Improve entries page and latest changes panel, units on events and timeline

lib/components/legs/leg_card.dart

@@ -3,8 +3,10 @@ import 'dart:convert';
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
+import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:provider/provider.dart';
 
-class LegCard extends StatelessWidget {
+class LegCard extends StatefulWidget {
   const LegCard({
     super.key,
     required this.leg,
@@ -16,30 +18,106 @@ class LegCard extends StatelessWidget {
   final bool showEditButton;
   final bool showDate;
 
+  @override
+  State<LegCard> createState() => _LegCardState();
+}
+
+class _LegCardState extends State<LegCard> {
+  bool _expanded = false;
+
   @override
   Widget build(BuildContext context) {
+    final leg = widget.leg;
     final routeSegments = _parseRouteSegments(leg.route);
     final textTheme = Theme.of(context).textTheme;
     return Card(
       child: ExpansionTile(
+        onExpansionChanged: (v) => setState(() => _expanded = v),
         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: ${leg.headcode}',
-                style: textTheme.labelSmall,
-              ),
-            if (leg.network.isNotEmpty)
-              Text(
-                leg.network,
-                style: textTheme.labelSmall,
-              ),
-          ],
+        title: LayoutBuilder(
+          builder: (context, constraints) {
+            final isWide = constraints.maxWidth > 520;
+            final routeText = Text('${leg.start} → ${leg.end}');
+            final timeText =
+                Text(_formatDateTime(leg.beginTime, includeDate: widget.showDate));
+            if (!isWide) {
+              return routeText;
+            }
+            return Row(
+              children: [
+                timeText,
+                const SizedBox(width: 6),
+                const Text('·'),
+                const SizedBox(width: 6),
+                Expanded(child: routeText),
+              ],
+            );
+          },
+        ),
+        subtitle: LayoutBuilder(
+          builder: (context, constraints) {
+            final isWide = constraints.maxWidth > 520;
+            final timeWidget =
+                Text(_formatDateTime(leg.beginTime, includeDate: widget.showDate));
+            final tractionWrap = !_expanded && leg.locos.isNotEmpty
+                ? Wrap(
+                    spacing: 8,
+                    runSpacing: 4,
+                    children: leg.locos.map((loco) {
+                      final iconColor = loco.powering
+                          ? Theme.of(context).colorScheme.primary
+                          : Theme.of(context).hintColor;
+                      final label = '${loco.locoClass} ${loco.number}'.trim();
+                      return Row(
+                        mainAxisSize: MainAxisSize.min,
+                        children: [
+                          Icon(Icons.train, size: 14, color: iconColor),
+                          const SizedBox(width: 4),
+                          Text(
+                            label.isEmpty ? 'Loco ${loco.id}' : label,
+                            style: textTheme.labelSmall,
+                          ),
+                        ],
+                      );
+                    }).toList(),
+                  )
+                : null;
+
+            final children = <Widget>[];
+            if (isWide) {
+              if (tractionWrap != null) {
+                children.add(tractionWrap);
+              }
+            } else {
+              children.add(timeWidget);
+              if (tractionWrap != null) {
+                children.add(const SizedBox(height: 4));
+                children.add(tractionWrap);
+              }
+            }
+            if (leg.headcode.isNotEmpty) {
+              children.add(
+                Text(
+                  'Headcode: ${leg.headcode}',
+                  style: textTheme.labelSmall,
+                ),
+              );
+            }
+            if (leg.network.isNotEmpty) {
+              children.add(
+                Text(
+                  leg.network,
+                  style: textTheme.labelSmall,
+                ),
+              );
+            }
+
+            return Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: children,
+            );
+          },
         ),
         trailing: Row(
           mainAxisSize: MainAxisSize.min,
@@ -66,7 +144,7 @@ class LegCard extends StatelessWidget {
                 ],
               ],
             ),
-            if (showEditButton) ...[
+            if (widget.showEditButton) ...[
               const SizedBox(width: 8),
               IconButton(
                 tooltip: 'Edit entry',
@@ -76,6 +154,18 @@ class LegCard extends StatelessWidget {
                 constraints: const BoxConstraints(minWidth: 32, minHeight: 32),
                 onPressed: () => context.push('/legs/edit/${leg.id}'),
               ),
+              if (_expanded) ...[
+                const SizedBox(width: 4),
+                IconButton(
+                  tooltip: 'Delete entry',
+                  icon: const Icon(Icons.delete_outline),
+                  color: Theme.of(context).colorScheme.error,
+                  visualDensity: VisualDensity.compact,
+                  padding: EdgeInsets.zero,
+                  constraints: const BoxConstraints(minWidth: 32, minHeight: 32),
+                  onPressed: () => _confirmDelete(context, leg.id),
+                ),
+              ],
             ],
           ],
         ),
@@ -114,15 +204,52 @@ class LegCard extends StatelessWidget {
     );
   }
 
+  Future<void> _confirmDelete(BuildContext context, int legId) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('Delete entry?'),
+        content: const Text('Are you sure you want to delete this entry?'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(ctx).pop(false),
+            child: const Text('Cancel'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.of(ctx).pop(true),
+            child: const Text('Delete'),
+          ),
+        ],
+      ),
+    );
+    if (confirmed != true) return;
+
+    final data = context.read<DataService>();
+    final messenger = ScaffoldMessenger.of(context);
+    try {
+      await data.api.delete('/legs/delete?leg_id=$legId');
+      await data.refreshLegs();
+      messenger.showSnackBar(const SnackBar(content: Text('Entry deleted')));
+    } catch (e) {
+      messenger.showSnackBar(
+        SnackBar(content: Text('Failed to delete entry: $e')),
+      );
+    }
+  }
+
   String _formatDate(DateTime? date) {
     if (date == null) return '';
     return '${date.year.toString().padLeft(4, '0')}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}';
   }
 
-  String _formatDateTime(DateTime date) {
+  String _formatTime(DateTime date) {
+    return '${date.hour.toString().padLeft(2, '0')}:${date.minute.toString().padLeft(2, '0')}';
+  }
+
+  String _formatDateTime(DateTime date, {bool includeDate = true}) {
+    final timeStr = _formatTime(date);
+    if (!includeDate) return timeStr;
     final dateStr = _formatDate(date);
-    final timeStr =
-        '${date.hour.toString().padLeft(2, '0')}:${date.minute.toString().padLeft(2, '0')}';
     return '$dateStr · $timeStr';
   }