg.locos
+        .map(
+          (loco) {
+            final powering = loco.powering == true;
+            final iconColor =
+                powering ? theme.colorScheme.primary : theme.disabledColor;
+            final labelStyle = powering
+                ? null
+                : textTheme.bodyMedium?.copyWith(color: theme.disabledColor);
+            final background = powering
+                ? theme.colorScheme.surfaceContainerHighest
+                : theme.colorScheme.surfaceVariant;
+            return Chip(
+              label: Text(
+                '${loco.locoClass} ${loco.number}',
+                style: labelStyle,
+              ),
+              avatar: Icon(
+                Icons.directions_railway,
+                size: 16,
+                color: iconColor,
+              ),
+              backgroundColor: background,
+            );
+          },
+        )
+        .toList();
+  }
+
+  Widget _buildRouteList(List<String> segments) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: segments
+          .map(
+            (segment) => Padding(
+              padding: const EdgeInsets.symmetric(vertical: 4.0),
+              child: Row(
+                children: [
+                  const Icon(Icons.circle, size: 10),
+                  const SizedBox(width: 8),
+                  Expanded(child: Text(segment)),
+                ],
+              ),
+            ),
+          )
+          .toList(),
+    );
+  }
+
+  List<String> _parseRouteSegments(String route) {
+    final trimmed = route.trim();
+    if (trimmed.isEmpty) return [];
+    try {
+      final decoded = jsonDecode(trimmed);
+      if (decoded is List) {
+        return decoded.map((e) => e.toString()).toList();
+      }
+    } catch (_) {}
+    if (trimmed.startsWith('[') && trimmed.endsWith(']')) {
+      try {
+        final replaced = trimmed.replaceAll("'", '"');
+        final decoded = jsonDecode(replaced);
+        if (decoded is List) {
+          return decoded.map((e) => e.toString()).toList();
+        }
+      } catch (_) {}
+    }
+    if (trimmed.contains('->')) {
+      return trimmed
+          .split('->')
+          .map((e) => e.trim())
+          .where((e) => e.isNotEmpty)
+          .toList();
+    }
+    if (trimmed.contains(',')) {
+      return trimmed
+          .split(',')
+          .map((e) => e.trim())
+          .where((e) => e.isNotEmpty)
+          .toList();
+    }
+    return [trimmed];
+  }
+}

lib/components/login/login.dart

@@ -151,6 +151,13 @@ class _LoginPanelContentState extends State<LoginPanelContent> {
 
   bool _loggingIn = false;
 
+  @override
+  void dispose() {
+    _usernameController.dispose();
+    _passwordController.dispose();
+    super.dispose();
+  }
+
   Future<void> login() async {
     final username = _usernameController.text;
     final password = _passwordController.text;

lib/components/pages/calculator_details.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:mileograph_flutter/components/calculator/route_summary_widget.dart';
+import 'package:mileograph_flutter/objects/objects.dart';
+
+class CalculatorDetailsPage extends StatelessWidget {
+  const CalculatorDetailsPage({
+    super.key,
+    required this.result,
+  });
+
+  final Object? result;
+
+  @override
+  Widget build(BuildContext context) {
+    final parsed = result is RouteResult ? result as RouteResult : null;
+    if (parsed == null) {
+      return Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            TextButton.icon(
+              onPressed: () => context.pop(),
+              icon: const Icon(Icons.arrow_back),
+              label: const Text('Back'),
+            ),
+            const SizedBox(height: 12),
+            const Text(
+              'No route details available.',
+            ),
+          ],
+        ),
+      );
+    }
+
+    return Padding(
+      padding: const EdgeInsets.all(16.0),
+      child: RouteDetailsView(
+        route: parsed.calculatedRoute,
+        costs: parsed.costs,
+        onBack: () => context.pop(),
+      ),
+    );
+  }
+}
+

lib/components/pages/dashboard.dart

@@ -1,10 +1,11 @@
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
-import 'package:mileograph_flutter/components/dashboard/leaderboardPanel.dart';
+import 'package:mileograph_flutter/components/dashboard/latest_loco_changes_panel.dart';
-import 'package:mileograph_flutter/components/dashboard/topTractionPanel.dart';
+import 'package:mileograph_flutter/components/dashboard/leaderboard_panel.dart';
+import 'package:mileograph_flutter/components/dashboard/top_traction_panel.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
 import 'package:mileograph_flutter/services/authservice.dart';
-import 'package:mileograph_flutter/services/dataService.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
 import 'package:provider/provider.dart';
 
 class Dashboard extends StatefulWidget {
@@ -32,6 +33,7 @@ class _DashboardState extends State<Dashboard> {
           data.fetchOnThisDay(),
           data.fetchTripDetails(),
           data.fetchHadTraction(),
+          data.fetchLatestLocoChanges(),
         ]);
       },
       child: LayoutBuilder(
@@ -41,7 +43,7 @@ class _DashboardState extends State<Dashboard> {
             context,
             totalMileage: stats?.totalMileage ?? 0,
             currentYearMileage: data.getMileageForCurrentYear(),
-            trips: data.trips.length,
+            legCount: stats?.legCount ?? data.trips.length,
           );
           return Stack(
             children: [
@@ -78,7 +80,7 @@ class _DashboardState extends State<Dashboard> {
                   child: Container(
                     color: Theme.of(
                       context,
-                    ).colorScheme.surface.withOpacity(0.7),
+                    ).colorScheme.surface.withValues(alpha: 0.7),
                     child: const Center(
                       child: Column(
                         mainAxisSize: MainAxisSize.min,
@@ -105,7 +107,7 @@ class _DashboardState extends State<Dashboard> {
     bool loading,
   ) {
     final greetingName =
-        stats?.user?.full_name ?? auth.fullName ?? auth.username ?? 'there';
+        stats?.user?.fullName ?? auth.fullName ?? auth.username ?? 'there';
     return Row(
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       crossAxisAlignment: CrossAxisAlignment.start,
@@ -138,7 +140,7 @@ class _DashboardState extends State<Dashboard> {
     BuildContext context, {
     required double totalMileage,
     required double currentYearMileage,
-    required int trips,
+    required int legCount,
   }) {
     final textTheme = Theme.of(context).textTheme;
     Widget metricCard(String label, String value) {
@@ -154,7 +156,7 @@ class _DashboardState extends State<Dashboard> {
                 label.toUpperCase(),
                 style: textTheme.labelSmall?.copyWith(
                   letterSpacing: 0.7,
-                  color: textTheme.bodySmall?.color?.withOpacity(0.7),
+                  color: textTheme.bodySmall?.color?.withValues(alpha: 0.7),
                 ),
               ),
               const SizedBox(height: 4),
@@ -173,7 +175,7 @@ class _DashboardState extends State<Dashboard> {
     return [
       metricCard('Total mileage', '${totalMileage.toStringAsFixed(1)} mi'),
       metricCard('This year', '${currentYearMileage.toStringAsFixed(1)} mi'),
-      metricCard('Trips logged', trips.toString()),
+      metricCard('Entries logged', legCount.toString()),
     ];
   }
 
@@ -211,8 +213,6 @@ class _DashboardState extends State<Dashboard> {
           ),
         ),
         const SizedBox(height: 12),
-        _buildQuickCalcCard(context),
-        const SizedBox(height: 12),
         _buildTripsCard(context, data),
       ],
     );
@@ -220,10 +220,13 @@ class _DashboardState extends State<Dashboard> {
 
   Widget _buildSidebar(BuildContext context, DataService data) {
     return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
       children: [
-        TopTractionPanel(),
+        const TopTractionPanel(),
         const SizedBox(height: 12),
-        LeaderboardPanel(),
+        const LeaderboardPanel(),
+        const SizedBox(height: 12),
+        const LatestLocoChangesPanel(),
       ],
     );
   }
@@ -313,22 +316,6 @@ class _DashboardState extends State<Dashboard> {
     );
   }
 
-  Widget _buildQuickCalcCard(BuildContext context) {
-    return _buildCard(
-      context,
-      title: 'Quick mileage calculator',
-      action: TextButton.icon(
-        onPressed: () => context.push('/calculator'),
-        icon: const Icon(Icons.open_in_new),
-        label: const Text('Open calculator'),
-      ),
-      child: Text(
-        'Jump into the route calculator to quickly total a journey before saving it.',
-        style: Theme.of(context).textTheme.bodyMedium,
-      ),
-    );
-  }
-
   Widget _buildTripsCard(BuildContext context, DataService data) {
     final tripsUnsorted = data.trips;
     List trips = [];
@@ -353,7 +340,6 @@ class _DashboardState extends State<Dashboard> {
                   contentPadding: EdgeInsets.zero,
                   title: Text(trip.tripName),
                   subtitle: Text('${trip.tripMileage.toStringAsFixed(1)} mi'),
-                  trailing: const Icon(Icons.chevron_right),
                 );
               }).toList(),
             ),

lib/components/pages/legs.dart

@@ -1,9 +1,7 @@
-import 'dart:convert';
-
 import 'package:flutter/material.dart';
-import 'package:go_router/go_router.dart';
+import 'package:mileograph_flutter/components/legs/leg_card.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
-import 'package:mileograph_flutter/services/dataService.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
 import 'package:provider/provider.dart';
 
 class LegsPage extends StatefulWidget {
@@ -214,7 +212,7 @@ class _LegsPageState extends State<LegsPage> {
           else
             Column(
               children: [
-                ...legs.map((leg) => _buildLegCard(context, leg)),
+                ..._buildLegsWithDividers(context, legs),
                 const SizedBox(height: 8),
                 if (data.legsHasMore || data.isLegsLoading)
                   Align(
@@ -241,164 +239,60 @@ class _LegsPageState extends State<LegsPage> {
     );
   }
 
+  List<Widget> _buildLegsWithDividers(BuildContext context, List<Leg> legs) {
+    final widgets = <Widget>[];
+    String? currentDate;
+    double dayMileage = 0;
+    final dayLegs = <Leg>[];
+
+    void flushDay() {
+      if (currentDate == null) return;
+      widgets.add(
+        Padding(
+          padding: const EdgeInsets.symmetric(vertical: 8.0),
+          child: Row(
+            children: [
+              Expanded(
+                child: Text(
+                  currentDate!,
+                  style: Theme.of(context).textTheme.labelMedium?.copyWith(
+                        fontWeight: FontWeight.w700,
+                      ),
+                ),
+              ),
+              Text(
+                '${dayMileage.toStringAsFixed(1)} mi',
+                style: Theme.of(context).textTheme.labelMedium,
+              ),
+            ],
+          ),
+        ),
+      );
+      widgets.add(const Divider());
+      widgets.addAll(
+        dayLegs.map((leg) => LegCard(leg: leg, showDate: false)),
+      );
+      dayLegs.clear();
+    }
+
+    for (final leg in legs) {
+      final dateStr = _formatDate(leg.beginTime) ?? '';
+      if (currentDate != null && dateStr != currentDate) {
+        flushDay();
+        dayMileage = 0;
+      }
+      currentDate = dateStr;
+      dayLegs.add(leg);
+      dayMileage += leg.mileage;
+    }
+
+    flushDay();
+    return widgets;
+  }
+
   String? _formatDate(DateTime? date) {
     if (date == null) return null;
     return '${date.year.toString().padLeft(4, '0')}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}';
   }
 
-  String _formatDateTime(DateTime date) {
-    final dateStr = _formatDate(date) ?? '';
-    final timeStr =
-        '${date.hour.toString().padLeft(2, '0')}:${date.minute.toString().padLeft(2, '0')}';
-    return '$dateStr · $timeStr';
-  }
-
-  Widget _buildLegCard(BuildContext context, Leg leg) {
-    final routeSegments = _parseRouteSegments(leg.route);
-    final textTheme = Theme.of(context).textTheme;
-    return Card(
-      child: ExpansionTile(
-        tilePadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
-        leading: const Icon(Icons.train),
-        title: Text('${leg.start} → ${leg.end}'),
-        subtitle: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            Text(_formatDateTime(leg.beginTime)),
-            if (leg.headcode.isNotEmpty)
-              Text(
-                'Headcode: ${leg.headcode}',
-                style: textTheme.labelSmall,
-              ),
-            if (leg.network.isNotEmpty)
-              Text(
-                leg.network,
-                style: textTheme.labelSmall,
-              ),
-          ],
-        ),
-        trailing: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: [
-            IconButton(
-              tooltip: 'Edit entry',
-              icon: const Icon(Icons.edit),
-              onPressed: () => context.push('/legs/edit/${leg.id}'),
-            ),
-            Text(
-              '${leg.mileage.toStringAsFixed(1)} mi',
-              style:
-                  textTheme.labelLarge?.copyWith(fontWeight: FontWeight.w700),
-            ),
-            if (leg.tripId != 0)
-              Text(
-                'Trip #${leg.tripId}',
-                style: textTheme.labelSmall,
-              ),
-          ],
-        ),
-        children: [
-          Padding(
-            padding: const EdgeInsets.fromLTRB(16, 0, 16, 12),
-            child: Column(
-              crossAxisAlignment: CrossAxisAlignment.start,
-              children: [
-                if (leg.notes.isNotEmpty) ...[
-                  Text('Notes', style: textTheme.titleSmall),
-                  const SizedBox(height: 4),
-                  Text(leg.notes),
-                  const SizedBox(height: 12),
-                ],
-                if (leg.locos.isNotEmpty) ...[
-                  Text('Locos', style: textTheme.titleSmall),
-                  const SizedBox(height: 6),
-                  Wrap(
-                    spacing: 8,
-                    runSpacing: 8,
-                    children: _buildLocoChips(context, leg),
-                  ),
-                  const SizedBox(height: 12),
-                ],
-                if (routeSegments.isNotEmpty) ...[
-                  Text('Route', style: textTheme.titleSmall),
-                  const SizedBox(height: 6),
-                  _buildRouteList(routeSegments),
-                ],
-              ],
-            ),
-          ),
-        ],
-      ),
-    );
-  }
-
-  List<Widget> _buildLocoChips(BuildContext context, Leg leg) {
-    final theme = Theme.of(context);
-    return leg.locos
-        .map(
-          (loco) => Chip(
-            label: Text('${loco.locoClass} ${loco.number}'),
-            avatar: const Icon(Icons.directions_railway, size: 16),
-            backgroundColor: theme.colorScheme.surfaceContainerHighest,
-          ),
-        )
-        .toList();
-  }
-
-  Widget _buildRouteList(List<String> segments) {
-    return Column(
-      crossAxisAlignment: CrossAxisAlignment.start,
-      children: segments
-          .map(
-            (segment) => Padding(
-              padding: const EdgeInsets.symmetric(vertical: 4.0),
-              child: Row(
-                children: [
-                  const Icon(Icons.circle, size: 10),
-                  const SizedBox(width: 8),
-                  Expanded(child: Text(segment)),
-                ],
-              ),
-            ),
-          )
-          .toList(),
-    );
-  }
-
-  List<String> _parseRouteSegments(String route) {
-    final trimmed = route.trim();
-    if (trimmed.isEmpty) return [];
-    try {
-      final decoded = jsonDecode(trimmed);
-      if (decoded is List) {
-        return decoded.map((e) => e.toString()).toList();
-      }
-    } catch (_) {
-      // ignore and try alternative parsing
-    }
-    if (trimmed.startsWith('[') && trimmed.endsWith(']')) {
-      try {
-        final replaced = trimmed.replaceAll("'", '"');
-        final decoded = jsonDecode(replaced);
-        if (decoded is List) {
-          return decoded.map((e) => e.toString()).toList();
-        }
-      } catch (_) {}
-    }
-    if (trimmed.contains('->')) {
-      return trimmed
-          .split('->')
-          .map((e) => e.trim())
-          .where((e) => e.isNotEmpty)
-          .toList();
-    }
-    if (trimmed.contains(',')) {
-      return trimmed
-          .split(',')
-          .map((e) => e.trim())
-          .where((e) => e.isNotEmpty)
-          .toList();
-    }
-    return [trimmed];
-  }
 }

lib/components/pages/loco_legs.dart

@@ -0,0 +1,119 @@
+import 'package:flutter/material.dart';
+import 'package:mileograph_flutter/components/legs/leg_card.dart';
+import 'package:mileograph_flutter/objects/objects.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:provider/provider.dart';
+
+class LocoLegsPage extends StatefulWidget {
+  const LocoLegsPage({
+    super.key,
+    required this.locoId,
+    required this.locoLabel,
+  });
+
+  final int locoId;
+  final String locoLabel;
+
+  @override
+  State<LocoLegsPage> createState() => _LocoLegsPageState();
+}
+
+class _LocoLegsPageState extends State<LocoLegsPage> {
+  bool _includeNonPowering = false;
+  late Future<List<Leg>> _future;
+
+  @override
+  void initState() {
+    super.initState();
+    _future = _fetch();
+  }
+
+  Future<List<Leg>> _fetch() {
+    return context.read<DataService>().fetchLegsForLoco(
+          widget.locoId,
+          includeNonPowering: _includeNonPowering,
+        );
+  }
+
+  Future<void> _refresh() async {
+    final items = await _fetch();
+    if (!mounted) return;
+    setState(() {
+      _future = Future.value(items);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final titleLabel =
+        widget.locoLabel.trim().isEmpty ? 'Loco ${widget.locoId}' : widget.locoLabel;
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Legs · $titleLabel'),
+        actions: [
+          IconButton(
+            tooltip: 'Refresh',
+            onPressed: _refresh,
+            icon: const Icon(Icons.refresh),
+          ),
+        ],
+      ),
+      body: SafeArea(
+        child: Column(
+          children: [
+            Padding(
+              padding: const EdgeInsets.fromLTRB(16, 12, 16, 8),
+              child: Card(
+                child: SwitchListTile(
+                  title: const Text('Include non-powering (dead-in-tow)'),
+                  subtitle: const Text('Off by default'),
+                  value: _includeNonPowering,
+                  onChanged: (val) {
+                    setState(() {
+                      _includeNonPowering = val;
+                      _future = _fetch();
+                    });
+                  },
+                ),
+              ),
+            ),
+            Expanded(
+              child: FutureBuilder<List<Leg>>(
+                future: _future,
+                builder: (context, snapshot) {
+                  final items = snapshot.data ?? const <Leg>[];
+                  final isLoading =
+                      snapshot.connectionState == ConnectionState.waiting;
+
+                  if (isLoading && items.isEmpty) {
+                    return const Center(child: CircularProgressIndicator());
+                  }
+
+                  if (!isLoading && items.isEmpty) {
+                    return const Center(
+                      child: Padding(
+                        padding: EdgeInsets.all(16.0),
+                        child: Text('No legs found for this loco.'),
+                      ),
+                    );
+                  }
+
+                  return RefreshIndicator(
+                    onRefresh: _refresh,
+                    child: ListView.builder(
+                      padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
+                      physics: const AlwaysScrollableScrollPhysics(),
+                      itemCount: items.length,
+                      itemBuilder: (context, index) => LegCard(leg: items[index]),
+                    ),
+                  );
+                },
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+

lib/components/pages/loco_timeline/event_editor.dart

@@ -0,0 +1,331 @@
+part of 'package:mileograph_flutter/components/pages/loco_timeline.dart';
+
+class _EventEditor extends StatelessWidget {
+  const _EventEditor({
+    required this.eventFields,
+    required this.drafts,
+    required this.onAddEvent,
+    required this.onChange,
+    required this.onSave,
+    required this.onRemoveDraft,
+    required this.isSaving,
+    required this.canSave,
+  });
+
+  final List<EventField> eventFields;
+  final List<_EventDraft> drafts;
+  final VoidCallback onAddEvent;
+  final VoidCallback onChange;
+  final Future<void> Function() onSave;
+  final void Function(int index) onRemoveDraft;
+  final bool isSaving;
+  final bool canSave;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Row(
+          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+          children: [
+            Text(
+              'Add events',
+              style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                    fontWeight: FontWeight.w700,
+                  ),
+            ),
+            Row(
+              children: [
+                OutlinedButton.icon(
+                  onPressed: onAddEvent,
+                  icon: const Icon(Icons.add),
+                  label: const Text('New event'),
+                ),
+                const SizedBox(width: 8),
+                FilledButton.icon(
+                  onPressed: (!canSave || isSaving) ? null : onSave,
+                  icon: isSaving
+                      ? const SizedBox(
+                          height: 14,
+                          width: 14,
+                          child: CircularProgressIndicator(strokeWidth: 2),
+                        )
+                      : const Icon(Icons.save),
+                  label: Text(isSaving ? 'Saving...' : 'Save all'),
+                ),
+              ],
+            ),
+          ],
+        ),
+        const SizedBox(height: 12),
+        if (drafts.isEmpty)
+          const Text('No events yet. Add one to propose new values.')
+        else
+          ...drafts.asMap().entries.map(
+            (entry) {
+              final idx = entry.key;
+              final draft = entry.value;
+              return Padding(
+                padding: const EdgeInsets.only(bottom: 12.0),
+                child: Card(
+                  child: Padding(
+                    padding: const EdgeInsets.all(12.0),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Row(
+                          children: [
+                            Text(
+                              'Event ${idx + 1}',
+                              style: Theme.of(context).textTheme.titleMedium,
+                            ),
+                            const Spacer(),
+                            IconButton(
+                              tooltip: 'Remove',
+                              onPressed: () => onRemoveDraft(idx),
+                              icon: const Icon(Icons.delete_outline),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 8),
+                        Row(
+                          children: [
+                            Expanded(
+                              child: TextField(
+                                controller: draft.dateController,
+                                onChanged: (_) => onChange(),
+                                decoration: const InputDecoration(
+                                  labelText: 'Date (YYYY-MM-DD, MM/DD can be XX)',
+                                  border: OutlineInputBorder(),
+                                ),
+                              ),
+                            ),
+                            IconButton(
+                              tooltip: 'Pick date',
+                              onPressed: () async {
+                                final now = DateTime.now();
+                                final picked = await showDatePicker(
+                                  context: context,
+                                  initialDate: draft.date ?? now,
+                                  firstDate: DateTime(1900),
+                                  lastDate: DateTime(now.year + 10),
+                                );
+                                if (picked != null) {
+                                  draft.date = picked;
+                                  draft.dateController.text =
+                                      DateFormat('yyyy-MM-dd').format(picked);
+                                  onChange();
+                                }
+                              },
+                              icon: const Icon(Icons.calendar_month),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 8),
+                        _FieldList(
+                          draft: draft,
+                          eventFields: eventFields,
+                          onChange: onChange,
+                        ),
+                        const SizedBox(height: 12),
+                        TextField(
+                          controller: draft.detailsController,
+                          onChanged: (val) {
+                            draft.details = val;
+                            onChange();
+                          },
+                          decoration: const InputDecoration(
+                            labelText: 'Commit message / details',
+                            border: OutlineInputBorder(),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              );
+            },
+          ),
+      ],
+    );
+  }
+}
+
+class _FieldList extends StatelessWidget {
+  const _FieldList({
+    required this.draft,
+    required this.eventFields,
+    required this.onChange,
+  });
+
+  final _EventDraft draft;
+  final List<EventField> eventFields;
+  final VoidCallback onChange;
+
+  @override
+  Widget build(BuildContext context) {
+    final usedNames = draft.fields.map((f) => f.field.name).toSet();
+    final availableFields =
+        eventFields.where((f) => !usedNames.contains(f.name)).toList();
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Row(
+          children: [
+            Text(
+              'Fields',
+              style: Theme.of(context).textTheme.titleSmall,
+            ),
+            const Spacer(),
+            DropdownButton<EventField>(
+              hint: const Text('Add field'),
+              value: null,
+              onChanged: (field) {
+                if (field == null) return;
+                draft.fields.add(_FieldEntry(field: field));
+                onChange();
+              },
+              items: availableFields
+                  .map(
+                    (f) => DropdownMenuItem(
+                      value: f,
+                      child: Text(f.display),
+                    ),
+                  )
+                  .toList(),
+            ),
+          ],
+        ),
+        const SizedBox(height: 8),
+        if (draft.fields.isEmpty)
+          const Text('No fields added yet.')
+        else
+          ...draft.fields.asMap().entries.map(
+            (entry) {
+              final idx = entry.key;
+              final field = entry.value;
+              return Padding(
+                padding: const EdgeInsets.symmetric(vertical: 6.0),
+                child: Row(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          Text(
+                            field.field.display,
+                            style: Theme.of(context)
+                                .textTheme
+                                .labelLarge
+                                ?.copyWith(fontWeight: FontWeight.w700),
+                          ),
+                          const SizedBox(height: 4),
+                          _FieldInput(
+                            field: field.field,
+                            value: field.value,
+                            onChanged: (val) {
+                              field.value = val;
+                              onChange();
+                            },
+                          ),
+                        ],
+                      ),
+                    ),
+                    IconButton(
+                      onPressed: () {
+                        draft.fields.removeAt(idx);
+                        onChange();
+                      },
+                      icon: const Icon(Icons.close),
+                    ),
+                  ],
+                ),
+              );
+            },
+          ),
+      ],
+    );
+  }
+}
+
+class _FieldInput extends StatelessWidget {
+  const _FieldInput({
+    required this.field,
+    required this.value,
+    required this.onChanged,
+  });
+
+  final EventField field;
+  final dynamic value;
+  final ValueChanged<dynamic> onChanged;
+
+  @override
+  Widget build(BuildContext context) {
+    if (field.enumValues != null && field.enumValues!.isNotEmpty) {
+      final options = field.enumValues!;
+      return DropdownButtonFormField<String>(
+        value: value is String && options.contains(value) ? value : null,
+        decoration: const InputDecoration(border: OutlineInputBorder()),
+        items: options
+            .map((v) => DropdownMenuItem<String>(value: v, child: Text(v)))
+            .toList(),
+        onChanged: (val) => onChanged(val),
+        hint: const Text('Select value'),
+      );
+    }
+
+    final type = field.type?.toLowerCase();
+    if (type == 'bool' || type == 'boolean') {
+      final bool? current =
+          value is bool ? value : (value is String ? value == 'true' : null);
+      return DropdownButtonFormField<bool>(
+        value: current,
+        decoration: const InputDecoration(border: OutlineInputBorder()),
+        items: const [
+          DropdownMenuItem(value: true, child: Text('Yes')),
+          DropdownMenuItem(value: false, child: Text('No')),
+        ],
+        onChanged: (val) => onChanged(val),
+        hint: const Text('Select'),
+      );
+    }
+
+    final isNumber = type == 'int' || type == 'integer';
+    return TextFormField(
+      initialValue: value?.toString(),
+      onChanged: (val) {
+        if (isNumber) {
+          final parsed = int.tryParse(val);
+          onChanged(parsed);
+        } else {
+          onChanged(val);
+        }
+      },
+      decoration: const InputDecoration(
+        border: OutlineInputBorder(),
+        hintText: 'Enter value',
+      ),
+      keyboardType: isNumber ? TextInputType.number : TextInputType.text,
+    );
+  }
+}
+
+class _EventDraft {
+  DateTime? date;
+  String details = '';
+  final TextEditingController detailsController = TextEditingController();
+  final TextEditingController dateController = TextEditingController();
+  final List<_FieldEntry> fields = [];
+
+  _EventDraft();
+}
+
+class _FieldEntry {
+  final EventField field;
+  dynamic value;
+
+  _FieldEntry({required this.field});
+}

lib/components/pages/loco_timeline/timeline_grid.dart

@@ -0,0 +1,788 @@
+part of 'package:mileograph_flutter/components/pages/loco_timeline.dart';
+
+final DateFormat _dateFormat = DateFormat('yyyy-MM-dd');
+
+class _TimelineGrid extends StatefulWidget {
+  const _TimelineGrid({
+    required this.entries,
+    this.onEditEntry,
+    this.onDeleteEntry,
+  });
+
+  final List<LocoAttrVersion> entries;
+  final void Function(LocoAttrVersion entry)? onEditEntry;
+  final void Function(LocoAttrVersion entry)? onDeleteEntry;
+
+  @override
+  State<_TimelineGrid> createState() => _TimelineGridState();
+}
+
+class _TimelineGridState extends State<_TimelineGrid> {
+  final ScrollController _horizontalController = ScrollController();
+  final ScrollController _rightVerticalController = ScrollController();
+  final ScrollController _leftVerticalController = ScrollController();
+  bool _isSyncingScroll = false;
+  double _scrollOffset = 0;
+
+  @override
+  void initState() {
+    super.initState();
+    _rightVerticalController.addListener(_syncVerticalScroll);
+    _horizontalController.addListener(_onHorizontalScroll);
+  }
+
+  @override
+  void dispose() {
+    _rightVerticalController.removeListener(_syncVerticalScroll);
+    _horizontalController.removeListener(_onHorizontalScroll);
+    _horizontalController.dispose();
+    _rightVerticalController.dispose();
+    _leftVerticalController.dispose();
+    super.dispose();
+  }
+
+  void _syncVerticalScroll() {
+    if (_isSyncingScroll) return;
+    if (!_leftVerticalController.hasClients ||
+        !_rightVerticalController.hasClients) {
+      return;
+    }
+    _isSyncingScroll = true;
+    _leftVerticalController.jumpTo(
+      _rightVerticalController.offset.clamp(
+        0.0,
+        _leftVerticalController.position.maxScrollExtent,
+      ),
+    );
+    _isSyncingScroll = false;
+  }
+
+  void _onHorizontalScroll() {
+    if (!mounted) return;
+    setState(() {
+      _scrollOffset = _horizontalController.offset;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final filteredEntries = widget.entries.where((e) {
+      final code = e.attrCode.toLowerCase();
+      return !{
+        'operational',
+        'gettable',
+        'build_prec',
+        'build_year',
+        'build_month',
+        'build_day',
+      }.contains(code);
+    }).toList();
+    final model = _TimelineModel.fromEntries(filteredEntries);
+    final axisSegments = model.axisSegments;
+    const labelWidth = 110.0;
+    const rowHeight = 52.0;
+    const double axisHeight = 48;
+    final rows = model.attrRows.entries.toList();
+    final totalRowsHeight = rows.length * rowHeight;
+    final axisWidth = math.max(model.axisTotalWidth, 120.0);
+    final double viewHeight = totalRowsHeight + axisHeight + 8;
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        SizedBox(
+          height: viewHeight,
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              SizedBox(
+                width: labelWidth,
+                child: Column(
+                  children: [
+                    SizedBox(
+                      height: axisHeight,
+                      child: Align(
+                        alignment: Alignment.centerLeft,
+                        child: Text(
+                          'Attribute',
+                          style: Theme.of(context).textTheme.labelLarge?.copyWith(
+                                fontWeight: FontWeight.w700,
+                              ),
+                        ),
+                      ),
+                    ),
+                    Expanded(
+                      child: Scrollbar(
+                        controller: _leftVerticalController,
+                        thumbVisibility: true,
+                        child: ListView.builder(
+                          controller: _leftVerticalController,
+                          physics: const NeverScrollableScrollPhysics(),
+                          itemExtent: rowHeight,
+                          itemCount: rows.length,
+                          itemBuilder: (_, index) {
+                            final label = _formatAttrLabel(rows[index].key);
+                            return Container(
+                              alignment: Alignment.centerLeft,
+                              padding: const EdgeInsets.symmetric(
+                                horizontal: 10,
+                              ),
+                              decoration: BoxDecoration(
+                                color: Theme.of(context)
+                                    .colorScheme
+                                    .surfaceContainerHighest,
+                                border: Border(
+                                  bottom: BorderSide(
+                                    color:
+                                        Theme.of(context).colorScheme.outlineVariant,
+                                  ),
+                                ),
+                              ),
+                              child: Text(
+                                label,
+                                style: Theme.of(context)
+                                    .textTheme
+                                    .labelLarge
+                                    ?.copyWith(fontWeight: FontWeight.w700),
+                              ),
+                            );
+                          },
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              const SizedBox(width: 8),
+              Expanded(
+                child: Scrollbar(
+                  controller: _horizontalController,
+                  thumbVisibility: true,
+                  child: SingleChildScrollView(
+                    controller: _horizontalController,
+                    scrollDirection: Axis.horizontal,
+                    child: SizedBox(
+                      width: axisWidth,
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          _AxisRow(
+                            segments: axisSegments,
+                            totalWidth: axisWidth,
+                            endLabel: model.endLabel,
+                          ),
+                          const SizedBox(height: 8),
+                          Expanded(
+                            child: ListView.builder(
+                              controller: _rightVerticalController,
+                              itemExtent: rowHeight,
+                              itemCount: rows.length,
+                              itemBuilder: (_, index) {
+                                final blocks = rows[index].value;
+                                return Padding(
+                                  padding:
+                                      const EdgeInsets.symmetric(vertical: 2.0),
+                                  child: _AttrRow(
+                                    rowHeight: rowHeight,
+                                    blocks: blocks,
+                                    model: model,
+                                    scrollOffset: _scrollOffset,
+                                    viewportWidth: axisWidth,
+                                    onEditEntry: widget.onEditEntry,
+                                    onDeleteEntry: widget.onDeleteEntry,
+                                  ),
+                                );
+                              },
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+class _AxisRow extends StatelessWidget {
+  const _AxisRow({
+    required this.segments,
+    required this.endLabel,
+    required this.totalWidth,
+  });
+
+  final List<_AxisSegment> segments;
+  final String endLabel;
+  final double totalWidth;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    const double axisHeight = 48;
+    return SizedBox(
+      width: totalWidth,
+      height: axisHeight,
+      child: Stack(
+        children: [
+          for (int i = 0; i < segments.length; i++) ...[
+            Positioned(
+              left: segments[i].offset,
+              width: segments[i].width,
+              top: 0,
+              bottom: 0,
+              child: Align(
+                alignment: Alignment.centerLeft,
+                child: Text(
+                  segments[i].label,
+                  overflow: TextOverflow.ellipsis,
+                  maxLines: 1,
+                  style: theme.textTheme.labelSmall,
+                ),
+              ),
+            ),
+          ],
+          Positioned(
+            right: 0,
+            top: 0,
+            bottom: 0,
+            child: Align(
+              alignment: Alignment.centerRight,
+              child: Text(
+                endLabel,
+                overflow: TextOverflow.ellipsis,
+                maxLines: 1,
+                style: theme.textTheme.labelSmall,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _AttrRow extends StatelessWidget {
+  const _AttrRow({
+    required this.rowHeight,
+    required this.blocks,
+    required this.model,
+    required this.scrollOffset,
+    required this.viewportWidth,
+    this.onEditEntry,
+    this.onDeleteEntry,
+  });
+
+  final double rowHeight;
+  final List<_ValueBlock> blocks;
+  final _TimelineModel model;
+  final double scrollOffset;
+  final double viewportWidth;
+  final void Function(LocoAttrVersion entry)? onEditEntry;
+  final void Function(LocoAttrVersion entry)? onDeleteEntry;
+
+  @override
+  Widget build(BuildContext context) {
+    final width = math.max(model.axisTotalWidth, 120.0);
+    final activeBlock = _activeBlock(blocks, scrollOffset);
+    final double stickyWidth = activeBlock == null
+        ? 0
+        : (activeBlock.right - scrollOffset).clamp(20.0, viewportWidth);
+
+    return SizedBox(
+      width: width,
+      height: rowHeight,
+      child: Stack(
+        clipBehavior: Clip.hardEdge,
+        children: [
+          for (final block in blocks)
+            Positioned(
+              left: block.left,
+              width: block.width,
+              top: 0,
+              bottom: 0,
+              child: _ValueBlockMenu(
+                block: block,
+                onEditEntry: onEditEntry,
+                onDeleteEntry: onDeleteEntry,
+              ),
+            ),
+          if (activeBlock != null)
+            Positioned(
+              left: scrollOffset,
+              width: stickyWidth,
+              top: 0,
+              bottom: 0,
+              child: IgnorePointer(
+                child: ClipRect(
+                  child: _ValueBlockView(
+                    block: activeBlock.copyWith(
+                      left: scrollOffset,
+                      width: stickyWidth,
+                    ),
+                    clipLeftEdge: scrollOffset > activeBlock.left + 0.1,
+                  ),
+                ),
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+
+  _ValueBlock? _activeBlock(List<_ValueBlock> blocks, double offset) {
+    for (final block in blocks) {
+      if (offset >= block.left && offset < block.right) return block;
+    }
+    return null;
+  }
+}
+
+class _ValueBlockView extends StatelessWidget {
+  const _ValueBlockView({
+    required this.block,
+    this.clipLeftEdge = false,
+  });
+
+  final _ValueBlock block;
+  final bool clipLeftEdge;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final color = block.cell.color.withValues(alpha: 0.9);
+    final textColor = ThemeData.estimateBrightnessForColor(color) ==
+            Brightness.dark
+        ? Colors.white
+        : Colors.black87;
+
+    final radius = BorderRadius.only(
+      topLeft: Radius.circular(clipLeftEdge ? 0 : 12),
+      bottomLeft: Radius.circular(clipLeftEdge ? 0 : 12),
+      topRight: const Radius.circular(12),
+      bottomRight: const Radius.circular(12),
+    );
+
+    return ClipRRect(
+      borderRadius: radius,
+      child: Container(
+        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
+        decoration: BoxDecoration(
+          color: block.cell.value.isEmpty
+              ? theme.colorScheme.surfaceContainerHighest
+              : color,
+          borderRadius: BorderRadius.zero,
+          border: Border.all(color: theme.colorScheme.outlineVariant),
+        ),
+        child: block.cell.value.isEmpty
+            ? const SizedBox.shrink()
+            : FittedBox(
+                alignment: Alignment.topLeft,
+                fit: BoxFit.scaleDown,
+                child: ConstrainedBox(
+                  constraints: const BoxConstraints(minWidth: 1, minHeight: 1),
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: [
+                      Text(
+                        block.cell.value,
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: theme.textTheme.bodyMedium?.copyWith(
+                              fontWeight: FontWeight.w700,
+                              color: textColor,
+                            ) ??
+                            TextStyle(
+                              fontWeight: FontWeight.w700,
+                              color: textColor,
+                            ),
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        block.cell.rangeLabel,
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: theme.textTheme.labelSmall?.copyWith(
+                              color: textColor.withValues(alpha: 0.9),
+                            ) ??
+                            TextStyle(color: textColor.withValues(alpha: 0.9)),
+                      ),
+                    ],
+                  ),
+                ),
+              ),
+      ),
+    );
+  }
+}
+
+enum _TimelineBlockAction { edit, delete }
+
+class _ValueBlockMenu extends StatelessWidget {
+  const _ValueBlockMenu({
+    required this.block,
+    this.onEditEntry,
+    this.onDeleteEntry,
+  });
+
+  final _ValueBlock block;
+  final void Function(LocoAttrVersion entry)? onEditEntry;
+  final void Function(LocoAttrVersion entry)? onDeleteEntry;
+
+  bool get _hasActions => onEditEntry != null || onDeleteEntry != null;
+
+  @override
+  Widget build(BuildContext context) {
+    if (!_hasActions || block.entry == null) {
+      return _ValueBlockView(block: block);
+    }
+
+    Future<void> showContextMenuAt(Offset globalPosition) async {
+      final overlay = Overlay.of(context);
+      final renderBox = overlay?.context.findRenderObject() as RenderBox?;
+      if (renderBox == null) return;
+      // Translate from global screen coordinates into the overlay's local space
+      // so the menu appears where the gesture happened.
+      final localPosition = renderBox.globalToLocal(globalPosition);
+      final position = RelativeRect.fromRect(
+        Rect.fromLTWH(localPosition.dx, localPosition.dy, 1, 1),
+        Offset.zero & renderBox.size,
+      );
+
+      final action = await showMenu<_TimelineBlockAction>(
+        context: context,
+        position: position,
+        items: [
+          if (onEditEntry != null)
+            const PopupMenuItem(
+              value: _TimelineBlockAction.edit,
+              child: Text('Edit'),
+            ),
+          if (onDeleteEntry != null)
+            const PopupMenuItem(
+              value: _TimelineBlockAction.delete,
+              child: Text('Delete'),
+            ),
+        ],
+      );
+
+      final entry = block.entry;
+      if (action == null || entry == null) return;
+      switch (action) {
+        case _TimelineBlockAction.edit:
+          onEditEntry?.call(entry);
+          break;
+        case _TimelineBlockAction.delete:
+          onDeleteEntry?.call(entry);
+          break;
+      }
+    }
+
+    return GestureDetector(
+      behavior: HitTestBehavior.opaque,
+      onLongPressStart: (details) async {
+        if (defaultTargetPlatform == TargetPlatform.android) {
+          HapticFeedback.lightImpact();
+        }
+        await showContextMenuAt(details.globalPosition);
+      },
+      onSecondaryTapDown: (details) async {
+        await showContextMenuAt(details.globalPosition);
+      },
+      child: _ValueBlockView(block: block),
+    );
+  }
+}
+
+String? _formatDate(DateTime? date) {
+  if (date == null) return null;
+  return _dateFormat.format(date);
+}
+
+String _formatAttrLabel(String code) {
+  if (code.isEmpty) return 'Attribute';
+  final parts = code.split('_').where((p) => p.isNotEmpty).toList();
+  if (parts.isEmpty) return code;
+  return parts
+      .map((part) => part.length == 1
+          ? part.toUpperCase()
+          : part[0].toUpperCase() + part.substring(1))
+      .join(' ');
+}
+
+DateTime? _parseDateString(String? value) {
+  if (value == null || value.isEmpty) return null;
+  return DateTime.tryParse(value);
+}
+
+DateTime? _effectiveStart(LocoAttrVersion entry) {
+  return entry.validFrom ??
+      _parseDateString(entry.maskedValidFrom) ??
+      entry.txnFrom;
+}
+
+DateTime _safeEnd(DateTime start, DateTime? end) {
+  if (end == null || !end.isAfter(start)) {
+    return start.add(const Duration(days: 1));
+  }
+  return end;
+}
+
+class _TimelineModel {
+  final List<_AxisSegment> axisSegments;
+  final Map<String, List<_ValueBlock>> attrRows;
+  final String endLabel;
+  final List<DateTime> boundaries;
+  final double axisTotalWidth;
+
+  _TimelineModel({
+    required this.axisSegments,
+    required this.attrRows,
+    required this.endLabel,
+    required this.boundaries,
+    required this.axisTotalWidth,
+  });
+
+  factory _TimelineModel.fromEntries(List<LocoAttrVersion> entries) {
+    final grouped = <String, List<LocoAttrVersion>>{};
+    for (final entry in entries) {
+      grouped.putIfAbsent(entry.attrCode, () => []).add(entry);
+    }
+    final now = DateTime.now();
+    DateTime? minStart;
+    DateTime? maxEnd;
+    final attrSegments = <String, List<_ValueSegment>>{};
+
+    grouped.forEach((attr, items) {
+      items.sort(
+        (a, b) => (_effectiveStart(a) ?? now)
+            .compareTo(_effectiveStart(b) ?? now),
+      );
+      final segments = <_ValueSegment>[];
+      for (int i = 0; i < items.length; i++) {
+        final entry = items[i];
+        final start = _effectiveStart(entry) ?? now;
+        final nextStart = i < items.length - 1
+            ? _effectiveStart(items[i + 1])
+            : null;
+        final rawEnd = entry.validTo ?? nextStart ?? now;
+        final end = _safeEnd(start, rawEnd);
+        segments.add(
+          _ValueSegment(
+            start: start,
+            end: end,
+            value: entry.valueLabel,
+            entry: entry,
+          ),
+        );
+        minStart = minStart == null || start.isBefore(minStart!)
+            ? start
+            : minStart;
+        maxEnd = maxEnd == null || end.isAfter(maxEnd!) ? end : maxEnd;
+      }
+      attrSegments[attr] = segments;
+    });
+
+    minStart ??= now.subtract(const Duration(days: 1));
+    final effectiveMaxEnd = maxEnd ?? now;
+
+    final boundaryDates = <DateTime>{};
+    for (final segments in attrSegments.values) {
+      for (final seg in segments) {
+        boundaryDates.add(seg.start);
+        boundaryDates.add(seg.end);
+      }
+    }
+    boundaryDates.add(effectiveMaxEnd);
+    var boundaries = boundaryDates.toList()..sort();
+    if (boundaries.length < 2) {
+      boundaries = [minStart!, effectiveMaxEnd];
+    }
+
+    final axisSegments = <_AxisSegment>[];
+    const double yearWidth = 240.0;
+    for (int i = 0; i < boundaries.length - 1; i++) {
+      final start = boundaries[i];
+      final end = boundaries[i + 1];
+      const width = yearWidth;
+      final double offset = axisSegments.isEmpty
+          ? 0.0
+          : axisSegments.last.offset + axisSegments.last.width;
+      axisSegments.add(
+        _AxisSegment(
+          start: start,
+          end: end,
+          width: width,
+          offset: offset,
+          label: _formatDate(start) ?? '',
+        ),
+      );
+    }
+    final axisTotalWidth =
+        axisSegments.fold<double>(0, (sum, seg) => sum + seg.width);
+
+    final attrRows = <String, List<_ValueBlock>>{};
+    for (final entry in attrSegments.entries) {
+      final blocks = <_ValueBlock>[];
+      for (final seg in entry.value) {
+        final left = _positionForDate(seg.start, boundaries, axisSegments);
+        final right = _positionForDate(seg.end, boundaries, axisSegments);
+        final span = right - left;
+        final width = span < 2.0 ? 2.0 : span;
+        blocks.add(
+          _ValueBlock(
+            left: left,
+            width: width,
+            cell: _RowCell.fromSegment(seg),
+            entry: seg.entry,
+          ),
+        );
+      }
+      attrRows[entry.key] = blocks;
+    }
+
+    final endLabel = _formatDate(effectiveMaxEnd) ?? 'Now';
+    return _TimelineModel(
+      axisSegments: axisSegments,
+      attrRows: attrRows,
+      endLabel: endLabel,
+      boundaries: boundaries,
+      axisTotalWidth: axisTotalWidth,
+    );
+  }
+
+  static double _positionForDate(
+    DateTime date,
+    List<DateTime> boundaries,
+    List<_AxisSegment> segments,
+  ) {
+    for (int i = 0; i < boundaries.length - 1; i++) {
+      final start = boundaries[i];
+      final end = boundaries[i + 1];
+      if (!date.isAfter(end)) {
+        final seg = segments[i];
+        final span = end.difference(start).inMilliseconds;
+        final elapsed = date.difference(start).inMilliseconds.clamp(0, span);
+        if (span <= 0) return seg.offset;
+        final fraction = elapsed / span;
+        return seg.offset + (seg.width * fraction);
+      }
+    }
+    return segments.isNotEmpty
+        ? segments.last.offset + segments.last.width
+        : 0.0;
+  }
+}
+
+class _AxisSegment {
+  final DateTime start;
+  final DateTime end;
+  final double width;
+  final double offset;
+  final String label;
+
+  _AxisSegment({
+    required this.start,
+    required this.end,
+    required this.width,
+    required this.offset,
+    required this.label,
+  });
+}
+
+class _ValueSegment {
+  final DateTime start;
+  final DateTime end;
+  final String value;
+  final LocoAttrVersion? entry;
+
+  _ValueSegment({
+    required this.start,
+    required this.end,
+    required this.value,
+    this.entry,
+  });
+
+  bool overlaps(DateTime s, DateTime e) {
+    return start.isBefore(e) && end.isAfter(s);
+  }
+
+  _ValueSegment copyWith({DateTime? start, DateTime? end, String? value}) {
+    return _ValueSegment(
+      start: start ?? this.start,
+      end: end ?? this.end,
+      value: value ?? this.value,
+      entry: entry,
+    );
+  }
+}
+
+class _RowCell {
+  final String value;
+  final String rangeLabel;
+  final Color color;
+
+  const _RowCell({
+    required this.value,
+    required this.rangeLabel,
+    required this.color,
+  });
+
+  factory _RowCell.fromSegment(_ValueSegment seg) {
+    if (seg.value.isEmpty) {
+      return const _RowCell(
+        value: '',
+        rangeLabel: '',
+        color: Colors.transparent,
+      );
+    }
+    final displayStart = _formatDate(seg.start) ?? '';
+    return _RowCell(
+      value: seg.value,
+      rangeLabel: displayStart,
+      color: _colorForValue(seg.value),
+    );
+  }
+}
+
+class _ValueBlock {
+  final double left;
+  final double width;
+  final _RowCell cell;
+  final LocoAttrVersion? entry;
+
+  const _ValueBlock({
+    required this.left,
+    required this.width,
+    required this.cell,
+    required this.entry,
+  });
+
+  double get right => left + width;
+
+  _ValueBlock copyWith({
+    double? left,
+    double? width,
+    _RowCell? cell,
+    LocoAttrVersion? entry,
+  }) {
+    return _ValueBlock(
+      left: left ?? this.left,
+      width: width ?? this.width,
+      cell: cell ?? this.cell,
+      entry: entry ?? this.entry,
+    );
+  }
+}
+
+Color _colorForValue(String value) {
+  final hue = (value.hashCode % 360).toDouble();
+  final hsl = HSLColor.fromAHSL(1, hue, 0.55, 0.55);
+  return hsl.toColor();
+}

lib/components/pages/new_entry/new_entry.dart

@@ -0,0 +1,27 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:collection/collection.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:go_router/go_router.dart';
+import 'package:intl/intl.dart';
+import 'package:mileograph_flutter/components/calculator/calculator.dart';
+import 'package:mileograph_flutter/components/pages/traction.dart';
+import 'package:mileograph_flutter/objects/objects.dart';
+import 'package:mileograph_flutter/services/api_service.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:mileograph_flutter/services/navigation_guard.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+part 'new_entry_page.dart';
+part 'new_entry_drafts.dart';
+part 'new_entry_picker_pages.dart';
+part 'new_entry_models.dart';
+part 'new_entry_draft_logic.dart';
+part 'new_entry_submit_logic.dart';
+part 'new_entry_traction_logic.dart';
+
+const String _kDraftPrefsKey = 'new_entry_draft';
+const String _kDraftListPrefsKey = 'new_entry_drafts_list';

lib/components/pages/new_entry/new_entry_draft_logic.dart

@@ -0,0 +1,367 @@
+part of 'new_entry.dart';
+
+extension _NewEntryDraftLogic on _NewEntryPageState {
+  Future<bool> _handleExitIntent() async {
+    if (!mounted) return false;
+    if (_isEditing) return true;
+    if (_formIsEmpty()) return true;
+    if (_activeDraftId != null && !_draftChangedFromBaseline()) {
+      return true;
+    }
+    final choice = await _promptSaveDraft();
+    if (choice == _ExitChoice.cancel) return false;
+    if (choice == _ExitChoice.save) {
+      await _saveDraftEntry(draftId: _activeDraftId);
+    } else if (choice == _ExitChoice.discard) {
+      await _resetFormState(clearDraft: true);
+      _activeDraftId = null;
+    }
+    return true;
+  }
+
+  bool _draftChangedFromBaseline() {
+    if (_loadedDraftSnapshot == null) return true;
+    final current = _buildDraftSnapshot(
+      id: _activeDraftId ?? 'temp',
+      includeTimestamp: false,
+    );
+    return !_snapshotEquality.equals(_loadedDraftSnapshot, current);
+  }
+
+  bool _formIsEmpty() {
+    return _startController.text.trim().isEmpty &&
+        _endController.text.trim().isEmpty &&
+        _headcodeController.text.trim().isEmpty &&
+        _notesController.text.trim().isEmpty &&
+        _networkController.text.trim().isEmpty &&
+        _mileageController.text.trim().isEmpty &&
+        _routeResult == null &&
+        _tractionItems.length <= 1;
+  }
+
+  Future<_ExitChoice> _promptSaveDraft() async {
+    if (!mounted) return _ExitChoice.cancel;
+    final result = await showDialog<_ExitChoice>(
+      context: context,
+      barrierDismissible: false,
+      useRootNavigator: false,
+      builder: (_) => AlertDialog(
+        title: const Text('Save draft?'),
+        content: const Text(
+          'Do you want to save this entry as a draft before leaving?',
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(_ExitChoice.discard),
+            child: const Text('No'),
+          ),
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(_ExitChoice.save),
+            child: const Text('Yes'),
+          ),
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(_ExitChoice.cancel),
+            child: const Text('Cancel'),
+          ),
+        ],
+      ),
+    );
+    return result ?? _ExitChoice.cancel;
+  }
+
+  Future<void> _openDrafts() async {
+    final selected = await Navigator.of(context).push<_StoredDraft>(
+      MaterialPageRoute(
+        builder: (_) => _DraftListPage(
+          loadDrafts: _loadSavedDrafts,
+          onDeleteDraft: _deleteDraft,
+        ),
+      ),
+    );
+    if (selected != null) {
+      _activeDraftId = selected.id;
+      await _loadDraftEntry(selected.data);
+    }
+  }
+
+  Future<void> _saveDraftManually() async {
+    if (_savingDraft) return;
+    if (_formIsEmpty()) {
+      ScaffoldMessenger.maybeOf(context)?.showSnackBar(
+        const SnackBar(content: Text('Nothing to save yet.')),
+      );
+      return;
+    }
+    final hadDraft = _activeDraftId != null;
+    _setState(() => _savingDraft = true);
+    try {
+      await _saveDraftEntry(draftId: _activeDraftId);
+      if (!mounted) return;
+      ScaffoldMessenger.maybeOf(context)?.showSnackBar(
+        SnackBar(content: Text(hadDraft ? 'Draft updated' : 'Draft saved')),
+      );
+    } catch (e) {
+      if (!mounted) return;
+      ScaffoldMessenger.maybeOf(context)?.showSnackBar(
+        SnackBar(content: Text('Failed to save draft: $e')),
+      );
+    } finally {
+      if (mounted) _setState(() => _savingDraft = false);
+    }
+  }
+
+  Future<void> _saveDraft() async {
+    if (_restoringDraft || !_draftPersistenceEnabled) return;
+    final prefs = await SharedPreferences.getInstance();
+    final draft = {
+      "date": _selectedDate.toIso8601String(),
+      "time": {"hour": _selectedTime.hour, "minute": _selectedTime.minute},
+      "start": _startController.text,
+      "end": _endController.text,
+      "headcode": _headcodeController.text,
+      "notes": _notesController.text,
+      "mileage": _mileageController.text,
+      "network": _networkController.text,
+      "useManualMileage": _useManualMileage,
+      "selectedTripId": _selectedTripId,
+      "routeResult": _routeResult == null
+          ? null
+          : {
+              "input_route": _routeResult!.inputRoute,
+              "calculated_route": _routeResult!.calculatedRoute,
+              "costs": _routeResult!.costs,
+              "distance": _routeResult!.distance,
+            },
+      "tractionItems": _serializeTractionItems(),
+    };
+    await prefs.setString(_kDraftPrefsKey, jsonEncode(draft));
+  }
+
+  Future<void> _clearDraft() async {
+    if (!_draftPersistenceEnabled) return;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_kDraftPrefsKey);
+  }
+
+  Future<List<_StoredDraft>> _loadSavedDrafts() async {
+    final prefs = await SharedPreferences.getInstance();
+    final raw = prefs.getString(_kDraftListPrefsKey);
+    if (raw == null || raw.isEmpty) return [];
+    try {
+      final decoded = jsonDecode(raw);
+      if (decoded is! List) return [];
+      return decoded
+          .whereType<Map>()
+          .map((e) => _StoredDraft.fromJson(Map<String, dynamic>.from(e)))
+          .toList()
+        ..sort((a, b) => b.savedAt.compareTo(a.savedAt));
+    } catch (_) {
+      return [];
+    }
+  }
+
+  Future<void> _deleteDraft(String id) async {
+    final drafts = await _loadSavedDrafts();
+    drafts.removeWhere((d) => d.id == id);
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(
+      _kDraftListPrefsKey,
+      jsonEncode(drafts.map((e) => e.toJson()).toList()),
+    );
+    if (_activeDraftId == id) {
+      _activeDraftId = null;
+    }
+  }
+
+  Future<String> _saveDraftEntry({String? draftId}) async {
+    final id = draftId ?? DateTime.now().microsecondsSinceEpoch.toString();
+    final snapshot = _buildDraftSnapshot(id: id);
+    final drafts = await _loadSavedDrafts();
+    final now = DateTime.now();
+    final existingIndex = drafts.indexWhere((d) => d.id == id);
+    final newDraft = _StoredDraft(id: id, savedAt: now, data: snapshot);
+    if (existingIndex >= 0) {
+      drafts[existingIndex] = newDraft;
+    } else {
+      drafts.insert(0, newDraft);
+    }
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(
+      _kDraftListPrefsKey,
+      jsonEncode(drafts.map((e) => e.toJson()).toList()),
+    );
+    _activeDraftId = id;
+    _loadedDraftSnapshot = _buildDraftSnapshot(id: id, includeTimestamp: false);
+    return id;
+  }
+
+  Map<String, dynamic> _buildDraftSnapshot({
+    required String id,
+    bool includeTimestamp = true,
+  }) {
+    final routeStations = _routeResult?.calculatedRoute ?? [];
+    final startVal = _useManualMileage
+        ? _startController.text.trim()
+        : (routeStations.isNotEmpty ? routeStations.first : '');
+    final endVal = _useManualMileage
+        ? _endController.text.trim()
+        : (routeStations.isNotEmpty ? routeStations.last : '');
+    final mileageVal = _useManualMileage
+        ? double.tryParse(_mileageController.text.trim()) ?? 0
+        : (_routeResult?.distance ?? 0);
+    final tractionPayload = _buildTractionPayload();
+    final payload = _useManualMileage
+        ? {
+            "leg_trip": _selectedTripId,
+            "leg_start": startVal,
+            "leg_end": endVal,
+            "leg_begin_time": _legDateTime.toIso8601String(),
+            "leg_network": _networkController.text.trim(),
+            "leg_distance": mileageVal,
+            "isKilometers": false,
+            "leg_notes": _notesController.text.trim(),
+            "leg_headcode": _headcodeController.text.trim(),
+            "locos": tractionPayload,
+          }
+        : {
+            "leg_trip": _selectedTripId,
+            "leg_begin_time": _legDateTime.toIso8601String(),
+            "leg_route": routeStations,
+            "leg_notes": _notesController.text.trim(),
+            "leg_headcode": _headcodeController.text.trim(),
+            "leg_network": _networkController.text.trim(),
+            "locos": tractionPayload,
+            "leg_mileage": _routeResult?.distance ?? mileageVal,
+          };
+    return {
+      "id": id,
+      if (includeTimestamp) "saved_at": DateTime.now().toIso8601String(),
+      "mode": _useManualMileage ? 'manual' : 'auto',
+      "payload": payload,
+      "mileageText": _mileageController.text.trim(),
+      "routeResult": _routeResult == null
+          ? null
+          : {
+              "input_route": _routeResult!.inputRoute,
+              "calculated_route": _routeResult!.calculatedRoute,
+              "costs": _routeResult!.costs,
+              "distance": _routeResult!.distance,
+            },
+      "tractionItems": _serializeTractionItems(),
+    };
+  }
+
+  Future<void> _loadDraftEntry(Map<String, dynamic> data) async {
+    if (!mounted) return;
+    final payloadRaw = data['payload'];
+    if (payloadRaw is! Map) return;
+    final payload = Map<String, dynamic>.from(payloadRaw);
+    final mode = data['mode'] as String?;
+    final useManual =
+        mode == 'manual' ||
+        (payload.containsKey('leg_distance') &&
+            !payload.containsKey('leg_route'));
+    final beginStr = payload['leg_begin_time'] as String?;
+    final beginTime = beginStr == null
+        ? DateTime.now()
+        : DateTime.tryParse(beginStr) ?? DateTime.now();
+    final tripRaw = payload['leg_trip'];
+    final tripId = tripRaw is num ? tripRaw.toInt() : null;
+
+    List<String> routeStations = [];
+    RouteResult? restoredRouteResult;
+    if (!useManual) {
+      if (payload['leg_route'] is List) {
+        routeStations = (payload['leg_route'] as List)
+            .map((e) => e.toString())
+            .toList();
+      }
+      final rr = data['routeResult'];
+      if (rr is Map<String, dynamic>) {
+        restoredRouteResult = RouteResult(
+          inputRoute:
+              (rr['input_route'] as List?)?.map((e) => e.toString()).toList() ??
+                  routeStations,
+          calculatedRoute:
+              (rr['calculated_route'] as List?)
+                      ?.map((e) => e.toString())
+                      .toList() ??
+                  routeStations,
+          costs:
+              (rr['costs'] as List?)
+                      ?.map((e) => (e as num).toDouble())
+                      .toList() ??
+                  [],
+          distance:
+              (rr['distance'] as num?)?.toDouble() ??
+                  (payload['leg_mileage'] as num?)?.toDouble() ??
+                  0,
+        );
+      } else if (routeStations.isNotEmpty) {
+        restoredRouteResult = RouteResult(
+          inputRoute: routeStations,
+          calculatedRoute: routeStations,
+          costs: const [],
+          distance: (payload['leg_mileage'] as num?)?.toDouble() ?? 0,
+        );
+      }
+    }
+
+    _restoringDraft = true;
+    _setState(() {
+      _useManualMileage = useManual;
+      _selectedDate = beginTime;
+      _selectedTime = TimeOfDay.fromDateTime(beginTime);
+      _selectedTripId = tripId == null || tripId == 0 ? null : tripId;
+      _routeResult = restoredRouteResult;
+      _headcodeController.text = (payload['leg_headcode'] as String? ?? '')
+          .toUpperCase();
+      _networkController.text = (payload['leg_network'] as String? ?? '')
+          .toUpperCase();
+      _notesController.text = payload['leg_notes'] ?? '';
+
+      if (useManual) {
+        _startController.text = payload['leg_start'] ?? '';
+        _endController.text = payload['leg_end'] ?? '';
+        final miles = (payload['leg_distance'] as num?)?.toDouble();
+        _mileageController.text = miles == null || miles == 0
+            ? ''
+            : miles.toStringAsFixed(2);
+      } else {
+        _startController.text =
+            routeStations.isNotEmpty ? routeStations.first : '';
+        _endController.text =
+            routeStations.isNotEmpty ? routeStations.last : '';
+        final dist = _routeResult?.distance ?? 0;
+        _mileageController.text = dist == 0 ? '' : dist.toStringAsFixed(2);
+      }
+
+      final tractionRaw = data['tractionItems'];
+      if (tractionRaw is List) {
+        _restoreTractionItems(
+          List<Map<String, dynamic>>.from(tractionRaw.cast<Map>()),
+        );
+      } else {
+        _tractionItems
+          ..clear()
+          ..add(_TractionItem.marker());
+      }
+      _lastSubmittedSnapshot = null;
+      final idRaw = data['id'];
+      if (idRaw != null) {
+        _activeDraftId = idRaw.toString();
+      }
+    });
+    final baselineId =
+        _activeDraftId ?? data['id']?.toString() ?? DateTime.now().toString();
+    _loadedDraftSnapshot = _buildDraftSnapshot(
+      id: baselineId,
+      includeTimestamp: false,
+    );
+    _restoringDraft = false;
+  }
+
+  Future<void> _loadDraft() async {
+    // legacy single draft no-op
+  }
+}

lib/components/pages/new_entry/new_entry_drafts.dart

@@ -0,0 +1,179 @@
+part of 'new_entry.dart';
+
+enum _ExitChoice { save, discard, cancel }
+
+class _StoredDraft {
+  final String id;
+  final DateTime savedAt;
+  final Map<String, dynamic> data;
+
+  _StoredDraft({required this.id, required this.savedAt, required this.data});
+
+  factory _StoredDraft.fromJson(Map<String, dynamic> json) {
+    final savedAt = DateTime.tryParse(json['saved_at'] ?? '') ?? DateTime.now();
+    final data = Map<String, dynamic>.from(json['data'] as Map? ?? {});
+    final embeddedId = data['id']?.toString();
+    return _StoredDraft(
+      id:
+          json['id']?.toString() ??
+          embeddedId ??
+          savedAt.microsecondsSinceEpoch.toString(),
+      savedAt: savedAt,
+      data: data,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {"id": id, "saved_at": savedAt.toIso8601String(), "data": data};
+  }
+}
+
+class _DraftListPage extends StatelessWidget {
+  const _DraftListPage({required this.loadDrafts, required this.onDeleteDraft});
+  final Future<List<_StoredDraft>> Function() loadDrafts;
+  final Future<void> Function(String id) onDeleteDraft;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('Drafts')),
+      body: FutureBuilder<List<_StoredDraft>>(
+        future: loadDrafts(),
+        builder: (context, snapshot) {
+          if (snapshot.connectionState == ConnectionState.waiting) {
+            return const Center(child: CircularProgressIndicator());
+          }
+          final drafts = snapshot.data ?? const [];
+          if (drafts.isEmpty) {
+            return const Center(child: Text('No drafts saved yet.'));
+          }
+          return _DraftListBody(drafts: drafts, onDelete: onDeleteDraft);
+        },
+      ),
+    );
+  }
+}
+
+class _DraftListBody extends StatefulWidget {
+  const _DraftListBody({required this.drafts, required this.onDelete});
+  final List<_StoredDraft> drafts;
+  final Future<void> Function(String id) onDelete;
+
+  @override
+  State<_DraftListBody> createState() => _DraftListBodyState();
+}
+
+class _DraftListBodyState extends State<_DraftListBody> {
+  late final List<_StoredDraft> _drafts = List.of(widget.drafts);
+
+  @override
+  Widget build(BuildContext context) {
+    return ListView.separated(
+      itemCount: _drafts.length,
+      separatorBuilder: (context, _) => const Divider(height: 0),
+      itemBuilder: (context, index) {
+        final draft = _drafts[index];
+        final routeLine = _draftSubtitle(draft);
+        final metaLine = _draftMetaLine(draft);
+        return ListTile(
+          title: Text(DateFormat.yMMMd().add_jm().format(draft.savedAt)),
+          subtitle: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              if (routeLine != null) Text(routeLine),
+              if (metaLine.isNotEmpty) Text(metaLine),
+            ],
+          ),
+          trailing: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              IconButton(
+                tooltip: 'Delete draft',
+                icon: const Icon(Icons.delete),
+                onPressed: () => _confirmDelete(context, draft),
+              ),
+              const Icon(Icons.chevron_right),
+            ],
+          ),
+          onTap: () => Navigator.of(context).pop(draft),
+        );
+      },
+    );
+  }
+
+  Future<void> _confirmDelete(BuildContext context, _StoredDraft draft) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (dialogCtx) => AlertDialog(
+        title: const Text('Delete draft?'),
+        content: const Text('This draft will be removed permanently.'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(dialogCtx).pop(false),
+            child: const Text('Cancel'),
+          ),
+          TextButton(
+            onPressed: () => Navigator.of(dialogCtx).pop(true),
+            child: const Text('Delete'),
+          ),
+        ],
+      ),
+    );
+    if (confirmed != true) return;
+    await widget.onDelete(draft.id);
+    if (!mounted) return;
+    setState(() {
+      _drafts.removeWhere((d) => d.id == draft.id);
+    });
+  }
+
+  String? _draftSubtitle(_StoredDraft draft) {
+    final payload = draft.data['payload'];
+    if (payload is! Map) return null;
+    final map = Map<String, dynamic>.from(payload);
+    String start = map['leg_start']?.toString() ?? '';
+    String end = map['leg_end']?.toString() ?? '';
+    if (start.isEmpty && end.isEmpty) {
+      if (map['leg_route'] is List && (map['leg_route'] as List).isNotEmpty) {
+        start = (map['leg_route'] as List).first.toString();
+        end = (map['leg_route'] as List).last.toString();
+      }
+    }
+    if (start.isEmpty && end.isEmpty) return null;
+    if (start.isNotEmpty && end.isNotEmpty) {
+      return '$start → $end';
+    }
+    return start.isNotEmpty ? start : end;
+  }
+
+  String _draftMetaLine(_StoredDraft draft) {
+    final payload = draft.data['payload'];
+    if (payload is! Map) return '';
+    final map = Map<String, dynamic>.from(payload);
+    final parts = <String>[];
+    if ((map['leg_trip'] as int? ?? 0) != 0) {
+      parts.add('Trip ${map['leg_trip']}');
+    }
+    final headcode = (map['leg_headcode'] as String? ?? '').trim();
+    if (headcode.isNotEmpty) parts.add('Headcode $headcode');
+    final network = (map['leg_network'] as String? ?? '').trim();
+    if (network.isNotEmpty) parts.add('Network $network');
+    final notes = (map['leg_notes'] as String? ?? '').trim();
+    if (notes.isNotEmpty) parts.add('Notes');
+    final mileage =
+        (map['leg_distance'] as num?)?.toDouble() ??
+        (map['leg_mileage'] as num?)?.toDouble();
+    if (mileage != null && mileage > 0) {
+      parts.add('${mileage.toStringAsFixed(1)} mi');
+    } else if (map['leg_route'] is List &&
+        (map['leg_route'] as List).isNotEmpty) {
+      parts.add('Route ${(map['leg_route'] as List).length} stops');
+    }
+    final locos = map['locos'];
+    if (locos is List && locos.isNotEmpty) {
+      parts.add('${locos.length} traction');
+    }
+    return parts.join(' • ');
+  }
+}
+

lib/components/pages/new_entry/new_entry_models.dart

@@ -0,0 +1,25 @@
+part of 'new_entry.dart';
+
+class _TractionItem {
+  final LocoSummary? loco;
+  final bool powering;
+  final bool isMarker;
+
+  _TractionItem({
+    required this.loco,
+    this.powering = true,
+    this.isMarker = false,
+  });
+
+  factory _TractionItem.marker() =>
+      _TractionItem(loco: null, powering: false, isMarker: true);
+
+  _TractionItem copyWith({LocoSummary? loco, bool? powering, bool? isMarker}) {
+    return _TractionItem(
+      loco: loco ?? this.loco,
+      powering: powering ?? this.powering,
+      isMarker: isMarker ?? this.isMarker,
+    );
+  }
+}
+

lib/components/pages/new_entry/new_entry_page.dart

@@ -0,0 +1,799 @@
+part of 'new_entry.dart';
+
+class NewEntryPage extends StatefulWidget {
+  const NewEntryPage({super.key, this.editLegId});
+
+  final int? editLegId;
+
+  @override
+  State<NewEntryPage> createState() => _NewEntryPageState();
+}
+
+class _NewEntryPageState extends State<NewEntryPage> {
+  late final NavigationGuardCallback _exitGuard;
+  final _formKey = GlobalKey<FormState>();
+  DateTime _selectedDate = DateTime.now();
+  TimeOfDay _selectedTime = TimeOfDay.now();
+  final _startController = TextEditingController();
+  final _endController = TextEditingController();
+  final _headcodeController = TextEditingController();
+  final _notesController = TextEditingController();
+  final _mileageController = TextEditingController();
+  final _networkController = TextEditingController();
+  bool _submitting = false;
+  bool _useManualMileage = false;
+  RouteResult? _routeResult;
+  final List<_TractionItem> _tractionItems = [_TractionItem.marker()];
+  int? _selectedTripId;
+  bool _restoringDraft = false;
+  bool _loadingEdit = false;
+  bool _savingDraft = false;
+  String? _loadError;
+  Map<String, dynamic>? _lastSubmittedSnapshot;
+  Map<String, dynamic>? _loadedDraftSnapshot;
+  final DeepCollectionEquality _snapshotEquality =
+      const DeepCollectionEquality();
+  String? _activeDraftId;
+
+  bool get _isEditing => widget.editLegId != null;
+  bool get _draftPersistenceEnabled =>
+      false; // legacy single draft disabled in favor of draft list
+
+  @override
+  void initState() {
+    super.initState();
+    _exitGuard = _handleExitIntent;
+    NavigationGuard.register(_exitGuard);
+    // legacy single-draft auto-save listeners removed in favor of explicit multi-draft flow
+    Future.microtask(() {
+      if (!mounted) return;
+      final data = context.read<DataService>();
+      data.fetchClassList();
+      data.fetchTripOptions();
+      if (_draftPersistenceEnabled) {
+        _loadDraft();
+      }
+      if (_isEditing && widget.editLegId != null) {
+        _loadLegForEdit(widget.editLegId!);
+      }
+    });
+  }
+
+  @override
+  void dispose() {
+    NavigationGuard.unregister(_exitGuard);
+    _startController.dispose();
+    _endController.dispose();
+    _headcodeController.dispose();
+    _notesController.dispose();
+    _mileageController.dispose();
+    _networkController.dispose();
+    super.dispose();
+  }
+
+  void _setState(VoidCallback fn) {
+    if (!mounted) return;
+    // ignore: invalid_use_of_protected_member
+    setState(fn);
+  }
+
+  Widget _buildTripSelector(BuildContext context) {
+    final trips = context.watch<DataService>().tripList;
+    final sorted = [...trips]..sort((a, b) => b.tripId.compareTo(a.tripId));
+    final tripIds = sorted.map((t) => t.tripId).toSet();
+    final selectedValue =
+        (_selectedTripId != null && tripIds.contains(_selectedTripId))
+        ? _selectedTripId
+        : null;
+    return Row(
+      children: [
+        Expanded(
+          child: DropdownButtonFormField<int?>(
+            value: selectedValue,
+            decoration: const InputDecoration(
+              labelText: 'Trip',
+              border: OutlineInputBorder(),
+            ),
+            items: [
+              const DropdownMenuItem(value: null, child: Text('No trip')),
+              ...sorted.map(
+                (t) => DropdownMenuItem<int?>(
+                  value: t.tripId,
+                  child: Text(t.tripName),
+                ),
+              ),
+            ],
+            onChanged: (val) {
+              setState(() => _selectedTripId = val);
+              _saveDraft();
+            },
+          ),
+        ),
+        const SizedBox(width: 8),
+        ElevatedButton.icon(
+          onPressed: () => _showAddTripDialog(context),
+          icon: const Icon(Icons.add),
+          label: const Text('New Trip'),
+        ),
+      ],
+    );
+  }
+
+  Future<void> _showAddTripDialog(BuildContext context) async {
+    final controller = TextEditingController();
+    final result = await showDialog<String>(
+      context: context,
+      builder: (dialogContext) => AlertDialog(
+        title: const Text('New Trip'),
+        content: TextField(
+          controller: controller,
+          decoration: const InputDecoration(labelText: 'Trip name'),
+          autofocus: true,
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(dialogContext).pop(),
+            child: const Text('Cancel'),
+          ),
+          ElevatedButton(
+            onPressed: () => Navigator.of(dialogContext).pop(controller.text.trim()),
+            child: const Text('Add'),
+          ),
+        ],
+      ),
+    );
+    if (!context.mounted) {
+      controller.dispose();
+      return;
+    }
+    if (result != null && result.isNotEmpty) {
+        final api = context.read<ApiService>();
+        final data = context.read<DataService>();
+        final messenger = ScaffoldMessenger.maybeOf(context);
+        try {
+          final encoded = Uri.encodeComponent(result);
+          final res = await api.put('/trips/new?trip_name=$encoded', {});
+          await data.fetchTripOptions();
+          if (!context.mounted) return;
+          final trips = data.tripList;
+        final apiTripId = res is Map ? res['trip_id'] as int? : null;
+        TripSummary match;
+        try {
+          match = trips.firstWhere(
+            (t) =>
+                (apiTripId != null && t.tripId == apiTripId) ||
+                t.tripName == result,
+          );
+        } catch (_) {
+          match = TripSummary(
+            tripId: apiTripId ?? 0,
+            tripName: result,
+            tripMileage: 0,
+          );
+          data.upsertTripSummary(match);
+        }
+        setState(() => _selectedTripId = match.tripId);
+        _saveDraft();
+      } catch (e) {
+        if (!context.mounted) return;
+        messenger?.showSnackBar(
+          SnackBar(content: Text('Failed to add trip: $e')),
+        );
+      } finally {
+        controller.dispose();
+      }
+    } else {
+      controller.dispose();
+    }
+  }
+
+  Future<void> _openCalculator() async {
+    final initialStations = _routeResult?.inputRoute.isNotEmpty == true
+        ? _routeResult!.inputRoute
+        : (_routeResult?.calculatedRoute ?? const []);
+    final result = await Navigator.of(context).push<RouteResult>(
+      MaterialPageRoute(
+        builder: (_) => _CalculatorPickerPage(
+          initialStations: initialStations.isEmpty ? null : initialStations,
+          onResult: (res) => Navigator.of(context).pop(res),
+        ),
+      ),
+    );
+    if (result != null) {
+      setState(() {
+        _routeResult = result;
+        _mileageController.text = result.distance.toStringAsFixed(2);
+        _useManualMileage = false;
+      });
+      _saveDraft();
+    }
+  }
+
+  Future<void> _pickDate() async {
+    final picked = await showDatePicker(
+      context: context,
+      initialDate: _selectedDate,
+      firstDate: DateTime(1970),
+      lastDate: DateTime.now().add(const Duration(days: 365)),
+    );
+    if (picked != null) setState(() => _selectedDate = picked);
+    _saveDraft();
+  }
+
+  Future<void> _pickTime() async {
+    final picked = await showTimePicker(
+      context: context,
+      initialTime: _selectedTime,
+    );
+    if (picked != null) {
+      setState(() => _selectedTime = picked);
+      _saveDraft();
+    }
+  }
+
+  Future<void> _loadLegForEdit(int legId) async {
+    setState(() {
+      _loadingEdit = true;
+      _loadError = null;
+    });
+    try {
+      final api = context.read<ApiService>();
+      final json = await api.get('/legs/by-id/$legId');
+      if (!mounted) return;
+      if (json is! Map<String, dynamic>) {
+        throw Exception('Unexpected response for leg $legId');
+      }
+      final beginTime =
+          DateTime.tryParse(json['leg_begin_time'] ?? '') ?? _selectedDate;
+      final routeStations = _parseRouteStations(json['leg_route']);
+      final mileageVal = (json['leg_mileage'] as num?)?.toDouble() ?? 0.0;
+      final useManual = routeStations.isEmpty;
+      final routeResult = useManual
+          ? null
+          : RouteResult(
+              inputRoute: routeStations,
+              calculatedRoute: routeStations,
+              costs: const <double>[],
+              distance: mileageVal,
+            );
+      final tractionItems = _buildTractionFromApi(
+        (json['locos'] as List? ?? [])
+            .whereType<Map>()
+            .map((e) => Map<String, dynamic>.from(e))
+            .toList(),
+      );
+
+      _restoringDraft = true;
+      setState(() {
+        final tripRaw = json['leg_trip'];
+        final tripId = tripRaw is num ? tripRaw.toInt() : null;
+        _selectedTripId = tripId == null || tripId == 0 ? null : tripId;
+        _selectedDate = beginTime;
+        _selectedTime = TimeOfDay.fromDateTime(beginTime);
+        _useManualMileage = useManual;
+        _routeResult = routeResult;
+        _startController.text = json['leg_start'] ?? '';
+        _endController.text = json['leg_end'] ?? '';
+        _headcodeController.text = (json['leg_headcode'] as String? ?? '')
+            .toUpperCase();
+        _notesController.text = json['leg_notes'] ?? '';
+        _networkController.text = (json['leg_network'] as String? ?? '')
+            .toUpperCase();
+        _mileageController.text = mileageVal == 0
+            ? ''
+            : mileageVal.toStringAsFixed(2);
+        _tractionItems
+          ..clear()
+          ..addAll(tractionItems);
+        if (_tractionItems.where((e) => e.isMarker).isEmpty) {
+          _tractionItems.insert(0, _TractionItem.marker());
+        }
+        _lastSubmittedSnapshot = null;
+      });
+    } catch (e) {
+      if (!mounted) return;
+      setState(() {
+        _loadError = 'Failed to load entry: $e';
+      });
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text('Failed to load entry: $e')));
+    } finally {
+      _restoringDraft = false;
+      if (mounted) {
+        setState(() => _loadingEdit = false);
+      }
+    }
+  }
+
+  List<String> _parseRouteStations(dynamic raw) {
+    if (raw is List) {
+      return raw.map((e) => e.toString()).toList();
+    }
+    if (raw is String) {
+      final trimmed = raw.trim();
+      if (trimmed.isEmpty) return [];
+      try {
+        final decoded = jsonDecode(trimmed);
+        if (decoded is List) {
+          return decoded.map((e) => e.toString()).toList();
+        }
+      } catch (_) {
+        // ignore and try alternative parsing
+      }
+      if (trimmed.startsWith('[') && trimmed.endsWith(']')) {
+        try {
+          final replaced = trimmed.replaceAll("'", '"');
+          final decoded = jsonDecode(replaced);
+          if (decoded is List) {
+            return decoded.map((e) => e.toString()).toList();
+          }
+        } catch (_) {}
+      }
+      if (trimmed.contains('->')) {
+        return trimmed
+            .split('->')
+            .map((e) => e.trim())
+            .where((e) => e.isNotEmpty)
+            .toList();
+      }
+      if (trimmed.contains(',')) {
+        return trimmed
+            .split(',')
+            .map((e) => e.trim())
+            .where((e) => e.isNotEmpty)
+            .toList();
+      }
+      return [trimmed];
+    }
+    return [];
+  }
+
+  DateTime get _legDateTime => DateTime(
+    _selectedDate.year,
+    _selectedDate.month,
+    _selectedDate.day,
+    _selectedTime.hour,
+    _selectedTime.minute,
+  );
+
+  @override
+  Widget build(BuildContext context) {
+    Widget body;
+    if (_isEditing && _loadingEdit) {
+      body = const Center(child: CircularProgressIndicator());
+    } else if (_isEditing && _loadError != null) {
+      body = Center(child: Text(_loadError!));
+    } else {
+      final isMobile = MediaQuery.of(context).size.width < 700;
+      body = Form(
+        key: _formKey,
+        child: LayoutBuilder(
+          builder: (context, constraints) {
+            final twoCol = !isMobile && constraints.maxWidth > 1000;
+            final tractionEmpty = _tractionItems.length == 1;
+            final mileageEmpty = !_useManualMileage && _routeResult == null;
+            final balancePanels = twoCol && tractionEmpty && mileageEmpty;
+            final balancedHeight = balancePanels ? 165.0 : null;
+
+            final detailPanel = _section('Details', [
+              Row(
+                children: [
+                  TextButton.icon(
+                    style: TextButton.styleFrom(
+                      padding: EdgeInsets.zero,
+                      minimumSize: const Size(0, 36),
+                      tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                    ),
+                    onPressed: _isEditing ? null : _openDrafts,
+                    icon: const Icon(Icons.list_alt, size: 16),
+                    label: const Text('Drafts'),
+                  ),
+                  const SizedBox(width: 12),
+                  TextButton.icon(
+                    style: TextButton.styleFrom(
+                      padding: EdgeInsets.zero,
+                      minimumSize: const Size(0, 36),
+                      tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                    ),
+                    onPressed: _isEditing || _savingDraft || _submitting
+                        ? null
+                        : _saveDraftManually,
+                    icon: _savingDraft
+                        ? const SizedBox(
+                            width: 16,
+                            height: 16,
+                            child: CircularProgressIndicator(strokeWidth: 2),
+                          )
+                        : const Icon(Icons.save_alt, size: 16),
+                    label: Text(_savingDraft ? 'Saving...' : 'Save to drafts'),
+                  ),
+                  const Spacer(),
+                  TextButton.icon(
+                    style: TextButton.styleFrom(
+                      padding: EdgeInsets.zero,
+                      minimumSize: const Size(0, 36),
+                      tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                    ),
+                    onPressed: _submitting
+                        ? null
+                        : () => _resetFormState(clearDraft: true),
+                    icon: const Icon(Icons.clear, size: 16),
+                    label: const Text('Clear form'),
+                  ),
+                ],
+              ),
+              _buildTripSelector(context),
+              Row(
+                children: [
+                  Expanded(
+                    child: OutlinedButton.icon(
+                      onPressed: _pickDate,
+                      icon: const Icon(Icons.calendar_today),
+                      label: Text(DateFormat.yMMMd().format(_selectedDate)),
+                    ),
+                  ),
+                  const SizedBox(width: 12),
+                  Expanded(
+                    child: OutlinedButton.icon(
+                      onPressed: _pickTime,
+                      icon: const Icon(Icons.schedule),
+                      label: Text(_selectedTime.format(context)),
+                    ),
+                  ),
+                ],
+              ),
+              if (_useManualMileage)
+                Row(
+                  children: [
+                    Expanded(
+                      child: TextFormField(
+                        controller: _startController,
+                        decoration: const InputDecoration(
+                          labelText: 'From',
+                          border: OutlineInputBorder(),
+                        ),
+                        validator: (v) => !_useManualMileage
+                            ? null
+                            : (v == null || v.isEmpty ? 'Required' : null),
+                      ),
+                    ),
+                    const SizedBox(width: 12),
+                    Expanded(
+                      child: TextFormField(
+                        controller: _endController,
+                        decoration: const InputDecoration(
+                          labelText: 'To',
+                          border: OutlineInputBorder(),
+                        ),
+                        validator: (v) => !_useManualMileage
+                            ? null
+                            : (v == null || v.isEmpty ? 'Required' : null),
+                      ),
+                    ),
+                  ],
+                ),
+              TextFormField(
+                controller: _headcodeController,
+                textCapitalization: TextCapitalization.characters,
+                inputFormatters: const [_UpperCaseTextFormatter()],
+                decoration: const InputDecoration(
+                  labelText: 'Headcode',
+                  border: OutlineInputBorder(),
+                ),
+              ),
+              TextFormField(
+                controller: _networkController,
+                textCapitalization: TextCapitalization.characters,
+                inputFormatters: const [_UpperCaseTextFormatter()],
+                decoration: const InputDecoration(
+                  labelText: 'Network',
+                  border: OutlineInputBorder(),
+                ),
+              ),
+              TextFormField(
+                controller: _notesController,
+                maxLines: 3,
+                decoration: const InputDecoration(
+                  labelText: 'Notes',
+                  border: OutlineInputBorder(),
+                ),
+              ),
+            ]);
+
+            final tractionPanel = _section('Traction', [
+              Align(
+                alignment: Alignment.centerLeft,
+                child: ElevatedButton.icon(
+                  onPressed: _openTractionPicker,
+                  icon: const Icon(Icons.search),
+                  label: const Text('Search traction'),
+                ),
+              ),
+              _buildTractionList(),
+            ], minHeight: balancedHeight);
+
+            final mileagePanel = _section(
+              'Mileage',
+              [
+                if (!_useManualMileage)
+                  Align(
+                    alignment: Alignment.centerLeft,
+                    child: TextButton.icon(
+                      style: TextButton.styleFrom(
+                        padding: const EdgeInsets.symmetric(
+                          horizontal: 10,
+                          vertical: 6,
+                        ),
+                        minimumSize: const Size(0, 32),
+                      ),
+                      onPressed: _openCalculator,
+                      icon: const Icon(Icons.calculate, size: 18),
+                      label: const Text('Open mileage calculator'),
+                    ),
+                  ),
+                if (_useManualMileage)
+                  TextFormField(
+                    controller: _mileageController,
+                    keyboardType: const TextInputType.numberWithOptions(
+                      decimal: true,
+                    ),
+                    decoration: const InputDecoration(
+                      labelText: 'Mileage (mi)',
+                      border: OutlineInputBorder(),
+                    ),
+                  )
+                else if (_routeResult != null)
+                  ListTile(
+                    contentPadding: EdgeInsets.zero,
+                    title: const Text('Calculated mileage'),
+                    subtitle: Text(
+                      '${_routeResult!.distance.toStringAsFixed(2)} mi',
+                    ),
+                  )
+                else
+                  const Padding(
+                    padding: EdgeInsets.symmetric(vertical: 8.0),
+                    child: Text(
+                      'No route selected. Use the calculator to add a route.',
+                    ),
+                  ),
+              ],
+              trailing: FilterChip(
+                label: Text(_useManualMileage ? 'Manual' : 'Automatic'),
+                selected: _useManualMileage,
+                onSelected: (val) {
+                  setState(() => _useManualMileage = val);
+                  _saveDraft();
+                },
+              ),
+              minHeight: balancedHeight,
+            );
+
+            return SingleChildScrollView(
+              padding: const EdgeInsets.all(16),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.stretch,
+                children: [
+                  detailPanel,
+                  const SizedBox(height: 16),
+                  twoCol
+                      ? Row(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Expanded(child: tractionPanel),
+                            const SizedBox(width: 16),
+                            Expanded(child: mileagePanel),
+                          ],
+                        )
+                      : Column(
+                          children: [
+                            tractionPanel,
+                            const SizedBox(height: 16),
+                            mileagePanel,
+                          ],
+                        ),
+                  const SizedBox(height: 12),
+                  ElevatedButton.icon(
+                    onPressed: _submitting ? null : _submit,
+                    icon: _submitting
+                        ? const SizedBox(
+                            height: 16,
+                            width: 16,
+                            child: CircularProgressIndicator(strokeWidth: 2),
+                          )
+                        : const Icon(Icons.send),
+                    label: Text(
+                      _submitting
+                          ? (_isEditing ? 'Saving...' : 'Submitting...')
+                          : (_isEditing ? 'Save changes' : 'Submit entry'),
+                    ),
+                  ),
+                ],
+              ),
+            );
+          },
+        ),
+      );
+    }
+
+    return PopScope(
+      canPop: false,
+      onPopInvokedWithResult: (didPop, _) async {
+        if (didPop) return;
+        final allow = await _handleExitIntent();
+        if (allow && context.mounted) {
+          final router = GoRouter.of(context);
+          if (router.canPop()) {
+            context.pop();
+          } else {
+            context.go('/');
+          }
+        }
+      },
+      child: Scaffold(
+        appBar: _isEditing
+            ? AppBar(
+                leading: IconButton(
+                  icon: const Icon(Icons.arrow_back),
+                  onPressed: () async {
+                    if (!await _handleExitIntent()) return;
+                    if (!context.mounted) return;
+                    final router = GoRouter.of(context);
+                    if (router.canPop()) {
+                      context.pop();
+                    } else {
+                      context.go('/');
+                    }
+                  },
+                ),
+                title: const Text('Edit entry'),
+              )
+            : null,
+        body: body,
+      ),
+    );
+  }
+
+  Widget _buildTractionList() {
+    if (_tractionItems.length == 1) {
+      return const Padding(
+        padding: EdgeInsets.symmetric(vertical: 8.0),
+        child: Text('No traction selected yet.'),
+      );
+    }
+    return ReorderableListView.builder(
+      shrinkWrap: true,
+      physics: const NeverScrollableScrollPhysics(),
+      buildDefaultDragHandles: false,
+      onReorder: (oldIndex, newIndex) {
+        if (newIndex > oldIndex) newIndex -= 1;
+        setState(() {
+          final item = _tractionItems.removeAt(oldIndex);
+          _tractionItems.insert(newIndex, item);
+        });
+        _saveDraft();
+      },
+      itemCount: _tractionItems.length,
+      itemBuilder: (context, index) {
+        final item = _tractionItems[index];
+        if (item.isMarker) {
+          return Card(
+            key: const ValueKey('marker'),
+            color: Theme.of(context).colorScheme.surfaceContainerHighest,
+            child: const ListTile(
+              leading: Icon(Icons.train),
+              title: Text('Rolling stock marker'),
+              subtitle: Text(
+                'Place locomotives above/below. Positions set relative to this.',
+              ),
+            ),
+          );
+        }
+        final loco = item.loco!;
+        final markerIndex = _tractionItems.indexWhere(
+          (element) => element.isMarker,
+        );
+        final pos = index > markerIndex
+            ? -(index - markerIndex)
+            : (markerIndex - 1) - index;
+        return Card(
+          key: ValueKey('${loco.locoClass}-${loco.number}-$index'),
+          child: ListTile(
+            leading: ReorderableDragStartListener(
+              index: index,
+              child: const Icon(Icons.drag_indicator),
+            ),
+            title: Text('${loco.locoClass} ${loco.number}'),
+            subtitle: Text('${loco.name ?? ''} · Position $pos'),
+            trailing: Row(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                const Text('Powering'),
+                Switch(
+                  value: item.powering,
+                  onChanged: (v) {
+                    setState(() {
+                      _tractionItems[index] = item.copyWith(powering: v);
+                    });
+                    _saveDraft();
+                  },
+                ),
+                IconButton(
+                  icon: const Icon(Icons.delete),
+                  onPressed: () {
+                    setState(() {
+                      _tractionItems.removeAt(index);
+                    });
+                    _saveDraft();
+                  },
+                ),
+              ],
+            ),
+          ),
+        );
+      },
+    );
+  }
+
+  Widget _section(
+    String title,
+    List<Widget> children, {
+    Widget? trailing,
+    double? minHeight,
+  }) {
+    Widget card = Card(
+      child: Padding(
+        padding: const EdgeInsets.all(12.0),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                Text(
+                  title,
+                  style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                    fontWeight: FontWeight.bold,
+                  ),
+                ),
+                if (trailing != null) trailing,
+              ],
+            ),
+            const SizedBox(height: 8),
+            ...children.map(
+              (w) => Padding(
+                padding: const EdgeInsets.symmetric(vertical: 6),
+                child: w,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+
+    if (minHeight != null) {
+      card = ConstrainedBox(
+        constraints: BoxConstraints(minHeight: minHeight),
+        child: card,
+      );
+    }
+
+    return card;
+  }
+}
+
+class _UpperCaseTextFormatter extends TextInputFormatter {
+  const _UpperCaseTextFormatter();
+
+  @override
+  TextEditingValue formatEditUpdate(
+    TextEditingValue oldValue,
+    TextEditingValue newValue,
+  ) {
+    return newValue.copyWith(
+      text: newValue.text.toUpperCase(),
+      selection: newValue.selection,
+    );
+  }
+}

lib/components/pages/new_entry/new_entry_picker_pages.dart

@@ -0,0 +1,27 @@
+part of 'new_entry.dart';
+
+class _CalculatorPickerPage extends StatelessWidget {
+  const _CalculatorPickerPage({
+    required this.onResult,
+    this.initialStations,
+  });
+  final ValueChanged<RouteResult> onResult;
+  final List<String>? initialStations;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        leading: IconButton(
+          icon: const Icon(Icons.arrow_back),
+          onPressed: () => Navigator.of(context).pop(),
+        ),
+        title: const Text('Mileage calculator'),
+      ),
+      body: RouteCalculator(
+        onApplyRoute: onResult,
+        initialStations: initialStations,
+      ),
+    );
+  }
+}

lib/components/pages/new_entry/new_entry_submit_logic.dart

@@ -0,0 +1,221 @@
+part of 'new_entry.dart';
+
+extension _NewEntrySubmitLogic on _NewEntryPageState {
+  Future<bool> _validateRequiredFields() async {
+    final missing = <String>[];
+
+    if (_useManualMileage) {
+      if (_startController.text.trim().isEmpty) missing.add('From');
+      if (_endController.text.trim().isEmpty) missing.add('To');
+      final mileageText = _mileageController.text.trim();
+      if (double.tryParse(mileageText) == null) {
+        missing.add('Mileage');
+      }
+    } else {
+      if (_routeResult == null || _routeResult!.calculatedRoute.isEmpty) {
+        missing.add('Route');
+      }
+    }
+
+    if (_networkController.text.trim().isEmpty) {
+      missing.add('Network');
+    }
+
+    if (missing.isEmpty) return true;
+    if (!mounted) return false;
+
+    final fieldList = missing.join(', ');
+    await showDialog<void>(
+      context: context,
+      useRootNavigator: false,
+      builder: (dialogCtx) => AlertDialog(
+        title: const Text('Required field missing'),
+        content: Text(
+          missing.length == 1
+              ? 'Please fill the following field: $fieldList.'
+              : 'Please fill the following fields: $fieldList.',
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(dialogCtx).pop(),
+            child: const Text('OK'),
+          ),
+        ],
+      ),
+    );
+    return false;
+  }
+
+  Future<void> _submit() async {
+    final form = _formKey.currentState;
+    if (form == null) return;
+    if (!form.validate()) return;
+    if (!await _validateRequiredFields()) return;
+    final routeStations = _routeResult?.calculatedRoute ?? [];
+    final startVal = _useManualMileage
+        ? _startController.text.trim()
+        : (routeStations.isNotEmpty ? routeStations.first : '');
+    final endVal = _useManualMileage
+        ? _endController.text.trim()
+        : (routeStations.isNotEmpty ? routeStations.last : '');
+    final mileageVal = _useManualMileage
+        ? double.tryParse(_mileageController.text.trim()) ?? 0
+        : (_routeResult?.distance ?? 0);
+    final tractionPayload = _buildTractionPayload();
+    final snapshot = _buildSubmissionSnapshot(
+      routeStations: routeStations,
+      startVal: startVal,
+      endVal: endVal,
+      mileageVal: mileageVal,
+      tractionPayload: tractionPayload,
+    );
+    if (_lastSubmittedSnapshot != null &&
+        _snapshotEquality.equals(_lastSubmittedSnapshot, snapshot)) {
+      final confirmed = await _confirmDuplicateSubmission();
+      if (!confirmed) return;
+    }
+    if (!mounted) return;
+    final api = context.read<ApiService>();
+    final dataService = context.read<DataService>();
+    final messenger = ScaffoldMessenger.maybeOf(context);
+    _setState(() => _submitting = true);
+    final isEditingExisting = _isEditing && widget.editLegId != null;
+
+    try {
+      if (_useManualMileage) {
+        final body = {
+          if (isEditingExisting) "leg_id": widget.editLegId,
+          "leg_trip": _selectedTripId,
+          "leg_start": startVal,
+          "leg_end": endVal,
+          "leg_begin_time": _legDateTime.toIso8601String(),
+          "leg_network": _networkController.text.trim(),
+          "leg_distance": mileageVal,
+          "isKilometers": false,
+          "leg_notes": _notesController.text.trim(),
+          "leg_headcode": _headcodeController.text.trim(),
+          "locos": tractionPayload,
+        };
+        if (isEditingExisting) {
+          await api.put('/update', body);
+        } else {
+          await api.post('/add/manual', body);
+        }
+      } else {
+        final body = {
+          if (isEditingExisting) "leg_id": widget.editLegId,
+          "leg_trip": _selectedTripId,
+          "leg_begin_time": _legDateTime.toIso8601String(),
+          "leg_route": routeStations,
+          "leg_notes": _notesController.text.trim(),
+          "leg_headcode": _headcodeController.text.trim(),
+          "leg_network": _networkController.text.trim(),
+          "locos": tractionPayload,
+        };
+        if (isEditingExisting) {
+          await api.put('/update', body);
+        } else {
+          await api.post('/add', body);
+        }
+      }
+      if (!mounted) return;
+      dataService.refreshLegs();
+      if (!mounted) return;
+      messenger?.showSnackBar(
+        SnackBar(
+          content: Text(isEditingExisting ? 'Entry updated' : 'Entry submitted'),
+        ),
+      );
+      _lastSubmittedSnapshot = snapshot;
+      _activeDraftId = null;
+    } catch (e) {
+      if (!mounted) return;
+      messenger?.showSnackBar(
+        SnackBar(content: Text('Failed to submit: $e')),
+      );
+    } finally {
+      if (mounted) _setState(() => _submitting = false);
+    }
+  }
+
+  Map<String, dynamic> _buildSubmissionSnapshot({
+    required List<String> routeStations,
+    required String startVal,
+    required String endVal,
+    required double mileageVal,
+    required List<Map<String, dynamic>> tractionPayload,
+  }) {
+    return {
+      "legId": widget.editLegId,
+      "useManualMileage": _useManualMileage,
+      "tripId": _selectedTripId,
+      "legDateTime": _legDateTime.toIso8601String(),
+      "start": startVal,
+      "end": endVal,
+      "routeStations": routeStations,
+      "mileage": mileageVal,
+      "network": _networkController.text.trim(),
+      "notes": _notesController.text.trim(),
+      "headcode": _headcodeController.text.trim(),
+      "locos": tractionPayload,
+      "routeResult": _routeResult == null
+          ? null
+          : {
+              "input_route": _routeResult!.inputRoute,
+              "calculated_route": _routeResult!.calculatedRoute,
+              "costs": _routeResult!.costs,
+              "distance": _routeResult!.distance,
+            },
+    };
+  }
+
+  Future<bool> _confirmDuplicateSubmission() async {
+    if (!mounted) return false;
+    final result = await showDialog<bool>(
+      context: context,
+      builder: (_) => AlertDialog(
+        title: const Text('Duplicate entry?'),
+        content: const Text('Entry already added, are you sure?'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(false),
+            child: const Text('Cancel'),
+          ),
+          ElevatedButton(
+            onPressed: () => Navigator.of(context).pop(true),
+            child: const Text('Submit anyway'),
+          ),
+        ],
+      ),
+    );
+    return result ?? false;
+  }
+
+  Future<void> _resetFormState({bool clearDraft = false}) async {
+    _formKey.currentState?.reset();
+    _startController.clear();
+    _endController.clear();
+    _headcodeController.clear();
+    _notesController.clear();
+    _mileageController.clear();
+    _networkController.clear();
+    final now = DateTime.now();
+    _setState(() {
+      _selectedDate = now;
+      _selectedTime = TimeOfDay.fromDateTime(now);
+      _useManualMileage = false;
+      _routeResult = null;
+      _tractionItems
+        ..clear()
+        ..add(_TractionItem.marker());
+      _selectedTripId = null;
+      _submitting = false;
+      _activeDraftId = null;
+      _savingDraft = false;
+      _loadedDraftSnapshot = null;
+    });
+    if (clearDraft) {
+      await _clearDraft();
+    }
+  }
+}

lib/components/pages/new_entry/new_entry_traction_logic.dart

@@ -0,0 +1,147 @@
+part of 'new_entry.dart';
+
+extension _NewEntryTractionLogic on _NewEntryPageState {
+  Future<void> _openTractionPicker() async {
+    final selectedKeys = _tractionItems
+        .where((e) => !e.isMarker && e.loco != null)
+        .map((e) => '${e.loco!.locoClass}-${e.loco!.number}')
+        .toSet();
+    await Navigator.of(context).push(
+      MaterialPageRoute(
+        builder: (_) => TractionPage(
+          selectionMode: true,
+          selectedKeys: selectedKeys,
+          onSelect: (loco) {
+            final markerIndex = _tractionItems.indexWhere(
+              (element) => element.isMarker,
+            );
+            final key = '${loco.locoClass}-${loco.number}';
+            _setState(() {
+              final existingIndex = _tractionItems.indexWhere(
+                (e) =>
+                    !e.isMarker &&
+                    e.loco != null &&
+                    '${e.loco!.locoClass}-${e.loco!.number}' == key,
+              );
+              if (existingIndex != -1) {
+                _tractionItems.removeAt(existingIndex);
+              } else {
+                _tractionItems.insert(
+                  markerIndex,
+                  _TractionItem(loco: loco, powering: true),
+                );
+              }
+            });
+            _saveDraft();
+          },
+        ),
+      ),
+    );
+  }
+
+  List<_TractionItem> _buildTractionFromApi(
+    List<Map<String, dynamic>> locoData,
+  ) {
+    if (locoData.isEmpty) return [_TractionItem.marker()];
+    final sorted = [...locoData]
+      ..sort((a, b) {
+        return _allocPos(b).compareTo(_allocPos(a));
+      });
+    final leading = sorted.where((e) => _allocPos(e) >= 0);
+    final trailing = sorted.where((e) => _allocPos(e) < 0);
+    return [
+      ...leading.map(_mapLocoToTractionItem),
+      _TractionItem.marker(),
+      ...trailing.map(_mapLocoToTractionItem),
+    ];
+  }
+
+  int _allocPos(Map<String, dynamic> loco) =>
+      (loco['alloc_pos'] as num?)?.toInt() ?? 0;
+
+  _TractionItem _mapLocoToTractionItem(Map<String, dynamic> loco) {
+    final poweringRaw = loco['alloc_powering'];
+    final powering = poweringRaw == true || poweringRaw == 1;
+    return _TractionItem(loco: LocoSummary.fromJson(loco), powering: powering);
+  }
+
+  List<Map<String, dynamic>> _buildTractionPayload() {
+    final markerIndex = _tractionItems.indexWhere(
+      (element) => element.isMarker,
+    );
+    final payload = <Map<String, dynamic>>[];
+    for (var i = 0; i < _tractionItems.length; i++) {
+      final item = _tractionItems[i];
+      if (item.isMarker || item.loco == null) continue;
+      int allocPos;
+      if (i > markerIndex) {
+        allocPos = -(i - markerIndex);
+      } else {
+        allocPos = (markerIndex - 1) - i;
+      }
+      payload.add({
+        "loco_type": item.loco!.type,
+        "loco_number": item.loco!.number,
+        "alloc_pos": allocPos,
+        "alloc_powering": item.powering ? 1 : 0,
+      });
+    }
+    return payload;
+  }
+
+  List<Map<String, dynamic>> _serializeTractionItems() {
+    return _tractionItems
+        .map(
+          (item) => {
+            "isMarker": item.isMarker,
+            "powering": item.powering,
+            "loco": item.loco == null
+                ? null
+                : {
+                    "id": item.loco!.id,
+                    "type": item.loco!.type,
+                    "number": item.loco!.number,
+                    "class": item.loco!.locoClass,
+                    "name": item.loco!.name,
+                    "operator": item.loco!.operator,
+                    "notes": item.loco!.notes,
+                    "evn": item.loco!.evn,
+                  },
+          },
+        )
+        .toList();
+  }
+
+  void _restoreTractionItems(List<Map<String, dynamic>> items) {
+    final restored = <_TractionItem>[];
+    for (final item in items) {
+      final locoData = item['loco'] as Map<String, dynamic>?;
+      LocoSummary? loco;
+      if (locoData != null) {
+        loco = LocoSummary(
+          locoId: locoData['id'] ?? 0,
+          locoType: locoData['type'] ?? '',
+          locoNumber: locoData['number'] ?? '',
+          locoName: locoData['name'] ?? '',
+          locoClass: locoData['class'] ?? '',
+          locoOperator: locoData['operator'] ?? '',
+          locoNotes: locoData['notes'],
+          locoEvn: locoData['evn'],
+        );
+      }
+      restored.add(
+        _TractionItem(
+          loco: loco,
+          powering: item['powering'] ?? true,
+          isMarker: item['isMarker'] ?? false,
+        ),
+      );
+    }
+    if (restored.where((e) => e.isMarker).isEmpty) {
+      restored.insert(0, _TractionItem.marker());
+    }
+    _tractionItems
+      ..clear()
+      ..addAll(restored);
+  }
+}

lib/components/pages/new_traction.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
-import 'package:mileograph_flutter/services/dataService.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
 
 enum _SpeedUnit { kph, mph }
 

lib/components/pages/traction.dart

@@ -1,907 +1,2 @@
-import 'package:flutter/material.dart';
+export 'traction/traction.dart';
-import 'package:go_router/go_router.dart';
-import 'package:mileograph_flutter/objects/objects.dart';
-import 'package:mileograph_flutter/services/dataService.dart';
-import 'package:provider/provider.dart';
 
-class TractionPage extends StatefulWidget {
-  const TractionPage({
-    super.key,
-    this.selectionMode = false,
-    this.onSelect,
-    this.selectedKeys = const {},
-  });
-
-  final bool selectionMode;
-  final ValueChanged<LocoSummary>? onSelect;
-  final Set<String> selectedKeys;
-
-  @override
-  State<TractionPage> createState() => _TractionPageState();
-}
-
-class _TractionPageState extends State<TractionPage> {
-  final _classController = TextEditingController();
-  final _classFocusNode = FocusNode();
-  final _numberController = TextEditingController();
-  final _nameController = TextEditingController();
-  bool _mileageFirst = true;
-  bool _initialised = false;
-  bool _showAdvancedFilters = false;
-  String? _selectedClass;
-  late Set<String> _selectedKeys;
-
-  final Map<String, TextEditingController> _dynamicControllers = {};
-  final Map<String, String?> _enumSelections = {};
-
-  @override
-  void initState() {
-    super.initState();
-    _classController.addListener(_onClassTextChanged);
-  }
-
-  @override
-  void didChangeDependencies() {
-    super.didChangeDependencies();
-    if (!_initialised) {
-      _initialised = true;
-      _selectedKeys = {...widget.selectedKeys};
-      WidgetsBinding.instance.addPostFrameCallback((_) {
-        final data = context.read<DataService>();
-        data.fetchClassList();
-        data.fetchEventFields();
-        _refreshTraction();
-      });
-    }
-  }
-
-  @override
-  void dispose() {
-    _classController.removeListener(_onClassTextChanged);
-    _classController.dispose();
-    _classFocusNode.dispose();
-    _numberController.dispose();
-    _nameController.dispose();
-    for (final controller in _dynamicControllers.values) {
-      controller.dispose();
-    }
-    super.dispose();
-  }
-
-  bool get _hasFilters {
-    final dynamicFieldsUsed =
-        _dynamicControllers.values.any(
-          (controller) => controller.text.trim().isNotEmpty,
-        ) ||
-        _enumSelections.values.any(
-          (value) => (value ?? '').toString().trim().isNotEmpty,
-        );
-
-    return [
-          _selectedClass,
-          _classController.text,
-          _numberController.text,
-          _nameController.text,
-        ].any((value) => (value ?? '').toString().trim().isNotEmpty) ||
-        dynamicFieldsUsed;
-  }
-
-  Future<void> _refreshTraction({bool append = false}) async {
-    final data = context.read<DataService>();
-    final filters = <String, dynamic>{};
-    final name = _nameController.text.trim();
-    if (name.isNotEmpty) filters['name'] = name;
-    _dynamicControllers.forEach((key, controller) {
-      final value = controller.text.trim();
-      if (value.isNotEmpty) filters[key] = value;
-    });
-    _enumSelections.forEach((key, value) {
-      if (value != null && value.toString().trim().isNotEmpty) {
-        filters[key] = value;
-      }
-    });
-    final hadOnly = !_hasFilters;
-    await data.fetchTraction(
-      hadOnly: hadOnly,
-      locoClass: _selectedClass ?? _classController.text.trim(),
-      locoNumber: _numberController.text.trim(),
-      offset: append ? data.traction.length : 0,
-      append: append,
-      filters: filters,
-      mileageFirst: _mileageFirst,
-    );
-  }
-
-  void _clearFilters() {
-    for (final controller in [
-      _classController,
-      _numberController,
-      _nameController,
-    ]) {
-      controller.clear();
-    }
-    for (final controller in _dynamicControllers.values) {
-      controller.clear();
-    }
-    _enumSelections.clear();
-    setState(() {
-      _selectedClass = null;
-      _mileageFirst = true;
-    });
-    _refreshTraction();
-  }
-
-  void _onClassTextChanged() {
-    if (_selectedClass != null &&
-        _classController.text.trim() != (_selectedClass ?? '')) {
-      setState(() {
-        _selectedClass = null;
-      });
-    }
-  }
-
-  List<EventField> _activeEventFields(List<EventField> fields) {
-    return fields
-        .where(
-          (field) => ![
-            'class',
-            'number',
-            'name',
-            'build date',
-            'build_date',
-          ].contains(field.name.toLowerCase()),
-        )
-        .toList();
-  }
-
-  void _ensureControllersForFields(List<EventField> fields) {
-    for (final field in fields) {
-      if (field.enumValues != null) {
-        _enumSelections.putIfAbsent(field.name, () => null);
-      } else {
-        _dynamicControllers.putIfAbsent(
-          field.name,
-          () => TextEditingController(),
-        );
-      }
-    }
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final data = context.watch<DataService>();
-    final traction = data.traction;
-    final classOptions = data.locoClasses;
-    final isMobile = MediaQuery.of(context).size.width < 700;
-    _ensureControllersForFields(data.eventFields);
-    final extraFields = _activeEventFields(data.eventFields);
-
-    final listView = RefreshIndicator(
-      onRefresh: _refreshTraction,
-      child: ListView(
-        padding: const EdgeInsets.all(16),
-        physics: const AlwaysScrollableScrollPhysics(),
-        children: [
-          Row(
-            crossAxisAlignment: CrossAxisAlignment.start,
-            children: [
-              Expanded(
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    Text(
-                      'Fleet',
-                      style: Theme.of(context).textTheme.labelMedium,
-                    ),
-                    const SizedBox(height: 2),
-                    Text(
-                      'Traction',
-                      style: Theme.of(context).textTheme.headlineSmall,
-                    ),
-                  ],
-                ),
-              ),
-              Row(
-                mainAxisSize: MainAxisSize.min,
-                children: [
-                  IconButton(
-                    tooltip: 'Refresh',
-                    onPressed: _refreshTraction,
-                    icon: const Icon(Icons.refresh),
-                  ),
-                  const SizedBox(width: 8),
-                  FilledButton.icon(
-                    onPressed: () async {
-                      final createdClass = await context.push<String>(
-                        '/traction/new',
-                      );
-                      if (createdClass != null && createdClass.isNotEmpty) {
-                        _classController.text = createdClass;
-                        _selectedClass = createdClass;
-                        if (mounted) {
-                          _refreshTraction();
-                        }
-                      } else if (mounted && createdClass == '') {
-                        _refreshTraction();
-                      }
-                    },
-                    icon: const Icon(Icons.add),
-                    label: const Text('New Traction'),
-                  ),
-                ],
-              ),
-            ],
-          ),
-          const SizedBox(height: 12),
-          Card(
-            child: Padding(
-              padding: const EdgeInsets.all(12),
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.stretch,
-                children: [
-                  Row(
-                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                    children: [
-                      Text(
-                        'Filters',
-                        style: Theme.of(context).textTheme.titleMedium,
-                      ),
-                      TextButton(
-                        onPressed: _clearFilters,
-                        child: const Text('Clear'),
-                      ),
-                    ],
-                  ),
-                  const SizedBox(height: 8),
-                  Wrap(
-                    spacing: 12,
-                    runSpacing: 12,
-                    children: [
-                      SizedBox(
-                        width: isMobile ? double.infinity : 240,
-                        child: RawAutocomplete<String>(
-                          textEditingController: _classController,
-                          focusNode: _classFocusNode,
-                          optionsBuilder: (TextEditingValue textEditingValue) {
-                            final query = textEditingValue.text.toLowerCase();
-                            if (query.isEmpty) {
-                              return classOptions;
-                            }
-                            return classOptions.where(
-                              (c) => c.toLowerCase().contains(query),
-                            );
-                          },
-                          fieldViewBuilder:
-                              (
-                                context,
-                                controller,
-                                focusNode,
-                                onFieldSubmitted,
-                              ) {
-                                return TextField(
-                                  controller: controller,
-                                  focusNode: focusNode,
-                                  decoration: const InputDecoration(
-                                    labelText: 'Class',
-                                    border: OutlineInputBorder(),
-                                  ),
-                                  onSubmitted: (_) => _refreshTraction(),
-                                );
-                              },
-                          optionsViewBuilder: (context, onSelected, options) {
-                            final optionList = options.toList();
-                            if (optionList.isEmpty) {
-                              return const SizedBox.shrink();
-                            }
-                            final maxWidth = isMobile
-                                ? MediaQuery.of(context).size.width - 64
-                                : 240.0;
-                            return Align(
-                              alignment: Alignment.topLeft,
-                              child: Material(
-                                elevation: 4,
-                                child: ConstrainedBox(
-                                  constraints: BoxConstraints(
-                                    maxWidth: maxWidth,
-                                    maxHeight: 240,
-                                  ),
-                                  child: ListView.builder(
-                                    padding: EdgeInsets.zero,
-                                    shrinkWrap: true,
-                                    itemCount: optionList.length,
-                                    itemBuilder: (context, index) {
-                                      final option = optionList[index];
-                                      return ListTile(
-                                        title: Text(option),
-                                        onTap: () => onSelected(option),
-                                      );
-                                    },
-                                  ),
-                                ),
-                              ),
-                            );
-                          },
-                          onSelected: (String selection) {
-                            setState(() {
-                              _selectedClass = selection;
-                              _classController.text = selection;
-                            });
-                            _refreshTraction();
-                          },
-                        ),
-                      ),
-                      SizedBox(
-                        width: isMobile ? double.infinity : 220,
-                        child: TextField(
-                          controller: _numberController,
-                          decoration: const InputDecoration(
-                            labelText: 'Number',
-                            border: OutlineInputBorder(),
-                          ),
-                          onSubmitted: (_) => _refreshTraction(),
-                        ),
-                      ),
-                      SizedBox(
-                        width: isMobile ? double.infinity : 220,
-                        child: TextField(
-                          controller: _nameController,
-                          decoration: const InputDecoration(
-                            labelText: 'Name',
-                            border: OutlineInputBorder(),
-                          ),
-                          onSubmitted: (_) => _refreshTraction(),
-                        ),
-                      ),
-                      FilterChip(
-                        label: Text(
-                          _mileageFirst ? 'Mileage first' : 'Number order',
-                        ),
-                        selected: _mileageFirst,
-                        onSelected: (v) {
-                          setState(() => _mileageFirst = v);
-                          _refreshTraction();
-                        },
-                      ),
-                      TextButton.icon(
-                        onPressed: () => setState(
-                          () => _showAdvancedFilters = !_showAdvancedFilters,
-                        ),
-                        icon: Icon(
-                          _showAdvancedFilters
-                              ? Icons.expand_less
-                              : Icons.expand_more,
-                        ),
-                        label: Text(
-                          _showAdvancedFilters
-                              ? 'Hide filters'
-                              : 'More filters',
-                        ),
-                      ),
-                      ElevatedButton.icon(
-                        onPressed: _refreshTraction,
-                        icon: const Icon(Icons.search),
-                        label: const Text('Search'),
-                      ),
-                    ],
-                  ),
-                  AnimatedCrossFade(
-                    crossFadeState: _showAdvancedFilters
-                        ? CrossFadeState.showFirst
-                        : CrossFadeState.showSecond,
-                    duration: const Duration(milliseconds: 200),
-                    firstChild: Padding(
-                      padding: const EdgeInsets.only(top: 12.0),
-                      child: data.isEventFieldsLoading
-                          ? const Center(
-                              child: Padding(
-                                padding: EdgeInsets.all(8.0),
-                                child: CircularProgressIndicator(
-                                  strokeWidth: 2,
-                                ),
-                              ),
-                            )
-                          : extraFields.isEmpty
-                          ? const Text('No extra filters available right now.')
-                          : Wrap(
-                              spacing: 12,
-                              runSpacing: 12,
-                              children: extraFields
-                                  .map(
-                                    (field) => _buildFilterInput(
-                                      context,
-                                      field,
-                                      isMobile,
-                                    ),
-                                  )
-                                  .toList(),
-                            ),
-                    ),
-                    secondChild: const SizedBox.shrink(),
-                  ),
-                ],
-              ),
-            ),
-          ),
-          const SizedBox(height: 12),
-          Stack(
-            children: [
-              if (data.isTractionLoading && traction.isEmpty)
-                const Padding(
-                  padding: EdgeInsets.symmetric(vertical: 32.0),
-                  child: Center(child: CircularProgressIndicator()),
-                )
-              else if (traction.isEmpty)
-                Card(
-                  child: Padding(
-                    padding: const EdgeInsets.all(16.0),
-                    child: Column(
-                      crossAxisAlignment: CrossAxisAlignment.start,
-                      children: [
-                        Text(
-                          'No traction found',
-                          style: Theme.of(context).textTheme.titleMedium?.copyWith(
-                            fontWeight: FontWeight.w700,
-                          ),
-                        ),
-                        const SizedBox(height: 8),
-                        const Text('Try relaxing the filters or sync again.'),
-                      ],
-                    ),
-                  ),
-                )
-              else
-                Column(
-                  children: [
-                    ...traction.map((loco) => _buildTractionCard(context, loco)),
-                    if (data.tractionHasMore || data.isTractionLoading)
-                      Padding(
-                        padding: const EdgeInsets.only(top: 8.0),
-                        child: OutlinedButton.icon(
-                          onPressed: data.isTractionLoading
-                              ? null
-                              : () => _refreshTraction(append: true),
-                          icon: data.isTractionLoading
-                              ? const SizedBox(
-                                  height: 14,
-                                  width: 14,
-                                  child: CircularProgressIndicator(strokeWidth: 2),
-                                )
-                              : const Icon(Icons.expand_more),
-                          label: Text(
-                            data.isTractionLoading ? 'Loading...' : 'Load more',
-                          ),
-                        ),
-                      ),
-                  ],
-                ),
-              if (data.isTractionLoading)
-                Positioned.fill(
-                  child: IgnorePointer(
-                    child: Container(
-                      color: Theme.of(context).colorScheme.surface.withOpacity(0.6),
-                      child: const Center(child: CircularProgressIndicator()),
-                    ),
-                  ),
-                ),
-            ],
-          ),
-        ],
-      ),
-    );
-
-    if (widget.selectionMode) {
-      return Scaffold(
-        appBar: AppBar(
-          leadingWidth: 140,
-          leading: Padding(
-            padding: const EdgeInsets.only(left: 8.0),
-            child: TextButton.icon(
-              onPressed: () => Navigator.of(context).pop(),
-              icon: const Icon(Icons.arrow_back),
-              label: const Text('Back'),
-              style: TextButton.styleFrom(
-                padding: const EdgeInsets.symmetric(
-                  horizontal: 12,
-                  vertical: 10,
-                ),
-                foregroundColor: Theme.of(context).colorScheme.onSurface,
-              ),
-            ),
-          ),
-          title: null,
-        ),
-        body: listView,
-      );
-    }
-
-    return listView;
-  }
-
-  Widget _buildTractionCard(BuildContext context, LocoSummary loco) {
-    final keyVal = '${loco.locoClass}-${loco.number}';
-    final isSelected = _selectedKeys.contains(keyVal);
-    final status = loco.status ?? 'Unknown';
-    final operatorName = loco.operator ?? '';
-    final domain = loco.domain ?? '';
-    final hasMileageOrTrips = _hasMileageOrTrips(loco);
-    final statusColors = _statusChipColors(context, status);
-    return Card(
-      child: Padding(
-        padding: const EdgeInsets.all(12.0),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            Row(
-              mainAxisAlignment: MainAxisAlignment.spaceBetween,
-              children: [
-                Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    Row(
-                      children: [
-                        Text(
-                          loco.number,
-                          style: Theme.of(context).textTheme.headlineSmall
-                              ?.copyWith(fontWeight: FontWeight.w800),
-                        ),
-                        if (hasMileageOrTrips)
-                          Padding(
-                            padding: const EdgeInsets.only(left: 6.0),
-                            child: Icon(
-                              Icons.check_circle,
-                              size: 18,
-                              color: Colors.green.shade600,
-                            ),
-                          ),
-                      ],
-                    ),
-                    Text(
-                      loco.locoClass,
-                      style: Theme.of(context).textTheme.labelMedium,
-                    ),
-                    if ((loco.name ?? '').isNotEmpty)
-                      Padding(
-                        padding: const EdgeInsets.only(top: 2.0),
-                        child: Text(
-                          loco.name ?? '',
-                          style: Theme.of(context).textTheme.bodyMedium
-                              ?.copyWith(fontStyle: FontStyle.italic),
-                        ),
-                      ),
-                  ],
-                ),
-                Chip(
-                  label: Text(status),
-                  backgroundColor: statusColors.$1,
-                  labelStyle: TextStyle(color: statusColors.$2),
-                ),
-              ],
-            ),
-            const SizedBox(height: 8),
-            Row(
-              children: [
-                TextButton.icon(
-                  onPressed: () => _showLocoInfo(loco),
-                  icon: const Icon(Icons.info_outline),
-                  label: const Text('Details'),
-                ),
-                const SizedBox(width: 8),
-                TextButton.icon(
-                  onPressed: () => _openTimeline(loco),
-                  icon: const Icon(Icons.timeline),
-                  label: const Text('Timeline'),
-                ),
-                const Spacer(),
-                if (widget.selectionMode)
-                  TextButton.icon(
-                    onPressed: () {
-                      if (widget.onSelect != null) {
-                        widget.onSelect!(loco);
-                      }
-                      setState(() {
-                        if (isSelected) {
-                          _selectedKeys.remove(keyVal);
-                        } else {
-                          _selectedKeys.add(keyVal);
-                        }
-                      });
-                    },
-                    icon: Icon(
-                      isSelected
-                          ? Icons.remove_circle_outline
-                          : Icons.add_circle_outline,
-                    ),
-                    label: Text(isSelected ? 'Remove' : 'Add to entry'),
-                  ),
-              ],
-            ),
-            Wrap(
-              spacing: 8,
-              runSpacing: 4,
-              children: [
-                _statPill(
-                  context,
-                  label: 'Miles',
-                  value: _formatNumber(loco.mileage),
-                ),
-                _statPill(
-                  context,
-                  label: 'Trips',
-                  value: (loco.trips ?? loco.journeys ?? 0).toString(),
-                ),
-                if (operatorName.isNotEmpty)
-                  _statPill(context, label: 'Operator', value: operatorName),
-                if (domain.isNotEmpty)
-                  _statPill(context, label: 'Domain', value: domain),
-              ],
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _statPill(
-    BuildContext context, {
-    required String label,
-    required String value,
-  }) {
-    return Container(
-      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
-      decoration: BoxDecoration(
-        color: Theme.of(context).colorScheme.surfaceContainerHighest,
-        borderRadius: BorderRadius.circular(10),
-      ),
-      child: Row(
-        mainAxisSize: MainAxisSize.min,
-        children: [
-          Text('$label: ', style: Theme.of(context).textTheme.labelSmall),
-          Text(
-            value,
-            style: Theme.of(
-              context,
-            ).textTheme.labelSmall?.copyWith(fontWeight: FontWeight.w700),
-          ),
-        ],
-      ),
-    );
-  }
-
-  (Color, Color) _statusChipColors(BuildContext context, String status) {
-    final scheme = Theme.of(context).colorScheme;
-    final isDark = scheme.brightness == Brightness.dark;
-    Color blend(
-      Color base, {
-      double bgOpacity = 0.18,
-      double fgOpacity = 0.82,
-    }) {
-      final bg = Color.alphaBlend(
-        base.withOpacity(isDark ? bgOpacity + 0.07 : bgOpacity),
-        scheme.surface,
-      );
-      final fg = Color.alphaBlend(
-        base.withOpacity(isDark ? fgOpacity : fgOpacity * 0.8),
-        scheme.onSurface,
-      );
-      return Color.lerp(bg, fg, 0.0) ?? bg;
-    }
-
-    Color background;
-    Color foreground;
-    final key = status.toLowerCase();
-
-    if (key.contains('scrap')) {
-      background = blend(Colors.red);
-      foreground = Colors.red.shade200.withOpacity(isDark ? 0.85 : 0.9);
-    } else if (key.contains('active')) {
-      background = blend(scheme.primary);
-      foreground = scheme.primary.withOpacity(isDark ? 0.9 : 0.8);
-    } else if (key.contains('withdrawn')) {
-      background = blend(Colors.amber);
-      foreground = Colors.amber.shade800.withOpacity(isDark ? 0.9 : 0.8);
-    } else if (key.contains('stored') || key.contains('unknown')) {
-      background = blend(Colors.grey);
-      foreground = Colors.grey.shade700.withOpacity(isDark ? 0.85 : 0.75);
-    } else {
-      background = scheme.surfaceContainerHighest;
-      foreground = scheme.onSurface;
-    }
-    return (background, foreground);
-  }
-
-  void _openTimeline(LocoSummary loco) {
-    final label = '${loco.locoClass} ${loco.number}'.trim();
-    context.push(
-      '/traction/${loco.id}/timeline',
-      extra: {'label': label},
-    );
-  }
-
-  Future<void> _showLocoInfo(LocoSummary loco) async {
-    await showModalBottomSheet(
-      context: context,
-      isScrollControlled: true,
-      builder: (ctx) {
-        return DraggableScrollableSheet(
-          expand: false,
-          maxChildSize: 0.9,
-          initialChildSize: 0.65,
-          builder: (_, controller) {
-            return Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                children: [
-                  Row(
-                    children: [
-                      IconButton(
-                        icon: const Icon(Icons.close),
-                        onPressed: () => Navigator.of(ctx).pop(),
-                      ),
-                      const SizedBox(width: 8),
-                      Column(
-                        crossAxisAlignment: CrossAxisAlignment.start,
-                        children: [
-                          Row(
-                            children: [
-                              Text(
-                                loco.number,
-                                style: Theme.of(context).textTheme.titleLarge
-                                    ?.copyWith(fontWeight: FontWeight.w800),
-                              ),
-                              if (_hasMileageOrTrips(loco))
-                                Padding(
-                                  padding: const EdgeInsets.only(left: 6.0),
-                                  child: Icon(
-                                    Icons.check_circle,
-                                    size: 18,
-                                    color: Colors.green.shade600,
-                                  ),
-                                ),
-                            ],
-                          ),
-                          Text(
-                            loco.locoClass,
-                            style: Theme.of(context).textTheme.labelMedium,
-                          ),
-                        ],
-                      ),
-                    ],
-                  ),
-                  if ((loco.name ?? '').isNotEmpty)
-                    Padding(
-                      padding: const EdgeInsets.only(left: 52.0, bottom: 12),
-                      child: Text(
-                        loco.name ?? '',
-                        style: Theme.of(context).textTheme.bodyMedium,
-                      ),
-                    ),
-                  const SizedBox(height: 4),
-                  Expanded(
-                    child: ListView(
-                      controller: controller,
-                      children: [
-                        _detailRow('Status', loco.status ?? 'Unknown'),
-                        _detailRow('Operator', loco.operator ?? ''),
-                        _detailRow('Domain', loco.domain ?? ''),
-                        _detailRow('Owner', loco.owner ?? ''),
-                        _detailRow('Livery', loco.livery ?? ''),
-                        _detailRow('Location', loco.location ?? ''),
-                        _detailRow('Mileage', _formatNumber(loco.mileage ?? 0)),
-                        _detailRow(
-                          'Trips',
-                          (loco.trips ?? loco.journeys ?? 0).toString(),
-                        ),
-                        _detailRow('EVN', loco.evn ?? ''),
-                        if (loco.notes != null && loco.notes!.isNotEmpty)
-                          _detailRow('Notes', loco.notes!),
-                      ],
-                    ),
-                  ),
-                ],
-              ),
-            );
-          },
-        );
-      },
-    );
-  }
-
-  Widget _detailRow(String label, String value) {
-    if (value.isEmpty) return const SizedBox.shrink();
-    return Padding(
-      padding: const EdgeInsets.symmetric(vertical: 6.0),
-      child: Row(
-        children: [
-          SizedBox(
-            width: 110,
-            child: Text(
-              label,
-              style: Theme.of(
-                context,
-              ).textTheme.labelMedium?.copyWith(fontWeight: FontWeight.w600),
-            ),
-          ),
-          Expanded(
-            child: Text(value, style: Theme.of(context).textTheme.bodyMedium),
-          ),
-        ],
-      ),
-    );
-  }
-
-  String _formatNumber(double? value) {
-    if (value == null) return '0';
-    return value.toStringAsFixed(1);
-  }
-
-  bool _hasMileageOrTrips(LocoSummary loco) {
-    final mileage = loco.mileage ?? 0;
-    final trips = loco.trips ?? loco.journeys ?? 0;
-    return mileage > 0 || trips > 0;
-  }
-
-  Widget _buildFilterInput(
-    BuildContext context,
-    EventField field,
-    bool isMobile,
-  ) {
-    final width = isMobile ? double.infinity : 220.0;
-    if (field.enumValues != null && field.enumValues!.isNotEmpty) {
-      final options = field.enumValues!
-          .map((e) => e.toString())
-          .toSet()
-          .toList();
-      final currentValue = _enumSelections[field.name];
-      final safeValue = options.contains(currentValue) ? currentValue : null;
-      return SizedBox(
-        width: width,
-        child: DropdownButtonFormField<String?>(
-          value: safeValue,
-          decoration: InputDecoration(
-            labelText: field.display,
-            border: const OutlineInputBorder(),
-          ),
-          items: [
-            const DropdownMenuItem(value: null, child: Text('Any')),
-            ...options.map(
-              (value) => DropdownMenuItem(value: value, child: Text(value)),
-            ),
-          ],
-          onChanged: (val) {
-            setState(() {
-              _enumSelections[field.name] = val;
-            });
-            _refreshTraction();
-          },
-        ),
-      );
-    }
-
-    final controller =
-        _dynamicControllers[field.name] ?? TextEditingController();
-    _dynamicControllers[field.name] = controller;
-    TextInputType? inputType;
-    if (field.type != null) {
-      final type = field.type!.toLowerCase();
-      if (type.contains('int') ||
-          type.contains('num') ||
-          type.contains('double')) {
-        inputType = const TextInputType.numberWithOptions(decimal: true);
-      }
-    }
-
-    return SizedBox(
-      width: width,
-      child: TextField(
-        controller: controller,
-        keyboardType: inputType,
-        decoration: InputDecoration(
-          labelText: field.display,
-          border: const OutlineInputBorder(),
-        ),
-        onSubmitted: (_) => _refreshTraction(),
-      ),
-    );
-  }
-}

lib/components/pages/traction/traction.dart

@@ -0,0 +1,14 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:mileograph_flutter/components/traction/traction_card.dart';
+import 'package:mileograph_flutter/objects/objects.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+part 'traction_page.dart';
+part 'traction_persistence.dart';
+
+const String _kTractionSearchPrefsKey = 'traction_search_state_v1';

lib/components/pages/traction/traction_page.dart

@@ -0,0 +1,641 @@
+part of 'traction.dart';
+
+class TractionPage extends StatefulWidget {
+  const TractionPage({
+    super.key,
+    this.selectionMode = false,
+    this.onSelect,
+    this.selectedKeys = const {},
+  });
+
+  final bool selectionMode;
+  final ValueChanged<LocoSummary>? onSelect;
+  final Set<String> selectedKeys;
+
+  @override
+  State<TractionPage> createState() => _TractionPageState();
+}
+
+class _TractionPageState extends State<TractionPage> {
+  final _classController = TextEditingController();
+  final _classFocusNode = FocusNode();
+  final _numberController = TextEditingController();
+  final _nameController = TextEditingController();
+  bool _mileageFirst = true;
+  bool _initialised = false;
+  bool _showAdvancedFilters = false;
+  String? _selectedClass;
+  late Set<String> _selectedKeys;
+
+  final Map<String, TextEditingController> _dynamicControllers = {};
+  final Map<String, String?> _enumSelections = {};
+  bool _restoredFromPrefs = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _classController.addListener(_onClassTextChanged);
+  }
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    if (!_initialised) {
+      _initialised = true;
+      _selectedKeys = {...widget.selectedKeys};
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        _initialLoad();
+      });
+    }
+  }
+
+  Future<void> _initialLoad() async {
+    final data = context.read<DataService>();
+    await _restoreSearchState();
+    data.fetchClassList();
+    data.fetchEventFields();
+    await _refreshTraction();
+  }
+
+  @override
+  void dispose() {
+    _classController.removeListener(_onClassTextChanged);
+    _persistSearchState();
+    _classController.dispose();
+    _classFocusNode.dispose();
+    _numberController.dispose();
+    _nameController.dispose();
+    for (final controller in _dynamicControllers.values) {
+      controller.dispose();
+    }
+    super.dispose();
+  }
+
+  void _setState(VoidCallback fn) {
+    if (!mounted) return;
+    // ignore: invalid_use_of_protected_member
+    setState(fn);
+  }
+
+  bool get _hasFilters {
+    final dynamicFieldsUsed =
+        _dynamicControllers.values.any(
+          (controller) => controller.text.trim().isNotEmpty,
+        ) ||
+        _enumSelections.values.any(
+          (value) => (value ?? '').toString().trim().isNotEmpty,
+        );
+
+    return [
+          _selectedClass,
+          _classController.text,
+          _numberController.text,
+          _nameController.text,
+        ].any((value) => (value ?? '').toString().trim().isNotEmpty) ||
+        dynamicFieldsUsed;
+  }
+
+  Future<void> _refreshTraction({bool append = false}) async {
+    final data = context.read<DataService>();
+    final filters = <String, dynamic>{};
+    final name = _nameController.text.trim();
+    if (name.isNotEmpty) filters['name'] = name;
+    _dynamicControllers.forEach((key, controller) {
+      final value = controller.text.trim();
+      if (value.isNotEmpty) filters[key] = value;
+    });
+    _enumSelections.forEach((key, value) {
+      if (value != null && value.toString().trim().isNotEmpty) {
+        filters[key] = value;
+      }
+    });
+    final hadOnly = !_hasFilters;
+    await data.fetchTraction(
+      hadOnly: hadOnly,
+      locoClass: _selectedClass ?? _classController.text.trim(),
+      locoNumber: _numberController.text.trim(),
+      offset: append ? data.traction.length : 0,
+      append: append,
+      filters: filters,
+      mileageFirst: _mileageFirst,
+    );
+    await _persistSearchState();
+  }
+
+  void _clearFilters() {
+    for (final controller in [
+      _classController,
+      _numberController,
+      _nameController,
+    ]) {
+      controller.clear();
+    }
+    for (final controller in _dynamicControllers.values) {
+      controller.clear();
+    }
+    _enumSelections.clear();
+    setState(() {
+      _selectedClass = null;
+      _mileageFirst = true;
+    });
+    _refreshTraction();
+  }
+
+  void _onClassTextChanged() {
+    if (_selectedClass != null &&
+        _classController.text.trim() != (_selectedClass ?? '')) {
+      setState(() {
+        _selectedClass = null;
+      });
+    }
+  }
+
+  List<EventField> _activeEventFields(List<EventField> fields) {
+    return fields
+        .where(
+          (field) => ![
+            'class',
+            'number',
+            'name',
+            'build date',
+            'build_date',
+          ].contains(field.name.toLowerCase()),
+        )
+        .toList();
+  }
+
+  void _ensureControllersForFields(List<EventField> fields) {
+    for (final field in fields) {
+      if (field.enumValues != null) {
+        _enumSelections.putIfAbsent(field.name, () => null);
+      } else {
+        _dynamicControllers.putIfAbsent(
+          field.name,
+          () => TextEditingController(),
+        );
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final data = context.watch<DataService>();
+    final traction = data.traction;
+    final classOptions = data.locoClasses;
+    final isMobile = MediaQuery.of(context).size.width < 700;
+    _ensureControllersForFields(data.eventFields);
+    final extraFields = _activeEventFields(data.eventFields);
+
+    final listView = RefreshIndicator(
+      onRefresh: _refreshTraction,
+      child: ListView(
+        padding: const EdgeInsets.all(16),
+        physics: const AlwaysScrollableScrollPhysics(),
+        children: [
+          Row(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      'Fleet',
+                      style: Theme.of(context).textTheme.labelMedium,
+                    ),
+                    const SizedBox(height: 2),
+                    Text(
+                      'Traction',
+                      style: Theme.of(context).textTheme.headlineSmall,
+                    ),
+                  ],
+                ),
+              ),
+              Row(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  IconButton(
+                    tooltip: 'Refresh',
+                    onPressed: _refreshTraction,
+                    icon: const Icon(Icons.refresh),
+                  ),
+                  const SizedBox(width: 8),
+                  FilledButton.icon(
+                    onPressed: () async {
+                      final createdClass = await context.push<String>(
+                        '/traction/new',
+                      );
+                      if (createdClass != null && createdClass.isNotEmpty) {
+                        _classController.text = createdClass;
+                        _selectedClass = createdClass;
+                        if (mounted) {
+                          _refreshTraction();
+                        }
+                      } else if (mounted && createdClass == '') {
+                        _refreshTraction();
+                      }
+                    },
+                    icon: const Icon(Icons.add),
+                    label: const Text('New Traction'),
+                  ),
+                ],
+              ),
+            ],
+          ),
+          const SizedBox(height: 12),
+          Card(
+            child: Padding(
+              padding: const EdgeInsets.all(12),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.stretch,
+                children: [
+                  Row(
+                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                    children: [
+                      Text(
+                        'Filters',
+                        style: Theme.of(context).textTheme.titleMedium,
+                      ),
+                      TextButton(
+                        onPressed: _clearFilters,
+                        child: const Text('Clear'),
+                      ),
+                    ],
+                  ),
+                  const SizedBox(height: 8),
+                  Wrap(
+                    spacing: 12,
+                    runSpacing: 12,
+                    children: [
+                      SizedBox(
+                        width: isMobile ? double.infinity : 240,
+                        child: RawAutocomplete<String>(
+                          textEditingController: _classController,
+                          focusNode: _classFocusNode,
+                          optionsBuilder: (TextEditingValue textEditingValue) {
+                            final query = textEditingValue.text.toLowerCase();
+                            if (query.isEmpty) {
+                              return classOptions;
+                            }
+                            return classOptions.where(
+                              (c) => c.toLowerCase().contains(query),
+                            );
+                          },
+                          fieldViewBuilder:
+                              (
+                                context,
+                                controller,
+                                focusNode,
+                                onFieldSubmitted,
+                              ) {
+                                return TextField(
+                                  controller: controller,
+                                  focusNode: focusNode,
+                                  decoration: const InputDecoration(
+                                    labelText: 'Class',
+                                    border: OutlineInputBorder(),
+                                  ),
+                                  onSubmitted: (_) => _refreshTraction(),
+                                );
+                              },
+                          optionsViewBuilder: (context, onSelected, options) {
+                            final optionList = options.toList();
+                            if (optionList.isEmpty) {
+                              return const SizedBox.shrink();
+                            }
+                            final maxWidth = isMobile
+                                ? MediaQuery.of(context).size.width - 64
+                                : 240.0;
+                            return Align(
+                              alignment: Alignment.topLeft,
+                              child: Material(
+                                elevation: 4,
+                                child: ConstrainedBox(
+                                  constraints: BoxConstraints(
+                                    maxWidth: maxWidth,
+                                    maxHeight: 240,
+                                  ),
+                                  child: ListView.builder(
+                                    padding: EdgeInsets.zero,
+                                    shrinkWrap: true,
+                                    itemCount: optionList.length,
+                                    itemBuilder: (context, index) {
+                                      final option = optionList[index];
+                                      return ListTile(
+                                        title: Text(option),
+                                        onTap: () => onSelected(option),
+                                      );
+                                    },
+                                  ),
+                                ),
+                              ),
+                            );
+                          },
+                          onSelected: (String selection) {
+                            setState(() {
+                              _selectedClass = selection;
+                              _classController.text = selection;
+                            });
+                            _refreshTraction();
+                          },
+                        ),
+                      ),
+                      SizedBox(
+                        width: isMobile ? double.infinity : 220,
+                        child: TextField(
+                          controller: _numberController,
+                          decoration: const InputDecoration(
+                            labelText: 'Number',
+                            border: OutlineInputBorder(),
+                          ),
+                          onSubmitted: (_) => _refreshTraction(),
+                        ),
+                      ),
+                      SizedBox(
+                        width: isMobile ? double.infinity : 220,
+                        child: TextField(
+                          controller: _nameController,
+                          decoration: const InputDecoration(
+                            labelText: 'Name',
+                            border: OutlineInputBorder(),
+                          ),
+                          onSubmitted: (_) => _refreshTraction(),
+                        ),
+                      ),
+                      FilterChip(
+                        label: Text(
+                          _mileageFirst ? 'Mileage first' : 'Number order',
+                        ),
+                        selected: _mileageFirst,
+                        onSelected: (v) {
+                          setState(() => _mileageFirst = v);
+                          _refreshTraction();
+                        },
+                      ),
+                      TextButton.icon(
+                        onPressed: () => setState(
+                          () => _showAdvancedFilters = !_showAdvancedFilters,
+                        ),
+                        icon: Icon(
+                          _showAdvancedFilters
+                              ? Icons.expand_less
+                              : Icons.expand_more,
+                        ),
+                        label: Text(
+                          _showAdvancedFilters
+                              ? 'Hide filters'
+                              : 'More filters',
+                        ),
+                      ),
+                      ElevatedButton.icon(
+                        onPressed: _refreshTraction,
+                        icon: const Icon(Icons.search),
+                        label: const Text('Search'),
+                      ),
+                    ],
+                  ),
+                  AnimatedCrossFade(
+                    crossFadeState: _showAdvancedFilters
+                        ? CrossFadeState.showFirst
+                        : CrossFadeState.showSecond,
+                    duration: const Duration(milliseconds: 200),
+                    firstChild: Padding(
+                      padding: const EdgeInsets.only(top: 12.0),
+                      child: data.isEventFieldsLoading
+                          ? const Center(
+                              child: Padding(
+                                padding: EdgeInsets.all(8.0),
+                                child: CircularProgressIndicator(
+                                  strokeWidth: 2,
+                                ),
+                              ),
+                            )
+                          : extraFields.isEmpty
+                          ? const Text('No extra filters available right now.')
+                          : Wrap(
+                              spacing: 12,
+                              runSpacing: 12,
+                              children: extraFields
+                                  .map(
+                                    (field) => _buildFilterInput(
+                                      context,
+                                      field,
+                                      isMobile,
+                                    ),
+                                  )
+                                  .toList(),
+                            ),
+                    ),
+                    secondChild: const SizedBox.shrink(),
+                  ),
+                ],
+              ),
+            ),
+          ),
+          const SizedBox(height: 12),
+          Stack(
+            children: [
+              if (data.isTractionLoading && traction.isEmpty)
+                const Padding(
+                  padding: EdgeInsets.symmetric(vertical: 32.0),
+                  child: Center(child: CircularProgressIndicator()),
+                )
+              else if (traction.isEmpty)
+                Card(
+                  child: Padding(
+                    padding: const EdgeInsets.all(16.0),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(
+                          'No traction found',
+                          style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                            fontWeight: FontWeight.w700,
+                          ),
+                        ),
+                        const SizedBox(height: 8),
+                        const Text('Try relaxing the filters or sync again.'),
+                      ],
+                    ),
+                  ),
+                )
+              else
+                Column(
+                  children: [
+                    ...traction.map(
+                      (loco) => TractionCard(
+                        loco: loco,
+                        selectionMode: widget.selectionMode,
+                        isSelected: _isSelected(loco),
+                        onShowInfo: () => showTractionDetails(context, loco),
+                        onOpenTimeline: () => _openTimeline(loco),
+                        onOpenLegs: () => _openLegs(loco),
+                        onToggleSelect:
+                            widget.selectionMode ? () => _toggleSelection(loco) : null,
+                      ),
+                    ),
+                    if (data.tractionHasMore || data.isTractionLoading)
+                      Padding(
+                        padding: const EdgeInsets.only(top: 8.0),
+                        child: OutlinedButton.icon(
+                          onPressed: data.isTractionLoading
+                              ? null
+                              : () => _refreshTraction(append: true),
+                          icon: data.isTractionLoading
+                              ? const SizedBox(
+                                  height: 14,
+                                  width: 14,
+                                  child: CircularProgressIndicator(strokeWidth: 2),
+                                )
+                              : const Icon(Icons.expand_more),
+                          label: Text(
+                            data.isTractionLoading ? 'Loading...' : 'Load more',
+                          ),
+                        ),
+                      ),
+                  ],
+                ),
+              if (data.isTractionLoading)
+                Positioned.fill(
+                      child: IgnorePointer(
+                        child: Container(
+                      color: Theme.of(context).colorScheme.surface.withValues(alpha: 0.6),
+                      child: const Center(child: CircularProgressIndicator()),
+                    ),
+                  ),
+                ),
+            ],
+          ),
+        ],
+      ),
+    );
+
+    if (widget.selectionMode) {
+      return Scaffold(
+        appBar: AppBar(
+          leadingWidth: 140,
+          leading: Padding(
+            padding: const EdgeInsets.only(left: 8.0),
+            child: TextButton.icon(
+              onPressed: () => Navigator.of(context).pop(),
+              icon: const Icon(Icons.arrow_back),
+              label: const Text('Back'),
+              style: TextButton.styleFrom(
+                padding: const EdgeInsets.symmetric(
+                  horizontal: 12,
+                  vertical: 10,
+                ),
+                foregroundColor: Theme.of(context).colorScheme.onSurface,
+              ),
+            ),
+          ),
+          title: null,
+        ),
+        body: listView,
+      );
+    }
+
+    return listView;
+  }
+
+  void _toggleSelection(LocoSummary loco) {
+    final keyVal = '${loco.locoClass}-${loco.number}';
+    if (widget.onSelect != null) {
+      widget.onSelect!(loco);
+    }
+    setState(() {
+      if (_selectedKeys.contains(keyVal)) {
+        _selectedKeys.remove(keyVal);
+      } else {
+        _selectedKeys.add(keyVal);
+      }
+    });
+  }
+
+  bool _isSelected(LocoSummary loco) {
+    final keyVal = '${loco.locoClass}-${loco.number}';
+    return _selectedKeys.contains(keyVal);
+  }
+
+  Future<void> _openTimeline(LocoSummary loco) async {
+    final label = '${loco.locoClass} ${loco.number}'.trim();
+    await context.push(
+      '/traction/${loco.id}/timeline',
+      extra: {'label': label},
+    );
+    if (!mounted) return;
+    await _refreshTraction();
+  }
+
+  Future<void> _openLegs(LocoSummary loco) async {
+    final label = '${loco.locoClass} ${loco.number}'.trim();
+    await context.push(
+      '/traction/${loco.id}/legs',
+      extra: {'label': label},
+    );
+  }
+
+  Widget _buildFilterInput(
+    BuildContext context,
+    EventField field,
+    bool isMobile,
+  ) {
+    final width = isMobile ? double.infinity : 220.0;
+    if (field.enumValues != null && field.enumValues!.isNotEmpty) {
+      final options = field.enumValues!
+          .map((e) => e.toString())
+          .toSet()
+          .toList();
+      final currentValue = _enumSelections[field.name];
+      final safeValue = options.contains(currentValue) ? currentValue : null;
+      return SizedBox(
+        width: width,
+        child: DropdownButtonFormField<String?>(
+          value: safeValue,
+          decoration: InputDecoration(
+            labelText: field.display,
+            border: const OutlineInputBorder(),
+          ),
+          items: [
+            const DropdownMenuItem(value: null, child: Text('Any')),
+            ...options.map(
+              (value) => DropdownMenuItem(value: value, child: Text(value)),
+            ),
+          ],
+          onChanged: (val) {
+            setState(() {
+              _enumSelections[field.name] = val;
+            });
+            _refreshTraction();
+          },
+        ),
+      );
+    }
+
+    final controller =
+        _dynamicControllers[field.name] ?? TextEditingController();
+    _dynamicControllers[field.name] = controller;
+    TextInputType? inputType;
+    if (field.type != null) {
+      final type = field.type!.toLowerCase();
+      if (type.contains('int') ||
+          type.contains('num') ||
+          type.contains('double')) {
+        inputType = const TextInputType.numberWithOptions(decimal: true);
+      }
+    }
+
+    return SizedBox(
+      width: width,
+      child: TextField(
+        controller: controller,
+        keyboardType: inputType,
+        decoration: InputDecoration(
+          labelText: field.display,
+          border: const OutlineInputBorder(),
+        ),
+        onSubmitted: (_) => _refreshTraction(),
+      ),
+    );
+  }
+}

lib/components/pages/traction/traction_persistence.dart

@@ -0,0 +1,88 @@
+part of 'traction.dart';
+
+extension _TractionPersistence on _TractionPageState {
+  Future<void> _restoreSearchState() async {
+    if (widget.selectionMode) return;
+    if (_restoredFromPrefs) return;
+    _restoredFromPrefs = true;
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      final raw = prefs.getString(_kTractionSearchPrefsKey);
+      if (raw == null || raw.trim().isEmpty) return;
+      final decoded = jsonDecode(raw);
+      if (decoded is! Map) return;
+
+      final classText = decoded['classText']?.toString();
+      final numberText = decoded['number']?.toString();
+      final nameText = decoded['name']?.toString();
+      final selectedClass = decoded['selectedClass']?.toString();
+      final mileageFirst = decoded['mileageFirst'];
+      final showAdvanced = decoded['showAdvancedFilters'];
+
+      if (classText != null) _classController.text = classText;
+      if (numberText != null) _numberController.text = numberText;
+      if (nameText != null) _nameController.text = nameText;
+
+      final dynamicValues = <String, String>{};
+      final enumValues = <String, String?>{};
+      final dynamicRaw = decoded['dynamic'];
+      if (dynamicRaw is Map) {
+        for (final entry in dynamicRaw.entries) {
+          final key = entry.key.toString();
+          final val = entry.value?.toString() ?? '';
+          dynamicValues[key] = val;
+        }
+      }
+      final enumRaw = decoded['enum'];
+      if (enumRaw is Map) {
+        for (final entry in enumRaw.entries) {
+          enumValues[entry.key.toString()] = entry.value?.toString();
+        }
+      }
+
+      for (final entry in dynamicValues.entries) {
+        _dynamicControllers.putIfAbsent(
+          entry.key,
+          () => TextEditingController(text: entry.value),
+        );
+        _dynamicControllers[entry.key]?.text = entry.value;
+      }
+      for (final entry in enumValues.entries) {
+        _enumSelections[entry.key] = entry.value;
+      }
+
+      if (!mounted) return;
+      _setState(() {
+        _selectedClass =
+            (selectedClass != null && selectedClass.trim().isNotEmpty)
+                ? selectedClass
+                : null;
+        if (mileageFirst is bool) _mileageFirst = mileageFirst;
+        if (showAdvanced is bool) _showAdvancedFilters = showAdvanced;
+      });
+    } catch (_) {
+      // Ignore preference restore failures.
+    }
+  }
+
+  Future<void> _persistSearchState() async {
+    if (widget.selectionMode) return;
+    final payload = <String, dynamic>{
+      'classText': _classController.text,
+      'number': _numberController.text,
+      'name': _nameController.text,
+      'selectedClass': _selectedClass,
+      'mileageFirst': _mileageFirst,
+      'showAdvancedFilters': _showAdvancedFilters,
+      'dynamic': _dynamicControllers.map((k, v) => MapEntry(k, v.text)),
+      'enum': _enumSelections,
+    };
+
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setString(_kTractionSearchPrefsKey, jsonEncode(payload));
+    } catch (_) {
+      // Ignore persistence failures.
+    }
+  }
+}

lib/components/pages/trips.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
-import 'package:mileograph_flutter/services/dataService.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
 import 'package:provider/provider.dart';
 
 class TripsPage extends StatefulWidget {
@@ -26,6 +26,55 @@ class _TripsPageState extends State<TripsPage> {
     await context.read<DataService>().fetchTripDetails();
   }
 
+  Future<void> _renameTrip(TripDetail trip, String newName) async {
+    final data = context.read<DataService>();
+    final api = data.api;
+    final messenger = ScaffoldMessenger.maybeOf(context);
+    try {
+      await api.post('/trips/rename', {
+        "trip_id": trip.id,
+        "trip_name": newName,
+      });
+      await Future.wait([
+        data.fetchTripDetails(),
+        data.fetchTrips(),
+      ]);
+    } catch (e) {
+      messenger?.showSnackBar(
+        SnackBar(content: Text('Failed to rename trip: $e')),
+      );
+      rethrow;
+    }
+  }
+
+  Future<String?> _promptTripName(BuildContext context, String initial) async {
+    final controller = TextEditingController(text: initial);
+    final newName = await showDialog<String>(
+      context: context,
+      builder: (dialogCtx) => AlertDialog(
+        title: const Text('Rename trip'),
+        content: TextField(
+          controller: controller,
+          decoration: const InputDecoration(labelText: 'Trip name'),
+          autofocus: true,
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(dialogCtx).pop(),
+            child: const Text('Cancel'),
+          ),
+          TextButton(
+            onPressed: () =>
+                Navigator.of(dialogCtx).pop(controller.text.trim()),
+            child: const Text('Save'),
+          ),
+        ],
+      ),
+    );
+    controller.dispose();
+    return newName;
+  }
+
   @override
   Widget build(BuildContext context) {
     final data = context.watch<DataService>();
@@ -36,48 +85,60 @@ class _TripsPageState extends State<TripsPage> {
 
     return RefreshIndicator(
       onRefresh: _refreshTrips,
-      child: ListView(
+      child: ListView.builder(
         padding: const EdgeInsets.all(16),
         physics: const AlwaysScrollableScrollPhysics(),
-        children: [
+        itemCount: () {
-          Row(
+          if (showLoading) return 2;
-            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+          if (tripDetails.isEmpty && tripSummaries.isEmpty) return 2;
-            children: [
+          if (tripDetails.isEmpty) return 1 + tripSummaries.length;
-              Column(
+          return 1 + tripDetails.length;
-                crossAxisAlignment: CrossAxisAlignment.start,
+        }(),
-                children: [
+        itemBuilder: (context, index) {
-                  Text(
+          if (index == 0) {
-                    'Journeys',
+            return Column(
-                    style: Theme.of(context).textTheme.labelMedium,
+              crossAxisAlignment: CrossAxisAlignment.start,
-                  ),
+              children: [
-                  const SizedBox(height: 2),
+                Row(
-                  Text(
+                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                    'Trips',
+                  children: [
-                    style: Theme.of(context).textTheme.headlineSmall,
+                    Column(
-                  ),
+                      crossAxisAlignment: CrossAxisAlignment.start,
-                ],
+                      children: [
-              ),
+                        Text(
-              Row(
+                          'Journeys',
-                children: [
+                          style: Theme.of(context).textTheme.labelMedium,
-                  IconButton(
+                        ),
-                    onPressed: _refreshTrips,
+                        const SizedBox(height: 2),
-                    icon: const Icon(Icons.refresh),
+                        Text(
-                    tooltip: 'Refresh trips',
+                          'Trips',
-                  ),
+                          style: Theme.of(context).textTheme.headlineSmall,
-                ],
+                        ),
-              ),
+                      ],
-            ],
+                    ),
-          ),
+                    IconButton(
-          const SizedBox(height: 12),
+                      onPressed: _refreshTrips,
-          if (showLoading)
+                      icon: const Icon(Icons.refresh),
-            const Center(
+                      tooltip: 'Refresh trips',
+                    ),
+                  ],
+                ),
+                const SizedBox(height: 12),
+              ],
+            );
+          }
+
+          if (showLoading) {
+            return const Center(
               child: Padding(
                 padding: EdgeInsets.symmetric(vertical: 24.0),
                 child: CircularProgressIndicator(),
               ),
-            )
+            );
-          else if (tripDetails.isEmpty && tripSummaries.isEmpty)
+          }
-            Card(
+
+          if (tripDetails.isEmpty && tripSummaries.isEmpty) {
+            return Card(
               child: Padding(
                 padding: const EdgeInsets.all(16.0),
                 child: Column(
@@ -86,8 +147,8 @@ class _TripsPageState extends State<TripsPage> {
                     Text(
                       'No trips yet',
                       style: Theme.of(context).textTheme.titleMedium?.copyWith(
-                        fontWeight: FontWeight.w700,
+                            fontWeight: FontWeight.w700,
-                      ),
+                          ),
                     ),
                     const SizedBox(height: 8),
                     const Text(
@@ -96,29 +157,22 @@ class _TripsPageState extends State<TripsPage> {
                   ],
                 ),
               ),
-            )
+            );
-          else if (tripDetails.isEmpty)
+          }
-            Column(
+
-              children: tripSummaries
+          if (tripDetails.isEmpty) {
-                  .map(
+            final trip = tripSummaries[index - 1];
-                    (trip) => Card(
+            return Card(
-                      child: ListTile(
+              child: ListTile(
-                        title: Text(trip.tripName),
+                title: Text(trip.tripName),
-                        subtitle: Text(
+                subtitle: Text('${trip.tripMileage.toStringAsFixed(1)} mi'),
-                          '${trip.tripMileage.toStringAsFixed(1)} mi',
+              ),
-                        ),
+            );
-                      ),
+          }
-                    ),
+
-                  )
+          final trip = tripDetails[index - 1];
-                  .toList(),
+          return _buildTripCard(context, trip, isMobile);
-            )
+        },
-          else
-            Column(
-              children: tripDetails
-                  .map((trip) => _buildTripCard(context, trip, isMobile))
-                  .toList(),
-            ),
-        ],
       ),
     );
   }
@@ -213,52 +267,85 @@ class _TripsPageState extends State<TripsPage> {
       context: context,
       isScrollControlled: true,
       builder: (_) {
-        return SafeArea(
+        bool renaming = false;
-          child: Padding(
+        String tripName = trip.name;
-            padding: const EdgeInsets.all(16.0),
+        return StatefulBuilder(
-            child: Column(
+          builder: (sheetCtx, setSheetState) {
-              mainAxisSize: MainAxisSize.min,
+            Future<void> handleRename() async {
-              crossAxisAlignment: CrossAxisAlignment.start,
+              final newName =
-              children: [
+                  await _promptTripName(sheetCtx, tripName) ?? tripName;
-                Row(
+              if (newName.isEmpty || newName == tripName) return;
+              setSheetState(() => renaming = true);
+              try {
+                await _renameTrip(trip, newName);
+                tripName = newName;
+                setSheetState(() {});
+              } finally {
+                if (mounted) setSheetState(() => renaming = false);
+              }
+            }
+
+            return SafeArea(
+              child: Padding(
+                padding: const EdgeInsets.all(16.0),
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  crossAxisAlignment: CrossAxisAlignment.start,
                   children: [
-                    IconButton(
+                    Row(
-                      icon: const Icon(Icons.arrow_back),
+                      children: [
-                      onPressed: () => Navigator.of(context).pop(),
+                        IconButton(
+                          icon: const Icon(Icons.arrow_back),
+                          onPressed: () => Navigator.of(sheetCtx).pop(),
+                        ),
+                        Expanded(
+                          child: Text(
+                            tripName,
+                            style: Theme.of(context).textTheme.titleMedium
+                                ?.copyWith(fontWeight: FontWeight.bold),
+                          ),
+                        ),
+                        IconButton(
+                          icon: renaming
+                              ? const SizedBox(
+                                  width: 18,
+                                  height: 18,
+                                  child:
+                                      CircularProgressIndicator(strokeWidth: 2),
+                                )
+                              : const Icon(Icons.edit),
+                          tooltip: 'Rename trip',
+                          onPressed: renaming ? null : handleRename,
+                        ),
+                        const SizedBox(width: 4),
+                        Text('${trip.mileage.toStringAsFixed(1)} mi'),
+                      ],
                     ),
-                    Text(
+                    const SizedBox(height: 8),
-                      trip.name,
+                    SizedBox(
-                      style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                      height: MediaQuery.of(context).size.height * 0.6,
-                        fontWeight: FontWeight.bold,
+                      child: ListView.builder(
+                        itemCount: trip.legs.length,
+                        itemBuilder: (context, index) {
+                          final leg = trip.legs[index];
+                          return ListTile(
+                            leading: const Icon(Icons.train),
+                            title: Text('${leg.start} → ${leg.end}'),
+                            subtitle: Text(_formatDate(leg.beginTime)),
+                            trailing: Text(
+                              leg.mileage?.toStringAsFixed(1) ?? '-',
+                              style: Theme.of(context).textTheme.labelLarge
+                                  ?.copyWith(fontWeight: FontWeight.bold),
+                            ),
+                          );
+                        },
                       ),
                     ),
-                    const Spacer(),
-                    Text('${trip.mileage.toStringAsFixed(1)} mi'),
                   ],
                 ),
-                const SizedBox(height: 8),
+              ),
-                SizedBox(
+            );
-                  height: MediaQuery.of(context).size.height * 0.6,
+          },
-                  child: ListView.builder(
-                    itemCount: trip.legs.length,
-                    itemBuilder: (context, index) {
-                      final leg = trip.legs[index];
-                      return ListTile(
-                        leading: const Icon(Icons.train),
-                        title: Text('${leg.start} → ${leg.end}'),
-                        subtitle: Text(_formatDate(leg.beginTime)),
-                        trailing: Text(
-                          leg.mileage?.toStringAsFixed(1) ?? '-',
-                          style: Theme.of(context).textTheme.labelLarge
-                              ?.copyWith(fontWeight: FontWeight.bold),
-                        ),
-                      );
-                    },
-                  ),
-                ),
-              ],
-            ),
-          ),
         );
       },
     );

lib/components/traction/traction_card.dart

@@ -0,0 +1,346 @@
+import 'package:flutter/material.dart';
+import 'package:mileograph_flutter/objects/objects.dart';
+
+class TractionCard extends StatelessWidget {
+  const TractionCard({
+    super.key,
+    required this.loco,
+    required this.selectionMode,
+    required this.isSelected,
+    required this.onShowInfo,
+    required this.onOpenTimeline,
+    this.onOpenLegs,
+    this.onToggleSelect,
+  });
+
+  final LocoSummary loco;
+  final bool selectionMode;
+  final bool isSelected;
+  final VoidCallback onShowInfo;
+  final VoidCallback onOpenTimeline;
+  final VoidCallback? onOpenLegs;
+  final VoidCallback? onToggleSelect;
+
+  @override
+  Widget build(BuildContext context) {
+    final status = loco.status ?? 'Unknown';
+    final operatorName = loco.operator ?? '';
+    final domain = loco.domain ?? '';
+    final hasMileageOrTrips = _hasMileageOrTrips(loco);
+    final statusColors = _statusChipColors(context, status);
+
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(12.0),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Row(
+                      children: [
+                        Text(
+                          loco.number,
+                          style: Theme.of(context).textTheme.headlineSmall
+                              ?.copyWith(fontWeight: FontWeight.w800),
+                        ),
+                        if (hasMileageOrTrips)
+                          Padding(
+                            padding: const EdgeInsets.only(left: 6.0),
+                            child: Icon(
+                              Icons.check_circle,
+                              size: 18,
+                              color: Colors.green.shade600,
+                            ),
+                          ),
+                      ],
+                    ),
+                    Text(
+                      loco.locoClass,
+                      style: Theme.of(context).textTheme.labelMedium,
+                    ),
+                    if ((loco.name ?? '').isNotEmpty)
+                      Padding(
+                        padding: const EdgeInsets.only(top: 2.0),
+                        child: Text(
+                          loco.name ?? '',
+                          style: Theme.of(context).textTheme.bodyMedium
+                              ?.copyWith(fontStyle: FontStyle.italic),
+                        ),
+                      ),
+                  ],
+                ),
+                Chip(
+                  label: Text(status),
+                  backgroundColor: statusColors.$1,
+                  labelStyle: TextStyle(color: statusColors.$2),
+                ),
+              ],
+            ),
+            const SizedBox(height: 8),
+            Row(
+              children: [
+                TextButton.icon(
+                  onPressed: onShowInfo,
+                  icon: const Icon(Icons.info_outline),
+                  label: const Text('Details'),
+                ),
+                const SizedBox(width: 8),
+                TextButton.icon(
+                  onPressed: onOpenTimeline,
+                  icon: const Icon(Icons.timeline),
+                  label: const Text('Timeline'),
+                ),
+                if (hasMileageOrTrips && onOpenLegs != null) ...[
+                  const SizedBox(width: 8),
+                  TextButton.icon(
+                    onPressed: onOpenLegs,
+                    icon: const Icon(Icons.view_list),
+                    label: const Text('Legs'),
+                  ),
+                ],
+                const Spacer(),
+                if (selectionMode && onToggleSelect != null)
+                  TextButton.icon(
+                    onPressed: onToggleSelect,
+                    icon: Icon(
+                      isSelected
+                          ? Icons.remove_circle_outline
+                          : Icons.add_circle_outline,
+                    ),
+                    label: Text(isSelected ? 'Remove' : 'Add to entry'),
+                  ),
+              ],
+            ),
+            Wrap(
+              spacing: 8,
+              runSpacing: 4,
+              children: [
+                _statPill(
+                  context,
+                  label: 'Miles',
+                  value: _formatNumber(loco.mileage),
+                ),
+                _statPill(
+                  context,
+                  label: 'Trips',
+                  value: (loco.trips ?? loco.journeys ?? 0).toString(),
+                ),
+                if (operatorName.isNotEmpty)
+                  _statPill(context, label: 'Operator', value: operatorName),
+                if (domain.isNotEmpty)
+                  _statPill(context, label: 'Domain', value: domain),
+              ],
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _statPill(
+    BuildContext context, {
+    required String label,
+    required String value,
+  }) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+      decoration: BoxDecoration(
+        color: Theme.of(context).colorScheme.surfaceContainerHighest,
+        borderRadius: BorderRadius.circular(10),
+      ),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Text('$label: ', style: Theme.of(context).textTheme.labelSmall),
+          Text(
+            value,
+            style: Theme.of(
+              context,
+            ).textTheme.labelSmall?.copyWith(fontWeight: FontWeight.w700),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+Future<void> showTractionDetails(
+  BuildContext context,
+  LocoSummary loco,
+) async {
+  final hasMileageOrTrips = _hasMileageOrTrips(loco);
+  await showModalBottomSheet(
+    context: context,
+    isScrollControlled: true,
+    builder: (ctx) {
+      return DraggableScrollableSheet(
+        expand: false,
+        maxChildSize: 0.9,
+        initialChildSize: 0.65,
+        builder: (_, controller) {
+          return Padding(
+            padding: const EdgeInsets.all(16.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Row(
+                  children: [
+                    IconButton(
+                      icon: const Icon(Icons.close),
+                      onPressed: () => Navigator.of(ctx).pop(),
+                    ),
+                    const SizedBox(width: 8),
+                    Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Row(
+                          children: [
+                            Text(
+                              loco.number,
+                              style: Theme.of(context).textTheme.titleLarge
+                                  ?.copyWith(fontWeight: FontWeight.w800),
+                            ),
+                            if (hasMileageOrTrips)
+                              Padding(
+                                padding: const EdgeInsets.only(left: 6.0),
+                                child: Icon(
+                                  Icons.check_circle,
+                                  size: 18,
+                                  color: Colors.green.shade600,
+                                ),
+                              ),
+                          ],
+                        ),
+                        Text(
+                          loco.locoClass,
+                          style: Theme.of(context).textTheme.labelMedium,
+                        ),
+                      ],
+                    ),
+                  ],
+                ),
+                if ((loco.name ?? '').isNotEmpty)
+                  Padding(
+                    padding: const EdgeInsets.only(left: 52.0, bottom: 12),
+                    child: Text(
+                      loco.name ?? '',
+                      style: Theme.of(context).textTheme.bodyMedium,
+                    ),
+                  ),
+                const SizedBox(height: 4),
+                Expanded(
+                  child: ListView(
+                    controller: controller,
+                    children: [
+                      _detailRow(context, 'Status', loco.status ?? 'Unknown'),
+                      _detailRow(context, 'Operator', loco.operator ?? ''),
+                      _detailRow(context, 'Domain', loco.domain ?? ''),
+                      _detailRow(context, 'Owner', loco.owner ?? ''),
+                      _detailRow(context, 'Livery', loco.livery ?? ''),
+                      _detailRow(context, 'Location', loco.location ?? ''),
+                      _detailRow(
+                        context,
+                        'Mileage',
+                        _formatNumber(loco.mileage ?? 0),
+                      ),
+                      _detailRow(
+                        context,
+                        'Trips',
+                        (loco.trips ?? loco.journeys ?? 0).toString(),
+                      ),
+                      _detailRow(context, 'EVN', loco.evn ?? ''),
+                      if (loco.notes != null && loco.notes!.isNotEmpty)
+                        _detailRow(context, 'Notes', loco.notes!),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          );
+        },
+      );
+    },
+  );
+}
+
+Widget _detailRow(BuildContext context, String label, String value) {
+  if (value.isEmpty) return const SizedBox.shrink();
+  return Padding(
+    padding: const EdgeInsets.symmetric(vertical: 6.0),
+    child: Row(
+      children: [
+        SizedBox(
+          width: 110,
+          child: Text(
+            label,
+            style: Theme.of(context)
+                .textTheme
+                .labelMedium
+                ?.copyWith(fontWeight: FontWeight.w600),
+          ),
+        ),
+        Expanded(
+          child: Text(value, style: Theme.of(context).textTheme.bodyMedium),
+        ),
+      ],
+    ),
+  );
+}
+
+(Color, Color) _statusChipColors(BuildContext context, String status) {
+  final scheme = Theme.of(context).colorScheme;
+  final isDark = scheme.brightness == Brightness.dark;
+  Color blend(
+    Color base, {
+    double bgOpacity = 0.18,
+    double fgOpacity = 0.82,
+  }) {
+    final bg = Color.alphaBlend(
+      base.withValues(alpha: isDark ? bgOpacity + 0.07 : bgOpacity),
+      scheme.surface,
+    );
+    final fg = Color.alphaBlend(
+      base.withValues(alpha: isDark ? fgOpacity : fgOpacity * 0.8),
+      scheme.onSurface,
+    );
+    return Color.lerp(bg, fg, 0.0) ?? bg;
+  }
+
+  Color background;
+  Color foreground;
+  final key = status.toLowerCase();
+
+  if (key.contains('scrap')) {
+    background = blend(Colors.red);
+    foreground = Colors.red.shade200.withValues(alpha: isDark ? 0.85 : 0.9);
+  } else if (key.contains('active')) {
+    background = blend(scheme.primary);
+    foreground = scheme.primary.withValues(alpha: isDark ? 0.9 : 0.8);
+  } else if (key.contains('withdrawn')) {
+    background = blend(Colors.amber);
+    foreground = Colors.amber.shade800.withValues(alpha: isDark ? 0.9 : 0.8);
+  } else if (key.contains('stored') || key.contains('unknown')) {
+    background = blend(Colors.grey);
+    foreground = Colors.grey.shade700.withValues(alpha: isDark ? 0.85 : 0.75);
+  } else {
+    background = scheme.surfaceContainerHighest;
+    foreground = scheme.onSurface;
+  }
+  return (background, foreground);
+}
+
+bool _hasMileageOrTrips(LocoSummary loco) {
+  final mileage = loco.mileage ?? 0;
+  final trips = loco.trips ?? loco.journeys ?? 0;
+  return mileage > 0 || trips > 0;
+}
+
+String _formatNumber(double? value) {
+  if (value == null) return '0';
+  return value.toStringAsFixed(1);
+}

lib/main.dart

@@ -1,327 +1,7 @@
 import 'package:flutter/material.dart';
-import 'package:dynamic_color/dynamic_color.dart';
+import 'package:mileograph_flutter/app.dart';
-import 'package:mileograph_flutter/components/pages/calculator.dart';
-import 'package:mileograph_flutter/components/pages/loco_timeline.dart';
-import 'package:mileograph_flutter/components/pages/new_entry.dart';
-import 'package:mileograph_flutter/components/pages/new_traction.dart';
-import 'package:mileograph_flutter/components/pages/traction.dart';
-import 'package:mileograph_flutter/components/pages/trips.dart';
-import 'package:provider/provider.dart';
-
-import 'package:mileograph_flutter/components/pages/legs.dart';
-import 'package:mileograph_flutter/services/apiService.dart';
-import 'package:mileograph_flutter/services/authservice.dart';
-import 'package:mileograph_flutter/services/dataService.dart';
-import 'package:mileograph_flutter/services/navigation_guard.dart';
-
-import 'components/login/login.dart';
-import 'components/pages/dashboard.dart';
-
-import 'package:go_router/go_router.dart';
-
-late ApiService api;
 
 void main() {
-  runApp(
+  runApp(const App());
-    MultiProvider(
-      providers: [
-        Provider<ApiService>(
-          create: (_) {
-            api = ApiService(baseUrl: 'https://mileograph.co.uk/api/v1');
-            return api;
-          },
-        ),
-        ChangeNotifierProxyProvider<ApiService, AuthService>(
-          create: (context) => AuthService(api: context.read<ApiService>()),
-          update: (_, api, previous) {
-            return previous ?? AuthService(api: api);
-          },
-        ),
-        ProxyProvider<AuthService, void>(
-          update: (_, auth, __) {
-            api.setTokenProvider(() => auth.token);
-            api.setUnauthorizedHandler(() => auth.handleTokenExpired());
-          },
-        ),
-        ChangeNotifierProxyProvider<ApiService, DataService>(
-          create: (context) => DataService(api: context.read<ApiService>()),
-          update: (_, api, previous) => previous ?? DataService(api: api),
-        ),
-      ],
-      child: MyApp(),
-    ),
-  );
 }
 
-class MyApp extends StatelessWidget {
-  MyApp({super.key});
-
-  final ColorScheme defaultLight = ColorScheme.fromSeed(seedColor: Colors.red);
-  final ColorScheme defaultDark = ColorScheme.fromSeed(
-    seedColor: Colors.red,
-    brightness: Brightness.dark,
-  );
-
-  // This widget is the root of your application.
-  @override
-  Widget build(BuildContext context) {
-    final GoRouter router = GoRouter(
-      refreshListenable: context
-          .read<AuthService>(), // `AuthService` extends `ChangeNotifier`
-      redirect: (context, state) {
-        final auth = Provider.of<AuthService>(context, listen: false);
-        final loggedIn = auth.isLoggedIn;
-        final loggingIn = state.uri.toString() == '/login';
-
-        // Redirect to login if not logged in and trying to access protected pages
-        if (!loggedIn && !loggingIn) return '/login';
-
-        // Redirect to home if already logged in and trying to go to login
-        if (loggedIn && loggingIn) return '/';
-
-        // No redirection
-        return null;
-      },
-      routes: [
-        ShellRoute(
-          builder: (context, state, child) {
-            return MyHomePage(child: child);
-          },
-          routes: [
-            GoRoute(path: '/', builder: (_, __) => const Dashboard()),
-            GoRoute(path: '/calculator', builder: (_, __) => CalculatorPage()),
-            GoRoute(
-              path: '/calculator/details',
-              builder: (_, __) => CalculatorPage(),
-            ),
-            GoRoute(path: '/legs', builder: (_, __) => LegsPage()),
-            GoRoute(path: '/traction', builder: (_, __) => TractionPage()),
-            GoRoute(
-              path: '/traction/:id/timeline',
-              builder: (_, state) {
-                final idParam = state.pathParameters['id'];
-                final locoId = int.tryParse(idParam ?? '') ?? 0;
-                final extra = state.extra;
-                String label = state.uri.queryParameters['label'] ?? '';
-                if (extra is Map && extra['label'] is String) {
-                  label = extra['label'] as String;
-                } else if (extra is String && extra.isNotEmpty) {
-                  label = extra;
-                }
-                if (label.trim().isEmpty) {
-                  label = 'Loco $locoId';
-                }
-                return LocoTimelinePage(
-                  locoId: locoId,
-                  locoLabel: label,
-                );
-              },
-            ),
-            GoRoute(
-              path: '/traction/new',
-              builder: (_, __) => const NewTractionPage(),
-            ),
-            GoRoute(path: '/trips', builder: (_, __) => TripsPage()),
-            GoRoute(path: '/add', builder: (_, __) => NewEntryPage()),
-            GoRoute(
-              path: '/legs/edit/:id',
-              builder: (_, state) {
-                final idParam = state.pathParameters['id'];
-                final legId = idParam == null ? null : int.tryParse(idParam);
-                return NewEntryPage(editLegId: legId);
-              },
-            ),
-          ],
-        ),
-        GoRoute(path: '/login', builder: (_, __) => const LoginScreen()),
-      ],
-    );
-
-    return DynamicColorBuilder(
-      builder: (ColorScheme? lightDynamic, ColorScheme? darkDynamic) {
-        return MaterialApp.router(
-          title: 'Flutter Demo',
-          routerConfig: router,
-          theme: ThemeData(
-            useMaterial3: true,
-            // This is the theme of your application.
-            //
-            // TRY THIS: Try running your application with "flutter run". You'll see
-            // the application has a purple toolbar. Then, without quitting the app,
-            // try changing the seedColor in the colorScheme below to Colors.green
-            // and then invoke "hot reload" (save your changes or press the "hot
-            // reload" button in a Flutter-supported IDE, or press "r" if you used
-            // the command line to start the app).
-            //fullPage
-            // Notice that the counter didn't reset back to zero; the application
-            // state is not lost during the reload. To reset the state, use hot
-            // restart instead.
-            //
-            // This works for code too, not just values: Most code changes can be
-            // tested with just a hot reload.
-            colorScheme: lightDynamic ?? defaultLight,
-          ),
-          darkTheme: ThemeData(
-            useMaterial3: true,
-            colorScheme: darkDynamic ?? defaultDark,
-          ),
-          themeMode: ThemeMode.system,
-        );
-      },
-    );
-  }
-}
-
-class MyHomePage extends StatefulWidget {
-  final Widget child;
-  const MyHomePage({super.key, required this.child});
-
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
-  @override
-  State<MyHomePage> createState() => _MyHomePageState();
-}
-
-class _MyHomePageState extends State<MyHomePage> {
-  final List<String> contentPages = [
-    "/",
-    "/calculator",
-    "/legs",
-    "/traction",
-    "/trips",
-    "/add",
-  ];
-
-  int _getIndexFromLocation(String location) {
-    int newIndex = contentPages.indexWhere((path) {
-      if (location == path) return true;
-      if (path == '/') return location == '/';
-      return location.startsWith('$path/');
-    });
-    if (newIndex < 0) {
-      return 0;
-    }
-    return newIndex;
-  }
-
-  Future<void> _onItemTapped(int index, int currentIndex) async {
-    if (index < 0 || index >= contentPages.length || index == currentIndex) {
-      return;
-    }
-    await NavigationGuard.attemptNavigation(() async {
-      if (!mounted) return;
-      context.go(contentPages[index]);
-    });
-  }
-
-  bool loggedIn = false;
-  bool _fetched = false;
-
-  @override
-  void didChangeDependencies() {
-    super.didChangeDependencies();
-
-    if (!_fetched) {
-      _fetched = true;
-      WidgetsBinding.instance.addPostFrameCallback((_) {
-        Future(() async {
-          final data = context.read<DataService>();
-          final auth = context.read<AuthService>();
-          api.setTokenProvider(() => auth.token);
-          await auth.tryRestoreSession();
-          if (!auth.isLoggedIn) return;
-          data.fetchEventFields();
-          if (data.homepageStats == null) {
-            data.fetchHomepageStats();
-          }
-          if (data.legs.isEmpty) {
-            data.fetchLegs();
-          }
-          if (data.traction.isEmpty) {
-            data.fetchHadTraction();
-          }
-          if (data.onThisDay.isEmpty) {
-            data.fetchOnThisDay();
-          }
-          if (data.tripDetails.isEmpty) {
-            data.fetchTripDetails();
-          }
-        });
-      });
-    }
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    Widget currentPage;
-    final location = GoRouterState.of(context).uri.toString();
-    final pageIndex = _getIndexFromLocation(location);
-    final data = context.watch<DataService>();
-    final auth = context.read<AuthService>();
-
-    if (data.homepageStats != null || !data.isHomepageLoading) {
-      currentPage = widget.child;
-    } else {
-      currentPage = Center(child: CircularProgressIndicator());
-    }
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
-    return Scaffold(
-      appBar: AppBar(
-        // TRY THIS: Try changing the color here to a specific color (to
-        // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
-        // change color while the other colors stay the same.
-        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
-        title: Text.rich(
-          TextSpan(
-            children: [
-              TextSpan(text: "Mile"),
-              TextSpan(
-                text: "O",
-                style: TextStyle(color: Colors.red),
-              ),
-              TextSpan(text: "graph"),
-            ],
-            style: TextStyle(
-              decoration: TextDecoration.none,
-              color: Colors.white,
-              fontFamily: "Tomatoes",
-            ),
-          ),
-        ),
-        actions: [
-          IconButton(onPressed: null, icon: Icon(Icons.account_circle)),
-          IconButton(onPressed: auth.logout, icon: Icon(Icons.logout)),
-        ],
-      ),
-      bottomNavigationBar: NavigationBar(
-        selectedIndex: pageIndex,
-        onDestinationSelected: (int index) {
-          _onItemTapped(index, pageIndex);
-        },
-        destinations: [
-          NavigationDestination(icon: Icon(Icons.home), label: "Home"),
-          NavigationDestination(icon: Icon(Icons.route), label: "Calculator"),
-          NavigationDestination(icon: Icon(Icons.list), label: "Entries"),
-          NavigationDestination(icon: Icon(Icons.train), label: "Traction"),
-          NavigationDestination(icon: Icon(Icons.book), label: "Trips"),
-          NavigationDestination(icon: Icon(Icons.add), label: "Add"),
-        ],
-      ),
-      body: currentPage,
-    );
-  }
-}

lib/objects/objects.dart

@@ -1,6 +1,40 @@
 import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 
+int _asInt(dynamic value, [int? fallback]) {
+  if (value is int) return value;
+  if (value is num) return value.toInt();
+  final parsed = int.tryParse(value?.toString() ?? '');
+  return parsed ?? fallback ?? 0;
+}
+
+double _asDouble(dynamic value, [double fallback = 0]) {
+  if (value is double) return value;
+  if (value is num) return value.toDouble();
+  final parsed = double.tryParse(value?.toString() ?? '');
+  return parsed ?? fallback;
+}
+
+String _asString(dynamic value, [String fallback = '']) {
+  final str = value?.toString();
+  return (str == null) ? fallback : str;
+}
+
+bool _asBool(dynamic value, [bool fallback = false]) {
+  if (value is bool) return value;
+  if (value is num) return value != 0;
+  final lower = value?.toString().toLowerCase();
+  if (lower == 'true' || lower == 'yes' || lower == '1') return true;
+  if (lower == 'false' || lower == 'no' || lower == '0') return false;
+  return fallback;
+}
+
+DateTime _asDateTime(dynamic value, [DateTime? fallback]) {
+  if (value is DateTime) return value;
+  final parsed = DateTime.tryParse(value?.toString() ?? '');
+  return parsed ?? (fallback ?? DateTime.fromMillisecondsSinceEpoch(0));
+}
+
 class DestinationObject {
   const DestinationObject(
     this.label,
@@ -16,24 +50,24 @@ class DestinationObject {
 }
 
 class UserData {
-  const UserData(this.username, this.full_name, this.user_id, this.email);
+  const UserData(this.username, this.fullName, this.userId, this.email);
 
-  final String user_id;
+  final String userId;
   final String username;
-  final String full_name;
+  final String fullName;
   final String email;
 }
 
 class AuthenticatedUserData extends UserData {
   const AuthenticatedUserData({
-    required String user_id,
+    required String userId,
     required String username,
-    required String full_name,
+    required String fullName,
     required String email,
-    required this.access_token,
+    required this.accessToken,
-  }) : super(username, full_name, user_id, email);
+  }) : super(username, fullName, userId, email);
 
-  final String access_token;
+  final String accessToken;
 }
 
 class HomepageStats {
@@ -42,6 +76,7 @@ class HomepageStats {
   final List<LocoSummary> topLocos;
   final List<LeaderboardEntry> leaderboard;
   final List<TripSummary> trips;
+  final int legCount;
   final UserData? user;
 
   HomepageStats({
@@ -50,6 +85,7 @@ class HomepageStats {
     required this.topLocos,
     required this.leaderboard,
     required this.trips,
+    required this.legCount,
     this.user,
   });
 
@@ -73,6 +109,10 @@ class HomepageStats {
       trips: (json['trip_data'] as List? ?? [])
           .map((e) => TripSummary.fromJson(e))
           .toList(),
+      legCount: _asInt(
+        json['leg_count'],
+        (json['trip_legs'] as List?)?.length ?? 0,
+      ),
       user: userData == null
           ? null
           : UserData(
@@ -92,8 +132,8 @@ class YearlyMileage {
   YearlyMileage({this.year, required this.mileage});
 
   factory YearlyMileage.fromJson(Map<String, dynamic> json) => YearlyMileage(
-    year: json['year'],
+    year: json['year'] is int ? json['year'] as int : int.tryParse('${json['year']}'),
-    mileage: (json['mileage'] as num).toDouble(),
+    mileage: _asDouble(json['mileage']),
   );
 }
 
@@ -101,6 +141,7 @@ class Loco {
   final int id;
   final String type, number, locoClass;
   final String? name, operator, notes, evn;
+  final bool powering;
 
   Loco({
     required this.id,
@@ -111,6 +152,7 @@ class Loco {
     required this.operator,
     this.notes,
     this.evn,
+    this.powering = true,
   });
 
   factory Loco.fromJson(Map<String, dynamic> json) => Loco(
@@ -122,6 +164,7 @@ class Loco {
     operator: json['operator'],
     notes: json['notes'],
     evn: json['evn'],
+    powering: _asBool(json['alloc_powering'] ?? json['powering'], true),
   );
 }
 
@@ -154,6 +197,7 @@ class LocoSummary extends Loco {
     this.livery,
     this.location,
     Map<String, dynamic>? extra,
+    bool powering = true,
   }) : extra = extra ?? const {},
        super(
          id: locoId,
@@ -163,6 +207,7 @@ class LocoSummary extends Loco {
          operator: locoOperator,
          notes: locoNotes,
          evn: locoEvn,
+         powering: powering,
        );
 
   factory LocoSummary.fromJson(Map<String, dynamic> json) => LocoSummary(
@@ -188,6 +233,7 @@ class LocoSummary extends Loco {
     livery: json['livery'],
     location: json['location'],
     extra: Map<String, dynamic>.from(json),
+    powering: _asBool(json['alloc_powering'] ?? json['powering'], true),
   );
 }
 
@@ -328,6 +374,96 @@ class LocoAttrVersion {
   }
 }
 
+class LocoChange {
+  final int locoId;
+  final String locoClass;
+  final String locoNumber;
+  final String locoName;
+  final String attrCode;
+  final String attrDisplay;
+  final String valueDisplay;
+  final DateTime? validFrom;
+  final DateTime? approvedAt;
+  final String approvedBy;
+
+  const LocoChange({
+    required this.locoId,
+    required this.locoClass,
+    required this.locoNumber,
+    required this.locoName,
+    required this.attrCode,
+    required this.attrDisplay,
+    required this.valueDisplay,
+    required this.validFrom,
+    required this.approvedAt,
+    required this.approvedBy,
+  });
+
+  factory LocoChange.fromJson(Map<String, dynamic> json) {
+    String _clean(dynamic value) {
+      final str = value?.toString().trim() ?? '';
+      if (str.isEmpty || str == '-' || str == '?') return '';
+      return str;
+    }
+
+    final valueLabel = json['value_norm'] ??
+        json['value_display'] ??
+        json['value_label'] ??
+        json['value_str'] ??
+        json['value_enum'] ??
+        json['value_norm'] ??
+        json['value'];
+    final approvedRaw = json['approved_at'] ?? json['approvedAt'];
+    final validFromRaw = json['valid_from'] ?? json['validFrom'];
+    return LocoChange(
+      locoId: _asInt(json['loco_id']),
+      locoClass: _clean(json['loco_class']),
+      locoNumber: _clean(json['loco_number']),
+      locoName: _clean(json['loco_name']),
+      attrCode: _asString(json['attr_code']),
+      attrDisplay: _clean(json['attr_display']),
+      valueDisplay: _clean(valueLabel),
+      validFrom: DateTime.tryParse(validFromRaw?.toString() ?? ''),
+      approvedAt: DateTime.tryParse(approvedRaw?.toString() ?? ''),
+      approvedBy: _clean(json['approved_by']),
+    );
+  }
+
+  String get locoLabel {
+    final parts = [locoClass, locoNumber]
+        .map((e) => e.trim())
+        .where((e) => e.isNotEmpty && e != '-')
+        .toList();
+    final label = parts.join(' ');
+    if (label.isEmpty) return locoName.isNotEmpty ? locoName : 'Loco $locoId';
+    return locoName.trim().isEmpty ? label : '$label — ${locoName.trim()}';
+  }
+
+  String get changeLabel =>
+      _cleanLabel(attrDisplay).isNotEmpty
+          ? _cleanLabel(attrDisplay)
+          : _cleanLabel(attrCode).toUpperCase();
+
+  String get approvedDateLabel {
+    final date = approvedAt ?? validFrom;
+    if (date == null) return 'Pending date';
+    return DateFormat('yyyy-MM-dd').format(date);
+  }
+
+  String get valueLabel {
+    final value = _cleanLabel(valueDisplay);
+    if (value.isNotEmpty) return value;
+    return 'Unknown value';
+  }
+
+  String _cleanLabel(String raw) {
+    final trimmed = raw.trim();
+    if (trimmed.isEmpty) return '';
+    if (trimmed == '-' || trimmed == '?') return '';
+    return trimmed;
+  }
+}
+
 class LeaderboardEntry {
   final String userId, username, userFullName;
   final double mileage;
@@ -341,10 +477,10 @@ class LeaderboardEntry {
 
   factory LeaderboardEntry.fromJson(Map<String, dynamic> json) =>
       LeaderboardEntry(
-        userId: json['user_id'],
+        userId: _asString(json['user_id']),
-        username: json['username'],
+        username: _asString(json['username']),
-        userFullName: json['user_full_name'],
+        userFullName: _asString(json['user_full_name']),
-        mileage: (json['mileage'] as num).toDouble(),
+        mileage: _asDouble(json['mileage']),
       );
 }
 
@@ -360,9 +496,9 @@ class TripSummary {
   });
 
   factory TripSummary.fromJson(Map<String, dynamic> json) => TripSummary(
-    tripId: json['trip_id'],
+    tripId: _asInt(json['trip_id']),
-    tripName: json['trip_name'],
+    tripName: _asString(json['trip_name']),
-    tripMileage: (json['trip_mileage'] as num).toDouble(),
+    tripMileage: _asDouble(json['trip_mileage']),
   );
 }
 
@@ -391,21 +527,22 @@ class Leg {
   });
 
   factory Leg.fromJson(Map<String, dynamic> json) => Leg(
-    id: json['leg_id'],
+    id: _asInt(json['leg_id']),
-    tripId: json['leg_trip'] ?? 0,
+    tripId: _asInt(json['leg_trip']),
-    start: json['leg_start'],
+    start: _asString(json['leg_start']),
-    end: json['leg_end'],
+    end: _asString(json['leg_end']),
-    beginTime: DateTime.parse(json['leg_begin_time']),
+    beginTime: _asDateTime(json['leg_begin_time']),
-    timezone: (json['leg_timezone'] as num).toInt(),
+    timezone: _asInt(json['leg_timezone']),
-    network: json['leg_network'] ?? "",
+    network: _asString(json['leg_network']),
-    route: json['leg_route'],
+    route: _asString(json['leg_route']),
-    mileage: (json['leg_mileage'] as num).toDouble(),
+    mileage: _asDouble(json['leg_mileage']),
-    notes: json['leg_notes'] ?? "",
+    notes: _asString(json['leg_notes']),
-    headcode: json['leg_headcode'] ?? "",
+    headcode: _asString(json['leg_headcode']),
-    driving: json['leg_driving'],
+    driving: _asInt(json['leg_driving']),
-    user: json['leg_user'],
+    user: _asString(json['leg_user']),
-    locos: (json['locos'] as List)
+    locos: (json['locos'] is List ? (json['locos'] as List) : const [])
-        .map((e) => Loco.fromJson(e as Map<String, dynamic>))
+        .whereType<Map>()
+        .map((e) => Loco.fromJson(Map<String, dynamic>.from(e)))
         .toList(),
   );
 }
@@ -458,10 +595,10 @@ class Station {
   });
 
   factory Station.fromJson(Map<String, dynamic> json) => Station(
-    id: json['id'],
+    id: _asInt(json['id']),
-    name: json['name'],
+    name: _asString(json['name']),
-    network: json['network'],
+    network: _asString(json['network']),
-    country: json['country'],
+    country: _asString(json['country']),
   );
 }
 

lib/services/apiService.dart

@@ -1,106 +0,0 @@
-import 'dart:convert';
-import 'package:http/http.dart' as http;
-
-typedef TokenProvider = String? Function();
-typedef UnauthorizedHandler = Future<void> Function();
-
-class ApiService {
-  final String baseUrl;
-  TokenProvider? _getToken;
-  UnauthorizedHandler? _onUnauthorized;
-
-  ApiService({required this.baseUrl});
-
-  void setTokenProvider(TokenProvider provider) {
-    _getToken = provider;
-  }
-
-  void setUnauthorizedHandler(UnauthorizedHandler handler) {
-    _onUnauthorized = handler;
-  }
-
-  Map<String, String> _buildHeaders(Map<String, String>? extra) {
-    final token = _getToken?.call();
-    final headers = {'accept': 'application/json', ...?extra};
-    if (token != null && token.isNotEmpty) {
-      headers['Authorization'] = 'Bearer $token';
-    }
-    return headers;
-  }
-
-  Future<dynamic> get(String endpoint, {Map<String, String>? headers}) async {
-    final response = await http.get(
-      Uri.parse('$baseUrl$endpoint'),
-      headers: _buildHeaders(headers),
-    );
-    return _processResponse(response);
-  }
-
-  Future<dynamic> post(
-    String endpoint,
-    dynamic data, {
-    Map<String, String>? headers,
-  }) async {
-    final hasBody = data != null;
-    final response = await http.post(
-      Uri.parse('$baseUrl$endpoint'),
-      headers: _buildHeaders(hasBody ? _jsonHeaders(headers) : headers),
-      body: hasBody ? jsonEncode(data) : null,
-    );
-    return _processResponse(response);
-  }
-
-  Future<dynamic> postForm(String endpoint, Map<String, String> data) async {
-    final response = await http.post(
-      Uri.parse('$baseUrl$endpoint'),
-      headers: _buildHeaders({
-        'Content-Type': 'application/x-www-form-urlencoded',
-        'accept': 'application/json',
-      }),
-      body: data, // http package handles form-encoding for Map<String, String>
-    );
-    return _processResponse(response);
-  }
-
-  Future<dynamic> put(
-    String endpoint,
-    dynamic data, {
-    Map<String, String>? headers,
-  }) async {
-    final hasBody = data != null;
-    final response = await http.put(
-      Uri.parse('$baseUrl$endpoint'),
-      headers: _buildHeaders(hasBody ? _jsonHeaders(headers) : headers),
-      body: hasBody ? jsonEncode(data) : null,
-    );
-    return _processResponse(response);
-  }
-
-  Future<dynamic> delete(
-    String endpoint, {
-    Map<String, String>? headers,
-  }) async {
-    final response = await http.delete(
-      Uri.parse('$baseUrl$endpoint'),
-      headers: _buildHeaders(headers),
-    );
-    return _processResponse(response);
-  }
-
-  Map<String, String> _jsonHeaders(Map<String, String>? extra) {
-    return {'Content-Type': 'application/json', if (extra != null) ...extra};
-  }
-
-  Future<dynamic> _processResponse(http.Response res) async {
-    final body = res.body.isNotEmpty ? jsonDecode(res.body) : null;
-    if (res.statusCode >= 200 && res.statusCode < 300) {
-      return body;
-    }
-
-    if (res.statusCode == 401 && _onUnauthorized != null) {
-      await _onUnauthorized!();
-    }
-
-    throw Exception('API error ${res.statusCode}: $body');
-  }
-}

lib/services/api_service.dart

@@ -0,0 +1,145 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+
+typedef TokenProvider = String? Function();
+typedef UnauthorizedHandler = Future<void> Function();
+
+class ApiService {
+  final String baseUrl;
+  final http.Client _client;
+  final Duration timeout;
+  TokenProvider? _getToken;
+  UnauthorizedHandler? _onUnauthorized;
+
+  ApiService({
+    required this.baseUrl,
+    http.Client? client,
+    this.timeout = const Duration(seconds: 30),
+  }) : _client = client ?? http.Client();
+
+  void setTokenProvider(TokenProvider provider) {
+    _getToken = provider;
+  }
+
+  void setUnauthorizedHandler(UnauthorizedHandler handler) {
+    _onUnauthorized = handler;
+  }
+
+  void dispose() {
+    _client.close();
+  }
+
+  Map<String, String> _buildHeaders(Map<String, String>? extra) {
+    final token = _getToken?.call();
+    final headers = {'accept': 'application/json', ...?extra};
+    if (token != null && token.isNotEmpty) {
+      headers['Authorization'] = 'Bearer $token';
+    }
+    return headers;
+  }
+
+  Future<dynamic> get(String endpoint, {Map<String, String>? headers}) async {
+    final response = await _client
+        .get(
+          Uri.parse('$baseUrl$endpoint'),
+          headers: _buildHeaders(headers),
+        )
+        .timeout(timeout);
+    return _processResponse(response);
+  }
+
+  Future<dynamic> post(
+    String endpoint,
+    dynamic data, {
+    Map<String, String>? headers,
+  }) async {
+    final hasBody = data != null;
+    final response = await _client
+        .post(
+          Uri.parse('$baseUrl$endpoint'),
+          headers: _buildHeaders(hasBody ? _jsonHeaders(headers) : headers),
+          body: hasBody ? jsonEncode(data) : null,
+        )
+        .timeout(timeout);
+    return _processResponse(response);
+  }
+
+  Future<dynamic> postForm(String endpoint, Map<String, String> data) async {
+    final response = await _client
+        .post(
+          Uri.parse('$baseUrl$endpoint'),
+          headers: _buildHeaders({
+            'Content-Type': 'application/x-www-form-urlencoded',
+            'accept': 'application/json',
+          }),
+          body: data, // http package handles form-encoding for Map<String, String>
+        )
+        .timeout(timeout);
+    return _processResponse(response);
+  }
+
+  Future<dynamic> put(
+    String endpoint,
+    dynamic data, {
+    Map<String, String>? headers,
+  }) async {
+    final hasBody = data != null;
+    final response = await _client
+        .put(
+          Uri.parse('$baseUrl$endpoint'),
+          headers: _buildHeaders(hasBody ? _jsonHeaders(headers) : headers),
+          body: hasBody ? jsonEncode(data) : null,
+        )
+        .timeout(timeout);
+    return _processResponse(response);
+  }
+
+  Future<dynamic> delete(
+    String endpoint, {
+    Map<String, String>? headers,
+  }) async {
+    final response = await _client
+        .delete(
+          Uri.parse('$baseUrl$endpoint'),
+          headers: _buildHeaders(headers),
+        )
+        .timeout(timeout);
+    return _processResponse(response);
+  }
+
+  Map<String, String> _jsonHeaders(Map<String, String>? extra) {
+    return {'Content-Type': 'application/json', if (extra != null) ...extra};
+  }
+
+  Future<dynamic> _processResponse(http.Response res) async {
+    final body = _decodeBody(res);
+    if (res.statusCode >= 200 && res.statusCode < 300) {
+      return body;
+    }
+
+    if (res.statusCode == 401 && _onUnauthorized != null) {
+      await _onUnauthorized!();
+    }
+
+    throw Exception('API error ${res.statusCode}: $body');
+  }
+
+  dynamic _decodeBody(http.Response res) {
+    if (res.body.isEmpty) return null;
+
+    final contentType = res.headers['content-type'] ?? '';
+    final shouldTryJson = contentType.contains('application/json') ||
+        contentType.contains('+json') ||
+        res.body.trimLeft().startsWith('{') ||
+        res.body.trimLeft().startsWith('[');
+
+    if (!shouldTryJson) return res.body;
+
+    try {
+      return jsonDecode(res.body);
+    } catch (_) {
+      // Avoid turning a server-side error body into a client-side crash.
+      return res.body;
+    }
+  }
+}

lib/services/authservice.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/foundation.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
-import 'package:mileograph_flutter/services/apiService.dart';
+import 'package:mileograph_flutter/services/api_service.dart';
-import 'package:mileograph_flutter/services/tokenStorageService.dart';
+import 'package:mileograph_flutter/services/token_storage_service.dart';
 
 class AuthService extends ChangeNotifier {
   final ApiService api;
@@ -9,15 +9,18 @@ class AuthService extends ChangeNotifier {
 
   final TokenStorageService _tokenStorage = TokenStorageService();
 
-  AuthService({required this.api});
+  AuthService({required this.api}) {
+    api.setTokenProvider(() => token);
+    api.setUnauthorizedHandler(handleTokenExpired);
+  }
 
   AuthenticatedUserData? _user;
 
   bool get isLoggedIn => _user != null;
-  String? get token => _user?.access_token;
+  String? get token => _user?.accessToken;
-  String? get userId => _user?.user_id;
+  String? get userId => _user?.userId;
   String? get username => _user?.username;
-  String? get fullName => _user?.full_name;
+  String? get fullName => _user?.fullName;
 
   void setLoginData({
     required String userId,
@@ -27,10 +30,10 @@ class AuthService extends ChangeNotifier {
     required String email,
   }) {
     _user = AuthenticatedUserData(
-      user_id: userId,
+      userId: userId,
       username: username,
-      full_name: fullName,
+      fullName: fullName,
-      access_token: accessToken,
+      accessToken: accessToken,
       email: email,
     );
     _persistToken(accessToken);

lib/services/data_service.dart

@@ -0,0 +1,2 @@
+export 'data_service/data_service.dart';
+

lib/services/data_service/data_service.dart

@@ -0,0 +1,12 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/scheduler.dart';
+import 'package:mileograph_flutter/objects/objects.dart';
+import 'package:mileograph_flutter/services/api_service.dart';
+
+part 'data_service_core.dart';
+part 'data_service_traction.dart';
+part 'data_service_trips.dart';
+

lib/services/data_service/data_service_core.dart

@@ -1,10 +1,4 @@
-import 'dart:async';
+part of 'data_service.dart';
-import 'dart:convert';
-
-import 'package:flutter/foundation.dart';
-import 'package:flutter/scheduler.dart';
-import 'package:mileograph_flutter/objects/objects.dart';
-import 'package:mileograph_flutter/services/apiService.dart'; // assumes you've moved HomepageStats + submodels to a separate file
 
 class _LegFetchOptions {
   final int limit;
@@ -50,6 +44,10 @@ class DataService extends ChangeNotifier {
   bool get isTractionLoading => _isTractionLoading;
   bool _tractionHasMore = false;
   bool get tractionHasMore => _tractionHasMore;
+  List<LocoChange> _latestLocoChanges = [];
+  List<LocoChange> get latestLocoChanges => _latestLocoChanges;
+  bool _isLatestLocoChangesLoading = false;
+  bool get isLatestLocoChangesLoading => _isLatestLocoChangesLoading;
   final Map<int, List<LocoAttrVersion>> _locoTimelines = {};
   final Map<int, bool> _isLocoTimelineLoading = {};
   List<LocoAttrVersion> timelineForLoco(int locoId) =>
@@ -76,6 +74,7 @@ class DataService extends ChangeNotifier {
   // Station Data
   List<Station>? _cachedStations;
   DateTime? _stationsFetchedAt;
+  Future<List<Station>>? _stationsInFlight;
 
   List<String> stations = [""];
 
@@ -153,7 +152,8 @@ class DataService extends ChangeNotifier {
       if (json is List) {
         final newLegs = json.map((e) => Leg.fromJson(e)).toList();
         _legs = append ? [..._legs, ...newLegs] : newLegs;
-        _legsHasMore = newLegs.length >= limit;
+        // Keep "load more" available as long as the server returns items; hide only on empty.
+        _legsHasMore = newLegs.isNotEmpty;
       } else {
         throw Exception('Unexpected legs response: $json');
       }
@@ -177,103 +177,35 @@ class DataService extends ChangeNotifier {
     );
   }
 
-  Future<void> fetchHadTraction({int offset = 0, int limit = 100}) async {
+  Future<List<Leg>> fetchLegsForLoco(
-    await fetchTraction(
+    int locoId, {
-      hadOnly: true,
+    bool includeNonPowering = false,
-      offset: offset,
-      limit: limit,
-      append: offset > 0,
-    );
-  }
-
-  Future<void> fetchTraction({
-    bool hadOnly = false,
-    int offset = 0,
-    int limit = 50,
-    String? locoClass,
-    String? locoNumber,
-    bool mileageFirst = true,
-    bool append = false,
-    Map<String, dynamic>? filters,
   }) async {
-    _isTractionLoading = true;
+    if (locoId <= 0) return [];
-
+    final params =
+        includeNonPowering ? '?include_non_powering=true' : '';
     try {
-      final params = StringBuffer('?limit=$limit&offset=$offset');
+      final json = await api.get('/legs/by-loco/$locoId$params');
-      if (hadOnly) params.write('&had_only=true');
+      dynamic list = json;
-      if (!mileageFirst) params.write('&mileage_first=false');
+      if (json is Map) {
-
+        for (final key in ['legs', 'data', 'results']) {
-      final payload = <String, dynamic>{};
+          if (json[key] is List) {
-      if (locoClass != null && locoClass.isNotEmpty) {
+            list = json[key];
-        payload['class'] = locoClass;
+            break;
+          }
+        }
       }
-      if (locoNumber != null && locoNumber.isNotEmpty) {
+      if (list is List) {
-        payload['number'] = locoNumber;
+        return list
+            .whereType<Map>()
+            .map((e) => Leg.fromJson(Map<String, dynamic>.from(e)))
+            .toList();
       }
-      if (filters != null) {
+      debugPrint('Unexpected loco legs response: $json');
-        filters.forEach((key, value) {
-          if (value == null) return;
-          if (value is String && value.trim().isEmpty) return;
-          payload[key] = value;
-        });
-      }
-
-      final json = await api.post(
-        '/locos/search/v2${params.toString()}',
-        payload.isEmpty ? null : payload,
-      );
-
-      if (json is List) {
-        final newItems = json.map((e) => LocoSummary.fromJson(e)).toList();
-        _traction = append ? [..._traction, ...newItems] : newItems;
-        _tractionHasMore = newItems.length >= limit - 1;
-      } else {
-        throw Exception('Unexpected traction response: $json');
-      }
-    } catch (e) {
-      debugPrint('Failed to fetch traction: $e');
-      if (!append) {
-        _traction = [];
-      }
-      _tractionHasMore = false;
-    } finally {
-      _isTractionLoading = false;
-      _notifyAsync();
-    }
-  }
-
-  Future<List<LocoAttrVersion>> fetchLocoTimeline(int locoId) async {
-    _isLocoTimelineLoading[locoId] = true;
-    _notifyAsync();
-    try {
-      final json = await api.get('/loco/get-timeline/$locoId');
-      final timeline = LocoAttrVersion.fromGroupedJson(json);
-      _locoTimelines[locoId] = timeline;
-      return timeline;
-    } catch (e) {
-      debugPrint('Failed to fetch loco timeline for $locoId: $e');
-      _locoTimelines[locoId] = [];
       return [];
-    } finally {
-      _isLocoTimelineLoading[locoId] = false;
-      _notifyAsync();
-    }
-  }
-
-  Future<dynamic> createLoco(Map<String, dynamic> payload) async {
-    try {
-      final response = await api.put('/loco/new', payload);
-      final locoClass = payload['class']?.toString();
-      if (locoClass != null &&
-          locoClass.isNotEmpty &&
-          !_locoClasses.contains(locoClass)) {
-        _locoClasses = [..._locoClasses, locoClass];
-      }
-      _notifyAsync();
-      return response;
     } catch (e) {
-      debugPrint('Failed to create loco: $e');
+      debugPrint('Failed to fetch loco legs for $locoId: $e');
-      rethrow;
+      return [];
     }
   }
 
@@ -282,69 +214,44 @@ class DataService extends ChangeNotifier {
     final target = date ?? DateTime.now();
     final formatted =
         "${target.year.toString().padLeft(4, '0')}-${target.month.toString().padLeft(2, '0')}-${target.day.toString().padLeft(2, '0')}";
+    final endpoint = '/legs/on-this-day?date=$formatted';
+    dynamic json;
+    Object? lastError;
+    for (int attempt = 0; attempt < 2; attempt++) {
+      try {
+        json = await api.get(endpoint);
+        lastError = null;
+        break;
+      } catch (e) {
+        lastError = e;
+        if (!_looksLikeOnThisDayRoutingConflict(e)) break;
+        await Future<void>.delayed(const Duration(milliseconds: 250));
+      }
+    }
+
     try {
-      final json = await api.get('/legs/on-this-day?date=$formatted');
       if (json is List) {
         _onThisDay = json.map((e) => Leg.fromJson(e)).toList();
       } else {
         _onThisDay = [];
       }
     } catch (e) {
-      debugPrint('Failed to fetch on-this-day legs: $e');
+      lastError ??= e;
       _onThisDay = [];
     } finally {
+      if (lastError != null) {
+        debugPrint('Failed to fetch on-this-day legs ($endpoint): $lastError');
+      }
       _isOnThisDayLoading = false;
       _notifyAsync();
     }
   }
 
-  Future<void> fetchTripDetails() async {
+  bool _looksLikeOnThisDayRoutingConflict(Object error) {
-    _isTripDetailsLoading = true;
+    final msg = error.toString();
-    try {
+    return msg.contains('API error 422') &&
-      final json = await api.get('/trips/legs-and-stats');
+        msg.contains('[path, loco_id]') &&
-      if (json is List) {
+        msg.contains('input: on-this-day');
-        final tripMap = json.map((e) => TripDetail.fromJson(e)).toList();
-        _tripDetails = [...tripMap]..sort((a, b) => b.id.compareTo(a.id));
-      } else {
-        _tripDetails = [];
-      }
-    } catch (e) {
-      debugPrint('Failed to fetch trip_map: $e');
-      _tripDetails = [];
-    } finally {
-      _isTripDetailsLoading = false;
-      _notifyAsync();
-    }
-  }
-
-  Future<List<TripLocoStat>> fetchTripLocoStats(int tripId) async {
-    try {
-      final json = await api.get('/trips/stats/$tripId');
-      return _parseTripLocoStats(json);
-    } catch (e) {
-      debugPrint('Failed to fetch trip loco stats: $e');
-      return [];
-    }
-  }
-
-  List<TripLocoStat> _parseTripLocoStats(dynamic json) {
-    List<dynamic>? list;
-    if (json is List) {
-      list = json.expand((e) => e is List ? e : [e]).toList();
-    } else if (json is Map) {
-      for (final key in ['locos', 'stats', 'data', 'trip_locos']) {
-        final candidate = json[key];
-        if (candidate is List) {
-          list = candidate.expand((e) => e is List ? e : [e]).toList();
-          break;
-        }
-      }
-    }
-    if (list == null) return [];
-    return list
-        .whereType<Map<String, dynamic>>()
-        .map((e) => TripLocoStat.fromJson(e))
-        .toList();
   }
 
   Future<void> fetchEventFields({bool force = false}) async {
@@ -394,54 +301,6 @@ class DataService extends ChangeNotifier {
     return [];
   }
 
-  Future<void> fetchTrips() async {
-    try {
-      final json = await api.get('/trips/mileage');
-      Iterable<dynamic>? raw;
-      if (json is List) {
-        raw = json;
-      } else if (json is Map) {
-        for (final key in ['trips', 'trip_data', 'data']) {
-          final value = json[key];
-          if (value is List) {
-            raw = value;
-            break;
-          }
-        }
-      }
-      if (raw != null) {
-        final tripMap = raw
-            .whereType<Map<String, dynamic>>()
-            .map((e) => TripSummary.fromJson(e))
-            .toList();
-
-        _tripList = [...tripMap]..sort((a, b) => b.tripId.compareTo(a.tripId));
-      } else {
-        debugPrint('Unexpected trip list response: $json');
-        _tripList = [];
-      }
-    } catch (e) {
-      debugPrint('Failed to fetch trip list: $e');
-      _tripList = [];
-    } finally {
-      _notifyAsync();
-    }
-  }
-
-  Future<List<String>> fetchClassList() async {
-    if (_locoClasses.isNotEmpty) return _locoClasses;
-    try {
-      final json = await api.get('/loco/classlist');
-      if (json is List) {
-        _locoClasses = json.map((e) => e.toString()).toList();
-        _notifyAsync();
-      }
-    } catch (e) {
-      debugPrint('Failed to fetch class list: $e');
-    }
-    return _locoClasses;
-  }
-
   Future<void> createLocoEvent({
     required int locoId,
     required String eventDate,
@@ -466,6 +325,17 @@ class DataService extends ChangeNotifier {
     }
   }
 
+  Future<void> deleteTimelineBlock({
+    required int blockId,
+  }) async {
+    try {
+      await api.delete('/event/delete/$blockId');
+    } catch (e) {
+      debugPrint('Failed to delete timeline block $blockId: $e');
+      rethrow;
+    }
+  }
+
   void clear() {
     _homepageStats = null;
     _legs = [];
@@ -475,6 +345,8 @@ class DataService extends ChangeNotifier {
     _eventFields = [];
     _locoTimelines.clear();
     _isLocoTimelineLoading.clear();
+    _latestLocoChanges = [];
+    _isLatestLocoChangesLoading = false;
     _notifyAsync();
   }
 
@@ -503,12 +375,27 @@ class DataService extends ChangeNotifier {
       return _cachedStations!;
     }
 
-    final response = await api.get('/location');
+    if (_stationsInFlight != null) return _stationsInFlight!;
-    final parsed = (response as List).map((e) => Station.fromJson(e)).toList();
 
-    _cachedStations = parsed;
+    _stationsInFlight = () async {
-    _stationsFetchedAt = now;
+      try {
+        final response = await api.get('/location');
+        if (response is! List) return const <Station>[];
+        final parsed = response
+            .whereType<Map>()
+            .map((e) => Station.fromJson(Map<String, dynamic>.from(e)))
+            .toList();
+        _cachedStations = parsed;
+        _stationsFetchedAt = now;
+        return parsed;
+      } catch (e) {
+        debugPrint('Failed to fetch stations: $e');
+        return const <Station>[];
+      } finally {
+        _stationsInFlight = null;
+      }
+    }();
 
-    return parsed;
+    return _stationsInFlight!;
   }
 }

lib/services/data_service/data_service_traction.dart

@@ -0,0 +1,153 @@
+part of 'data_service.dart';
+
+extension DataServiceTraction on DataService {
+  Future<void> fetchHadTraction({int offset = 0, int limit = 100}) async {
+    await fetchTraction(
+      hadOnly: true,
+      offset: offset,
+      limit: limit,
+      append: offset > 0,
+    );
+  }
+
+  Future<void> fetchTraction({
+    bool hadOnly = false,
+    int offset = 0,
+    int limit = 50,
+    String? locoClass,
+    String? locoNumber,
+    bool mileageFirst = true,
+    bool append = false,
+    Map<String, dynamic>? filters,
+  }) async {
+    _isTractionLoading = true;
+
+    try {
+      final params = StringBuffer('?limit=$limit&offset=$offset');
+      if (hadOnly) params.write('&had_only=true');
+      if (!mileageFirst) params.write('&mileage_first=false');
+
+      final payload = <String, dynamic>{};
+      if (locoClass != null && locoClass.isNotEmpty) {
+        payload['class'] = locoClass;
+      }
+      if (locoNumber != null && locoNumber.isNotEmpty) {
+        payload['number'] = locoNumber;
+      }
+      if (filters != null) {
+        filters.forEach((key, value) {
+          if (value == null) return;
+          if (value is String && value.trim().isEmpty) return;
+          payload[key] = value;
+        });
+      }
+
+      final json = await api.post(
+        '/locos/search/v2${params.toString()}',
+        payload.isEmpty ? null : payload,
+      );
+
+      if (json is List) {
+        final newItems = json.map((e) => LocoSummary.fromJson(e)).toList();
+        _traction = append ? [..._traction, ...newItems] : newItems;
+        _tractionHasMore = newItems.length >= limit - 1;
+      } else {
+        throw Exception('Unexpected traction response: $json');
+      }
+    } catch (e) {
+      debugPrint('Failed to fetch traction: $e');
+      if (!append) {
+        _traction = [];
+      }
+      _tractionHasMore = false;
+    } finally {
+      _isTractionLoading = false;
+      _notifyAsync();
+    }
+  }
+
+  Future<List<LocoAttrVersion>> fetchLocoTimeline(int locoId) async {
+    _isLocoTimelineLoading[locoId] = true;
+    _notifyAsync();
+    try {
+      final json = await api.get('/loco/get-timeline/$locoId');
+      final timeline = LocoAttrVersion.fromGroupedJson(json);
+      _locoTimelines[locoId] = timeline;
+      return timeline;
+    } catch (e) {
+      debugPrint('Failed to fetch loco timeline for $locoId: $e');
+      _locoTimelines[locoId] = [];
+      return [];
+    } finally {
+      _isLocoTimelineLoading[locoId] = false;
+      _notifyAsync();
+    }
+  }
+
+  Future<dynamic> createLoco(Map<String, dynamic> payload) async {
+    try {
+      final response = await api.put('/loco/new', payload);
+      final locoClass = payload['class']?.toString();
+      if (locoClass != null &&
+          locoClass.isNotEmpty &&
+          !_locoClasses.contains(locoClass)) {
+        _locoClasses = [..._locoClasses, locoClass];
+      }
+      _notifyAsync();
+      return response;
+    } catch (e) {
+      debugPrint('Failed to create loco: $e');
+      rethrow;
+    }
+  }
+
+  Future<List<String>> fetchClassList() async {
+    if (_locoClasses.isNotEmpty) return _locoClasses;
+    try {
+      final json = await api.get('/loco/classlist');
+      if (json is List) {
+        _locoClasses = json.map((e) => e.toString()).toList();
+        _notifyAsync();
+      }
+    } catch (e) {
+      debugPrint('Failed to fetch class list: $e');
+    }
+    return _locoClasses;
+  }
+
+  Future<void> fetchLatestLocoChanges({int limit = 25, int offset = 0}) async {
+    _isLatestLocoChangesLoading = true;
+    _notifyAsync();
+    try {
+      final json =
+          await api.get('/loco/changes/latest?limit=$limit&offset=$offset');
+      dynamic results = json;
+      if (json is Map && json['data'] is List) {
+        results = json['data'];
+      }
+      if (results is List) {
+        final parsed = <LocoChange>[];
+        for (final item in results) {
+          if (item is Map<String, dynamic>) {
+            parsed.add(LocoChange.fromJson(item));
+          } else if (item is Map) {
+            parsed.add(
+              LocoChange.fromJson(
+                item.map((key, value) => MapEntry(key.toString(), value)),
+              ),
+            );
+          }
+        }
+        _latestLocoChanges = parsed;
+      } else {
+        throw Exception('Unexpected latest loco changes response: $json');
+      }
+    } catch (e) {
+      debugPrint('Failed to fetch latest loco changes: $e');
+      _latestLocoChanges = [];
+    } finally {
+      _isLatestLocoChangesLoading = false;
+      _notifyAsync();
+    }
+  }
+}

lib/services/data_service/data_service_trips.dart

@@ -0,0 +1,132 @@
+part of 'data_service.dart';
+
+extension DataServiceTrips on DataService {
+  Future<void> fetchTripDetails() async {
+    _isTripDetailsLoading = true;
+    try {
+      final json = await api.get('/trips/legs-and-stats');
+      if (json is List) {
+        final tripMap = json.map((e) => TripDetail.fromJson(e)).toList();
+        _tripDetails = [...tripMap]..sort((a, b) => b.id.compareTo(a.id));
+      } else {
+        _tripDetails = [];
+      }
+    } catch (e) {
+      debugPrint('Failed to fetch trip_map: $e');
+      _tripDetails = [];
+    } finally {
+      _isTripDetailsLoading = false;
+      _notifyAsync();
+    }
+  }
+
+  Future<List<TripLocoStat>> fetchTripLocoStats(int tripId) async {
+    try {
+      final json = await api.get('/trips/stats/$tripId');
+      return _parseTripLocoStats(json);
+    } catch (e) {
+      debugPrint('Failed to fetch trip loco stats: $e');
+      return [];
+    }
+  }
+
+  List<TripLocoStat> _parseTripLocoStats(dynamic json) {
+    List<dynamic>? list;
+    if (json is List) {
+      list = json.expand((e) => e is List ? e : [e]).toList();
+    } else if (json is Map) {
+      for (final key in ['locos', 'stats', 'data', 'trip_locos']) {
+        final candidate = json[key];
+        if (candidate is List) {
+          list = candidate.expand((e) => e is List ? e : [e]).toList();
+          break;
+        }
+      }
+    }
+    if (list == null) return [];
+    return list
+        .whereType<Map<String, dynamic>>()
+        .map((e) => TripLocoStat.fromJson(e))
+        .toList();
+  }
+
+  Future<void> fetchTrips() async {
+    try {
+      final json = await api.get('/trips/mileage');
+      Iterable<dynamic>? raw;
+      if (json is List) {
+        raw = json;
+      } else if (json is Map) {
+        for (final key in ['trips', 'trip_data', 'data']) {
+          final value = json[key];
+          if (value is List) {
+            raw = value;
+            break;
+          }
+        }
+      }
+      if (raw != null) {
+        final tripMap = raw
+            .whereType<Map<String, dynamic>>()
+            .map((e) => TripSummary.fromJson(e))
+            .toList();
+
+        _tripList = [...tripMap]..sort((a, b) => b.tripId.compareTo(a.tripId));
+      } else {
+        debugPrint('Unexpected trip list response: $json');
+        _tripList = [];
+      }
+    } catch (e) {
+      debugPrint('Failed to fetch trip list: $e');
+      _tripList = [];
+    } finally {
+      _notifyAsync();
+    }
+  }
+
+  Future<void> fetchTripOptions() async {
+    try {
+      final json = await api.get('/trips');
+      Iterable<dynamic>? raw;
+      if (json is List) {
+        raw = json;
+      } else if (json is Map) {
+        for (final key in ['trips', 'trip_data', 'data']) {
+          final value = json[key];
+          if (value is List) {
+            raw = value;
+            break;
+          }
+        }
+      }
+      if (raw != null) {
+        final tripMap = raw
+            .whereType<Map<String, dynamic>>()
+            .map((e) => TripSummary.fromJson(e))
+            .toList();
+
+        _tripList = [...tripMap]..sort((a, b) => b.tripId.compareTo(a.tripId));
+      } else {
+        debugPrint('Unexpected trip list response: $json');
+        _tripList = [];
+      }
+    } catch (e) {
+      debugPrint('Failed to fetch trip list: $e');
+      _tripList = [];
+    } finally {
+      _notifyAsync();
+    }
+  }
+
+  void upsertTripSummary(TripSummary trip) {
+    final existingIndex =
+        _tripList.indexWhere((element) => element.tripId == trip.tripId);
+    if (existingIndex >= 0) {
+      _tripList[existingIndex] = trip;
+    } else {
+      _tripList = [trip, ..._tripList];
+    }
+    _tripList.sort((a, b) => b.tripId.compareTo(a.tripId));
+    _notifyAsync();
+  }
+}

lib/services/navigation_guard.dart

@@ -7,9 +7,10 @@ class NavigationGuard {
     _callback = callback;
   }
 
-  static void unregister(NavigationGuardCallback callback) {
+  static void unregister([NavigationGuardCallback? callback]) {
-    if (_callback == callback) {
+    if (callback == null || identical(_callback, callback)) {
       _callback = null;
+      _promptActive = false;
     }
   }
 

lib/ui/app_shell.dart

@@ -0,0 +1,393 @@
+import 'package:dynamic_color/dynamic_color.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:go_router/go_router.dart';
+import 'package:mileograph_flutter/components/login/login.dart';
+import 'package:mileograph_flutter/components/pages/calculator.dart';
+import 'package:mileograph_flutter/components/pages/calculator_details.dart';
+import 'package:mileograph_flutter/components/pages/dashboard.dart';
+import 'package:mileograph_flutter/components/pages/legs.dart';
+import 'package:mileograph_flutter/components/pages/loco_legs.dart';
+import 'package:mileograph_flutter/components/pages/loco_timeline.dart';
+import 'package:mileograph_flutter/components/pages/new_entry.dart';
+import 'package:mileograph_flutter/components/pages/new_traction.dart';
+import 'package:mileograph_flutter/components/pages/traction.dart';
+import 'package:mileograph_flutter/components/pages/trips.dart';
+import 'package:mileograph_flutter/services/authservice.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:mileograph_flutter/services/navigation_guard.dart';
+import 'package:provider/provider.dart';
+
+final GlobalKey<NavigatorState> _shellNavigatorKey = GlobalKey<NavigatorState>();
+
+const List<String> _contentPages = [
+  "/",
+  "/calculator",
+  "/legs",
+  "/traction",
+  "/trips",
+  "/add",
+];
+
+const int _addTabIndex = 5;
+
+class _NavItem {
+  final String label;
+  final IconData icon;
+  const _NavItem(this.label, this.icon);
+}
+
+const List<_NavItem> _navItems = [
+  _NavItem("Home", Icons.home),
+  _NavItem("Calculator", Icons.route),
+  _NavItem("Entries", Icons.list),
+  _NavItem("Traction", Icons.train),
+  _NavItem("Trips", Icons.book),
+  _NavItem("Add", Icons.add),
+];
+
+int tabIndexForPath(String path) {
+  final newIndex = _contentPages.indexWhere((routePath) {
+    if (path == routePath) return true;
+    if (routePath == '/') return path == '/';
+    return path.startsWith('$routePath/');
+  });
+  return newIndex < 0 ? 0 : newIndex;
+}
+
+class MyApp extends StatefulWidget {
+  const MyApp({super.key});
+
+  @override
+  State<MyApp> createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  late final GoRouter _router;
+  bool _routerInitialized = false;
+
+  final ColorScheme defaultLight = ColorScheme.fromSeed(seedColor: Colors.red);
+  final ColorScheme defaultDark = ColorScheme.fromSeed(
+    seedColor: Colors.red,
+    brightness: Brightness.dark,
+  );
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    if (_routerInitialized) return;
+    _routerInitialized = true;
+    final auth = context.read<AuthService>();
+    _router = GoRouter(
+      refreshListenable: auth,
+      redirect: (context, state) {
+        final loggedIn = auth.isLoggedIn;
+        final loggingIn = state.uri.toString() == '/login';
+
+        if (!loggedIn && !loggingIn) return '/login';
+        if (loggedIn && loggingIn) return '/';
+        return null;
+      },
+      routes: [
+        ShellRoute(
+          navigatorKey: _shellNavigatorKey,
+          builder: (context, state, child) => MyHomePage(child: child),
+          routes: [
+            GoRoute(path: '/', builder: (context, state) => const Dashboard()),
+            GoRoute(
+              path: '/calculator',
+              builder: (context, state) => CalculatorPage(),
+            ),
+            GoRoute(
+              path: '/calculator/details',
+              builder: (context, state) =>
+                  CalculatorDetailsPage(result: state.extra),
+            ),
+            GoRoute(path: '/legs', builder: (context, state) => LegsPage()),
+            GoRoute(
+              path: '/traction',
+              builder: (context, state) => TractionPage(),
+            ),
+            GoRoute(
+              path: '/traction/:id/timeline',
+              builder: (_, state) {
+                final idParam = state.pathParameters['id'];
+                final locoId = int.tryParse(idParam ?? '') ?? 0;
+                final extra = state.extra;
+                String label = state.uri.queryParameters['label'] ?? '';
+                if (extra is Map && extra['label'] is String) {
+                  label = extra['label'] as String;
+                } else if (extra is String && extra.isNotEmpty) {
+                  label = extra;
+                }
+                if (label.trim().isEmpty) label = 'Loco $locoId';
+                return LocoTimelinePage(locoId: locoId, locoLabel: label);
+              },
+            ),
+            GoRoute(
+              path: '/traction/:id/legs',
+              builder: (_, state) {
+                final idParam = state.pathParameters['id'];
+                final locoId = int.tryParse(idParam ?? '') ?? 0;
+                final extra = state.extra;
+                String label = state.uri.queryParameters['label'] ?? '';
+                if (extra is Map && extra['label'] is String) {
+                  label = extra['label'] as String;
+                } else if (extra is String && extra.isNotEmpty) {
+                  label = extra;
+                }
+                if (label.trim().isEmpty) label = 'Loco $locoId';
+                return LocoLegsPage(locoId: locoId, locoLabel: label);
+              },
+            ),
+            GoRoute(
+              path: '/traction/new',
+              builder: (context, state) => const NewTractionPage(),
+            ),
+            GoRoute(path: '/trips', builder: (context, state) => TripsPage()),
+            GoRoute(path: '/add', builder: (context, state) => NewEntryPage()),
+            GoRoute(
+              path: '/legs/edit/:id',
+              builder: (_, state) {
+                final idParam = state.pathParameters['id'];
+                final legId = idParam == null ? null : int.tryParse(idParam);
+                return NewEntryPage(editLegId: legId);
+              },
+            ),
+          ],
+        ),
+        GoRoute(path: '/login', builder: (context, state) => const LoginScreen()),
+      ],
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return DynamicColorBuilder(
+      builder: (ColorScheme? lightDynamic, ColorScheme? darkDynamic) {
+        return MaterialApp.router(
+          title: 'Mileograph',
+          routerConfig: _router,
+          theme: ThemeData(
+            useMaterial3: true,
+            colorScheme: lightDynamic ?? defaultLight,
+          ),
+          darkTheme: ThemeData(
+            useMaterial3: true,
+            colorScheme: darkDynamic ?? defaultDark,
+          ),
+          themeMode: ThemeMode.system,
+        );
+      },
+    );
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  final Widget child;
+  const MyHomePage({super.key, required this.child});
+
+  @override
+  State<MyHomePage> createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  List<String> get contentPages => _contentPages;
+
+  Future<void> _onItemTapped(int index, int currentIndex) async {
+    if (index < 0 || index >= contentPages.length || index == currentIndex) {
+      return;
+    }
+    await NavigationGuard.attemptNavigation(() async {
+      if (!mounted) return;
+      context.go(contentPages[index]);
+    });
+  }
+
+  int? _lastTabIndex;
+  final List<int> _tabHistory = [];
+  bool _handlingBackNavigation = false;
+
+  bool _fetched = false;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+
+    if (_fetched) return;
+    _fetched = true;
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      Future(() async {
+        if (!mounted) return;
+        final data = context.read<DataService>();
+        final auth = context.read<AuthService>();
+        await auth.tryRestoreSession();
+        if (!auth.isLoggedIn) return;
+        data.fetchEventFields();
+        if (data.homepageStats == null) {
+          data.fetchHomepageStats();
+        }
+        if (data.legs.isEmpty) {
+          data.fetchLegs();
+        }
+        if (data.traction.isEmpty) {
+          data.fetchHadTraction();
+        }
+        if (data.latestLocoChanges.isEmpty) {
+          data.fetchLatestLocoChanges();
+        }
+        if (data.onThisDay.isEmpty) {
+          data.fetchOnThisDay();
+        }
+        if (data.tripDetails.isEmpty) {
+          data.fetchTripDetails();
+        }
+      });
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final uri = GoRouterState.of(context).uri;
+    final pageIndex = tabIndexForPath(uri.path);
+    _recordTabChange(pageIndex);
+    if (pageIndex != _addTabIndex) {
+      NavigationGuard.unregister();
+    }
+    final homepageReady = context.select<DataService, bool>(
+      (data) => data.homepageStats != null || !data.isHomepageLoading,
+    );
+    final auth = context.read<AuthService>();
+
+    final currentPage = homepageReady
+        ? widget.child
+        : const Center(child: CircularProgressIndicator());
+
+    return PopScope(
+      canPop: false,
+      onPopInvokedWithResult: (didPop, _) async {
+        if (didPop) return;
+
+        final shellNav = _shellNavigatorKey.currentState;
+        if (shellNav != null && shellNav.canPop()) {
+          shellNav.pop();
+          return;
+        }
+
+        if (_tabHistory.isNotEmpty) {
+          final previousTab = _tabHistory.removeLast();
+          if (!mounted) return;
+          _handlingBackNavigation = true;
+          context.go(contentPages[previousTab]);
+          return;
+        }
+
+        if (pageIndex != 0) {
+          if (!mounted) return;
+          _handlingBackNavigation = true;
+          context.go(contentPages[0]);
+          return;
+        }
+
+        SystemNavigator.pop();
+      },
+      child: LayoutBuilder(
+        builder: (context, constraints) {
+          final isWide = constraints.maxWidth >= 900;
+          final railExtended = constraints.maxWidth >= 1400;
+          final navRailDestinations = _navItems
+              .map(
+                (item) => NavigationRailDestination(
+                  icon: Icon(item.icon),
+                  label: Text(item.label),
+                ),
+              )
+              .toList();
+          final navBarDestinations = _navItems
+              .map(
+                (item) => NavigationDestination(
+                  icon: Icon(item.icon),
+                  label: item.label,
+                ),
+              )
+              .toList();
+
+          return Scaffold(
+            appBar: AppBar(
+              backgroundColor: Theme.of(context).colorScheme.inversePrimary,
+              title: Text.rich(
+                TextSpan(
+                  children: const [
+                    TextSpan(text: "Mile"),
+                    TextSpan(text: "O", style: TextStyle(color: Colors.red)),
+                    TextSpan(text: "graph"),
+                  ],
+                  style: const TextStyle(
+                    decoration: TextDecoration.none,
+                    color: Colors.white,
+                    fontFamily: "Tomatoes",
+                  ),
+                ),
+              ),
+              actions: [
+                const IconButton(
+                  onPressed: null,
+                  icon: Icon(Icons.account_circle),
+                ),
+                IconButton(onPressed: auth.logout, icon: const Icon(Icons.logout)),
+              ],
+            ),
+            bottomNavigationBar: isWide
+                ? null
+                : NavigationBar(
+                    selectedIndex: pageIndex,
+                    onDestinationSelected: (int index) =>
+                        _onItemTapped(index, pageIndex),
+                    destinations: navBarDestinations,
+                  ),
+            body: isWide
+                ? Row(
+                    children: [
+                      SafeArea(
+                        child: NavigationRail(
+                          selectedIndex: pageIndex,
+                          extended: railExtended,
+                          labelType: railExtended
+                              ? NavigationRailLabelType.none
+                              : NavigationRailLabelType.selected,
+                          onDestinationSelected: (int index) =>
+                              _onItemTapped(index, pageIndex),
+                          destinations: navRailDestinations,
+                        ),
+                      ),
+                      const VerticalDivider(width: 1),
+                      Expanded(child: currentPage),
+                    ],
+                  )
+                : currentPage,
+          );
+        },
+      ),
+    );
+  }
+
+  void _recordTabChange(int pageIndex) {
+    final last = _lastTabIndex;
+    if (last == null) {
+      _lastTabIndex = pageIndex;
+      return;
+    }
+    if (last == pageIndex) return;
+
+    if (_handlingBackNavigation) {
+      _handlingBackNavigation = false;
+      _lastTabIndex = pageIndex;
+      return;
+    }
+
+    if (_tabHistory.isEmpty || _tabHistory.last != last) {
+      _tabHistory.add(last);
+    }
+    _lastTabIndex = pageIndex;
+  }
+}

pubspec.lock

@@ -66,7 +66,7 @@ packages:
     source: hosted
     version: "1.1.2"
   collection:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: collection
       sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 0.2.0+1
+version: 0.3.0+1
 
 environment:
   sdk: ^3.8.1
@@ -36,6 +36,7 @@ dependencies:
   provider: ^6.1.5
   dynamic_color: ^1.6.6
   flutter_secure_storage: ^10.0.0
+  collection: ^1.18.0
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.

test/app_shell_test.dart

@@ -0,0 +1,20 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mileograph_flutter/ui/app_shell.dart';
+
+void main() {
+  test('tabIndexForPath maps nested routes', () {
+    expect(tabIndexForPath('/'), 0);
+    expect(tabIndexForPath('/calculator'), 1);
+    expect(tabIndexForPath('/calculator/details'), 1);
+    expect(tabIndexForPath('/legs'), 2);
+    expect(tabIndexForPath('/traction/12/timeline'), 3);
+    expect(tabIndexForPath('/trips'), 4);
+    expect(tabIndexForPath('/add'), 5);
+  });
+
+  test('tabIndexForPath ignores query when parsing uri', () {
+    expect(tabIndexForPath(Uri.parse('/trips?sort=desc').path), 4);
+    expect(tabIndexForPath(Uri.parse('/calculator/details?x=1').path), 1);
+  });
+}
+

test/widget_test.dart

@@ -1,30 +1,18 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility in the flutter_test package. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
-
+import 'package:mileograph_flutter/app.dart';
-import 'package:mileograph_flutter/main.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
+  TestWidgetsFlutterBinding.ensureInitialized();
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(MyApp());
 
-    // Verify that our counter starts at 0.
+  setUp(() {
-    expect(find.text('0'), findsOneWidget);
+    SharedPreferences.setMockInitialValues({});
-    expect(find.text('1'), findsNothing);
+  });
 
-    // Tap the '+' icon and trigger a frame.
+  testWidgets('Shows login UI when logged out', (WidgetTester tester) async {
-    await tester.tap(find.byIcon(Icons.add));
+    await tester.pumpWidget(const App());
-    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
 
-    // Verify that our counter has incremented.
+    expect(find.text('Login'), findsWidgets);
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
   });
 }