add event update panel

.gitea/workflows/release.yml

@@ -19,6 +19,7 @@ jobs:
       - mileograph
     outputs:
       base_version: ${{ steps.meta.outputs.base }}
+      release_tag: ${{ steps.meta.outputs.release_tag }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -29,6 +30,7 @@ jobs:
           RAW_VERSION=$(awk '/^version:/{print $2}' pubspec.yaml)
           BASE_VERSION=${RAW_VERSION%%+*}
           echo "base=${BASE_VERSION}" >> "$GITHUB_OUTPUT"
+          echo "release_tag=v${BASE_VERSION}" >> "$GITHUB_OUTPUT"
 
   android-build:
     runs-on:
@@ -308,7 +310,7 @@ jobs:
         id: bundle
         run: |
           BASE="${{ needs.meta.outputs.base_version }}"
-          TAG="v${BASE}"
+          TAG="${{ needs.meta.outputs.release_tag }}"
 
           echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
           echo "apk=artifacts/mileograph-${BASE}.apk" >> "$GITHUB_OUTPUT"

lib/components/calculator/calculator.dart

@@ -97,10 +97,16 @@ class _StationAutocompleteState extends State<StationAutocomplete> {
 }
 
 class RouteCalculator extends StatefulWidget {
-  const RouteCalculator({super.key, this.onDistanceComputed, this.onApplyRoute});
+  const RouteCalculator({
+    super.key,
+    this.onDistanceComputed,
+    this.onApplyRoute,
+    this.initialStations,
+  });
 
   final ValueChanged<double>? onDistanceComputed;
   final ValueChanged<RouteResult>? onApplyRoute;
+  final List<String>? initialStations;
 
   @override
   State<RouteCalculator> createState() => _RouteCalculatorState();
@@ -122,6 +128,9 @@ class _RouteCalculatorState extends State<RouteCalculator> {
     super.didChangeDependencies();
     if (!_fetched) {
       _fetched = true;
+      if (widget.initialStations != null && widget.initialStations!.isNotEmpty) {
+        context.read<DataService>().stations = List.from(widget.initialStations!);
+      }
       WidgetsBinding.instance.addPostFrameCallback((_) async {
         final data = context.read<DataService>();
         final result = await data.fetchStations();

lib/components/pages/new_entry.dart

@@ -51,7 +51,8 @@ class _NewEntryPageState extends State<NewEntryPage> {
   String? _activeDraftId;
 
   bool get _isEditing => widget.editLegId != null;
-  bool get _draftPersistenceEnabled => false; // legacy single draft disabled in favor of draft list
+  bool get _draftPersistenceEnabled =>
+      false; // legacy single draft disabled in favor of draft list
 
   @override
   void initState() {
@@ -266,8 +267,8 @@ class _NewEntryPageState extends State<NewEntryPage> {
       if (json is! Map<String, dynamic>) {
         throw Exception('Unexpected response for leg $legId');
       }
-      final beginTime = DateTime.tryParse(json['leg_begin_time'] ?? '') ??
-          _selectedDate;
+      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;
@@ -297,13 +298,14 @@ class _NewEntryPageState extends State<NewEntryPage> {
         _routeResult = routeResult;
         _startController.text = json['leg_start'] ?? '';
         _endController.text = json['leg_end'] ?? '';
-        _headcodeController.text =
-            (json['leg_headcode'] as String? ?? '').toUpperCase();
+        _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);
+        _networkController.text = (json['leg_network'] as String? ?? '')
+            .toUpperCase();
+        _mileageController.text = mileageVal == 0
+            ? ''
+            : mileageVal.toStringAsFixed(2);
         _tractionItems
           ..clear()
           ..addAll(tractionItems);
@@ -317,9 +319,9 @@ class _NewEntryPageState extends State<NewEntryPage> {
       setState(() {
         _loadError = 'Failed to load entry: $e';
       });
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text('Failed to load entry: $e')),
-      );
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text('Failed to load entry: $e')));
     } finally {
       _restoringDraft = false;
       if (mounted) {
@@ -394,10 +396,7 @@ class _NewEntryPageState extends State<NewEntryPage> {
   _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,
-    );
+    return _TractionItem(loco: LocoSummary.fromJson(loco), powering: powering);
   }
 
   DateTime get _legDateTime => DateTime(
@@ -452,20 +451,11 @@ class _NewEntryPageState extends State<NewEntryPage> {
 
   bool _draftChangedFromBaseline() {
     if (_loadedDraftSnapshot == null) return true;
-    final current = _normalizeDraftSnapshot(
-      _buildDraftSnapshot(
+    final current = _buildDraftSnapshot(
       id: _activeDraftId ?? 'temp',
       includeTimestamp: false,
-      ),
     );
-    final baseline = _normalizeDraftSnapshot(_loadedDraftSnapshot!);
-    return !_snapshotEquality.equals(baseline, current);
-  }
-
-  Map<String, dynamic> _normalizeDraftSnapshot(Map<String, dynamic> snapshot) {
-    final normalized = Map<String, dynamic>.from(snapshot);
-    normalized.remove('saved_at');
-    return normalized;
+    return !_snapshotEquality.equals(_loadedDraftSnapshot, current);
   }
 
   bool _formIsEmpty() {
@@ -487,8 +477,9 @@ class _NewEntryPageState extends State<NewEntryPage> {
       useRootNavigator: false,
       builder: (_) => AlertDialog(
         title: const Text('Save draft?'),
-        content:
-            const Text('Do you want to save this entry as a draft before leaving?'),
+        content: const Text(
+          'Do you want to save this entry as a draft before leaving?',
+        ),
         actions: [
           TextButton(
             onPressed: () => Navigator.of(context).pop(_ExitChoice.discard),
@@ -637,11 +628,11 @@ class _NewEntryPageState extends State<NewEntryPage> {
       if (!mounted) return;
       context.read<DataService>().refreshLegs();
       if (!mounted) return;
-      ScaffoldMessenger.of(
-        context,
-      ).showSnackBar(
+      ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(
-          content: Text(isEditingExisting ? 'Entry updated' : 'Entry submitted'),
+          content: Text(
+            isEditingExisting ? 'Entry updated' : 'Entry submitted',
+          ),
         ),
       );
       _lastSubmittedSnapshot = snapshot;
@@ -816,8 +807,7 @@ class _NewEntryPageState extends State<NewEntryPage> {
       jsonEncode(drafts.map((e) => e.toJson()).toList()),
     );
     _activeDraftId = id;
-    _loadedDraftSnapshot =
-        _normalizeDraftSnapshot(_buildDraftSnapshot(id: id, includeTimestamp: false));
+    _loadedDraftSnapshot = _buildDraftSnapshot(id: id, includeTimestamp: false);
     return id;
   }
 
@@ -882,11 +872,14 @@ class _NewEntryPageState extends State<NewEntryPage> {
     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 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 beginTime = beginStr == null
+        ? DateTime.now()
+        : DateTime.tryParse(beginStr) ?? DateTime.now();
     final tripRaw = payload['leg_trip'];
     final tripId = tripRaw is num ? tripRaw.toInt() : null;
 
@@ -894,7 +887,9 @@ class _NewEntryPageState extends State<NewEntryPage> {
     RouteResult? restoredRouteResult;
     if (!useManual) {
       if (payload['leg_route'] is List) {
-        routeStations = (payload['leg_route'] as List).map((e) => e.toString()).toList();
+        routeStations = (payload['leg_route'] as List)
+            .map((e) => e.toString())
+            .toList();
       }
       final rr = data['routeResult'];
       if (rr is Map<String, dynamic>) {
@@ -903,10 +898,17 @@ class _NewEntryPageState extends State<NewEntryPage> {
               (rr['input_route'] as List?)?.map((e) => e.toString()).toList() ??
               routeStations,
           calculatedRoute:
-              (rr['calculated_route'] as List?)?.map((e) => e.toString()).toList() ??
+              (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() ??
+          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,
         );
@@ -927,21 +929,26 @@ class _NewEntryPageState extends State<NewEntryPage> {
       _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();
+      _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);
+        _mileageController.text = miles == null || miles == 0
+            ? ''
+            : miles.toStringAsFixed(2);
       } else {
-        _startController.text = routeStations.isNotEmpty ? routeStations.first : '';
-        _endController.text = routeStations.isNotEmpty ? routeStations.last : '';
+        _startController.text = routeStations.isNotEmpty
+            ? routeStations.first
+            : '';
+        _endController.text = routeStations.isNotEmpty
+            ? routeStations.last
+            : '';
         final dist = _routeResult?.distance ?? 0;
         _mileageController.text = dist == 0 ? '' : dist.toStringAsFixed(2);
       }
@@ -964,11 +971,9 @@ class _NewEntryPageState extends State<NewEntryPage> {
     });
     final baselineId =
         _activeDraftId ?? data['id']?.toString() ?? DateTime.now().toString();
-    _loadedDraftSnapshot = _normalizeDraftSnapshot(
-      _buildDraftSnapshot(
+    _loadedDraftSnapshot = _buildDraftSnapshot(
       id: baselineId,
       includeTimestamp: false,
-      ),
     );
     _restoringDraft = false;
   }
@@ -1072,8 +1077,9 @@ class _NewEntryPageState extends State<NewEntryPage> {
                       minimumSize: const Size(0, 36),
                       tapTargetSize: MaterialTapTargetSize.shrinkWrap,
                     ),
-                    onPressed:
-                        _submitting ? null : () => _resetFormState(clearDraft: true),
+                    onPressed: _submitting
+                        ? null
+                        : () => _resetFormState(clearDraft: true),
                     icon: const Icon(Icons.clear, size: 16),
                     label: const Text('Clear form'),
                   ),
@@ -1444,18 +1450,15 @@ class _StoredDraft {
   final DateTime savedAt;
   final Map<String, dynamic> data;
 
-  _StoredDraft({
-    required this.id,
-    required this.savedAt,
-    required this.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() ??
+      id:
+          json['id']?.toString() ??
           embeddedId ??
           savedAt.microsecondsSinceEpoch.toString(),
       savedAt: savedAt,
@@ -1464,11 +1467,7 @@ class _StoredDraft {
   }
 
   Map<String, dynamic> toJson() {
-    return {
-      "id": id,
-      "saved_at": savedAt.toIso8601String(),
-      "data": data,
-    };
+    return {"id": id, "saved_at": savedAt.toIso8601String(), "data": data};
   }
 }
 
@@ -1491,10 +1490,7 @@ class _DraftListPage extends StatelessWidget {
           if (drafts.isEmpty) {
             return const Center(child: Text('No drafts saved yet.'));
           }
-          return _DraftListBody(
-            drafts: drafts,
-            onDelete: onDeleteDraft,
-          );
+          return _DraftListBody(drafts: drafts, onDelete: onDeleteDraft);
         },
       ),
     );
@@ -1551,16 +1547,16 @@ class _DraftListBodyState extends State<_DraftListBody> {
   Future<void> _confirmDelete(BuildContext context, _StoredDraft draft) async {
     final confirmed = await showDialog<bool>(
       context: context,
-      builder: (_) => AlertDialog(
+      builder: (dialogCtx) => AlertDialog(
         title: const Text('Delete draft?'),
         content: const Text('This draft will be removed permanently.'),
         actions: [
           TextButton(
-            onPressed: () => Navigator.of(context).pop(false),
+            onPressed: () => Navigator.of(dialogCtx).pop(false),
             child: const Text('Cancel'),
           ),
           TextButton(
-            onPressed: () => Navigator.of(context).pop(true),
+            onPressed: () => Navigator.of(dialogCtx).pop(true),
             child: const Text('Delete'),
           ),
         ],
@@ -1607,11 +1603,13 @@ class _DraftListBodyState extends State<_DraftListBody> {
     if (network.isNotEmpty) parts.add('Network $network');
     final notes = (map['leg_notes'] as String? ?? '').trim();
     if (notes.isNotEmpty) parts.add('Notes');
-    final mileage = (map['leg_distance'] as num?)?.toDouble() ??
+    final mileage =
+        (map['leg_distance'] as num?)?.toDouble() ??
         (map['leg_mileage'] as num?)?.toDouble();
     if (mileage != null && mileage > 0) {
       parts.add('${mileage.toStringAsFixed(1)} mi');
-    } else if (map['leg_route'] is List && (map['leg_route'] as List).isNotEmpty) {
+    } 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'];

lib/components/pages/traction.dart

@@ -423,12 +423,12 @@ class _TractionPageState extends State<TractionPage> {
             ),
           ),
           const SizedBox(height: 12),
+          Stack(
+            children: [
               if (data.isTractionLoading && traction.isEmpty)
-            const Center(
-              child: Padding(
-                padding: EdgeInsets.symmetric(vertical: 24.0),
-                child: CircularProgressIndicator(),
-              ),
+                const Padding(
+                  padding: EdgeInsets.symmetric(vertical: 32.0),
+                  child: Center(child: CircularProgressIndicator()),
                 )
               else if (traction.isEmpty)
                 Card(
@@ -474,6 +474,17 @@ class _TractionPageState extends State<TractionPage> {
                       ),
                   ],
                 ),
+              if (data.isTractionLoading)
+                Positioned.fill(
+                  child: IgnorePointer(
+                    child: Container(
+                      color: Theme.of(context).colorScheme.surface.withOpacity(0.6),
+                      child: const Center(child: CircularProgressIndicator()),
+                    ),
+                  ),
+                ),
+            ],
+          ),
         ],
       ),
     );
@@ -574,6 +585,12 @@ class _TractionPageState extends State<TractionPage> {
                   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(
@@ -692,6 +709,14 @@ class _TractionPageState extends State<TractionPage> {
     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,

lib/components/pages/trips.dart

@@ -301,6 +301,25 @@ class _TripsPageState extends State<TripsPage> {
                       ],
                     ),
                     const SizedBox(height: 8),
+                    if (!loading && items.isNotEmpty) ...[
+                      Wrap(
+                        spacing: 8,
+                        runSpacing: 8,
+                        children: [
+                          Chip(
+                            avatar: const Icon(Icons.train, size: 16),
+                            label: Text('Total had: ${items.length}'),
+                          ),
+                          Chip(
+                            avatar: const Icon(Icons.star, size: 16),
+                            label: Text(
+                              'Winners: ${items.where((e) => e.won == true).length}',
+                            ),
+                          ),
+                        ],
+                      ),
+                      const SizedBox(height: 8),
+                    ],
                     if (loading)
                       const Center(
                         child: Padding(

lib/main.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:dynamic_color/dynamic_color.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';
@@ -95,6 +96,27 @@ class MyApp extends StatelessWidget {
             ),
             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(),

lib/objects/objects.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:intl/intl.dart';
 
 class DestinationObject {
   const DestinationObject(
@@ -190,6 +191,143 @@ class LocoSummary extends Loco {
   );
 }
 
+class LocoAttrVersion {
+  final String attrCode;
+  final int? versionId;
+  final int locoId;
+  final int? attrTypeId;
+  final String? valueStr;
+  final int? valueInt;
+  final DateTime? valueDate;
+  final bool? valueBool;
+  final String? valueEnum;
+  final DateTime? validFrom;
+  final DateTime? validTo;
+  final DateTime? txnFrom;
+  final DateTime? txnTo;
+  final String? suggestedBy;
+  final String? approvedBy;
+  final DateTime? approvedAt;
+  final int? sourceEventId;
+  final String? precisionLevel;
+  final String? maskedValidFrom;
+  final dynamic valueNorm;
+
+  const LocoAttrVersion({
+    required this.attrCode,
+    required this.locoId,
+    this.versionId,
+    this.attrTypeId,
+    this.valueStr,
+    this.valueInt,
+    this.valueDate,
+    this.valueBool,
+    this.valueEnum,
+    this.validFrom,
+    this.validTo,
+    this.txnFrom,
+    this.txnTo,
+    this.suggestedBy,
+    this.approvedBy,
+    this.approvedAt,
+    this.sourceEventId,
+    this.precisionLevel,
+    this.maskedValidFrom,
+    this.valueNorm,
+  });
+
+  factory LocoAttrVersion.fromJson(Map<String, dynamic> json) {
+    return LocoAttrVersion(
+      attrCode: json['attr_code']?.toString() ?? '',
+      locoId: (json['loco_id'] as num?)?.toInt() ?? 0,
+      versionId: (json['loco_attr_v_id'] as num?)?.toInt(),
+      attrTypeId: (json['attr_type_id'] as num?)?.toInt(),
+      valueStr: json['value_str']?.toString(),
+      valueInt: (json['value_int'] as num?)?.toInt(),
+      valueDate: _parseDate(json['value_date']),
+      valueBool: _parseBool(json['value_bool']),
+      valueEnum: json['value_enum']?.toString(),
+      validFrom: _parseDate(json['valid_from']),
+      validTo: _parseDate(json['valid_to']),
+      txnFrom: _parseDate(json['txn_from']),
+      txnTo: _parseDate(json['txn_to']),
+      suggestedBy: json['suggested_by']?.toString(),
+      approvedBy: json['approved_by']?.toString(),
+      approvedAt: _parseDate(json['approved_at']),
+      sourceEventId: (json['source_event_id'] as num?)?.toInt(),
+      precisionLevel: json['precision_level']?.toString(),
+      maskedValidFrom: json['masked_valid_from']?.toString(),
+      valueNorm: json['value_norm'],
+    );
+  }
+
+  static DateTime? _parseDate(dynamic value) {
+    if (value == null) return null;
+    if (value is DateTime) return value;
+    return DateTime.tryParse(value.toString());
+  }
+
+  static bool? _parseBool(dynamic value) {
+    if (value == null) return null;
+    if (value is bool) return value;
+    if (value is num) return value != 0;
+    final str = value.toString().toLowerCase();
+    if (['true', '1', 'yes'].contains(str)) return true;
+    if (['false', '0', 'no'].contains(str)) return false;
+    return null;
+  }
+
+  static List<LocoAttrVersion> fromGroupedJson(dynamic json) {
+    final List<LocoAttrVersion> items = [];
+    if (json is Map) {
+      json.forEach((key, value) {
+        if (value is List) {
+          for (final entry in value) {
+            if (entry is Map<String, dynamic>) {
+              final merged = Map<String, dynamic>.from(entry);
+              merged.putIfAbsent('attr_code', () => key);
+              items.add(LocoAttrVersion.fromJson(merged));
+            }
+          }
+        }
+      });
+    }
+    items.sort(
+      (a, b) {
+        final aDate = a.validFrom ?? a.txnFrom ?? DateTime.fromMillisecondsSinceEpoch(0);
+        final bDate = b.validFrom ?? b.txnFrom ?? DateTime.fromMillisecondsSinceEpoch(0);
+        final dateCompare = aDate.compareTo(bDate);
+        if (dateCompare != 0) return dateCompare;
+        return a.attrCode.compareTo(b.attrCode);
+      },
+    );
+    return items;
+  }
+
+  String get valueLabel {
+    if (valueStr != null && valueStr!.isNotEmpty) return valueStr!;
+    if (valueEnum != null && valueEnum!.isNotEmpty) return valueEnum!;
+    if (valueInt != null) return valueInt!.toString();
+    if (valueBool != null) return valueBool! ? 'Yes' : 'No';
+    if (valueDate != null) return DateFormat('yyyy-MM-dd').format(valueDate!);
+    if (valueNorm != null && valueNorm.toString().isNotEmpty) {
+      return valueNorm.toString();
+    }
+    return '—';
+  }
+
+  String get validityRange {
+    final start = maskedValidFrom ?? _formatDate(validFrom) ?? 'Unknown';
+    final end = _formatDate(validTo, fallback: 'Present') ?? 'Present';
+    return '$start → $end';
+  }
+
+  String? _formatDate(DateTime? value, {String? fallback}) {
+    if (value == null) return fallback;
+    return DateFormat('yyyy-MM-dd').format(value);
+  }
+}
+
 class LeaderboardEntry {
   final String userId, username, userFullName;
   final double mileage;

lib/services/apiService.dart

@@ -97,10 +97,7 @@ class ApiService {
       return body;
     }
 
-    if (res.statusCode == 401 &&
-        body is Map<String, dynamic> &&
-        body['detail'] == 'Not authenticated' &&
-        _onUnauthorized != null) {
+    if (res.statusCode == 401 && _onUnauthorized != null) {
       await _onUnauthorized!();
     }
 

lib/services/dataService.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:convert';
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/scheduler.dart';
@@ -49,6 +50,12 @@ class DataService extends ChangeNotifier {
   bool get isTractionLoading => _isTractionLoading;
   bool _tractionHasMore = false;
   bool get tractionHasMore => _tractionHasMore;
+  final Map<int, List<LocoAttrVersion>> _locoTimelines = {};
+  final Map<int, bool> _isLocoTimelineLoading = {};
+  List<LocoAttrVersion> timelineForLoco(int locoId) =>
+      _locoTimelines[locoId] ?? [];
+  bool isLocoTimelineLoading(int locoId) =>
+      _isLocoTimelineLoading[locoId] ?? false;
 
   // Trips
   List<TripSummary> _trips = [];
@@ -235,6 +242,24 @@ class DataService extends ChangeNotifier {
     }
   }
 
+  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);
@@ -417,6 +442,30 @@ class DataService extends ChangeNotifier {
     return _locoClasses;
   }
 
+  Future<void> createLocoEvent({
+    required int locoId,
+    required String eventDate,
+    required Map<String, dynamic> values,
+    required String details,
+    String eventType = 'other',
+  }) async {
+    try {
+      await api.put(
+        '/event/new',
+        {
+          'loco_id': locoId,
+          'loco_event_type': eventType,
+          'loco_event_date': eventDate,
+          'loco_event_value': jsonEncode(values),
+          'loco_event_details': details,
+        },
+      );
+    } catch (e) {
+      debugPrint('Failed to create loco event: $e');
+      rethrow;
+    }
+  }
+
   void clear() {
     _homepageStats = null;
     _legs = [];
@@ -424,6 +473,8 @@ class DataService extends ChangeNotifier {
     _trips = [];
     _tripDetails = [];
     _eventFields = [];
+    _locoTimelines.clear();
+    _isLocoTimelineLoading.clear();
     _notifyAsync();
   }
 

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: 0.1.4+1
+version: 0.2.0+1
 
 environment:
   sdk: ^3.8.1