Implement Asia/Manila Time Zone

Handled saving of Relievers

lib/main.dart

@@ -6,12 +6,15 @@ import 'package:flutter_dotenv/flutter_dotenv.dart';
 
 import 'app.dart';
 import 'providers/notifications_provider.dart';
+import 'utils/app_time.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
   await dotenv.load(fileName: '.env');
 
+  AppTime.initialize(location: 'Asia/Manila');
+
   final supabaseUrl = dotenv.env['SUPABASE_URL'] ?? '';
   final supabaseAnonKey = dotenv.env['SUPABASE_ANON_KEY'] ?? '';
 

lib/models/app_settings.dart

@@ -1,19 +1,69 @@
 class GeofenceConfig {
-  GeofenceConfig({
-    required this.lat,
-    required this.lng,
-    required this.radiusMeters,
-  });
+  GeofenceConfig({this.lat, this.lng, this.radiusMeters, this.polygon});
+
+  final double? lat;
+  final double? lng;
+  final double? radiusMeters;
+  final List<GeofencePoint>? polygon;
+
+  bool get hasPolygon => polygon?.isNotEmpty == true;
+  bool get hasCircle =>
+      lat != null && lng != null && radiusMeters != null && radiusMeters! > 0;
+
+  bool containsPolygon(double pointLat, double pointLng) {
+    final points = polygon;
+    if (points == null || points.isEmpty) return false;
+    var inside = false;
+    for (var i = 0, j = points.length - 1; i < points.length; j = i++) {
+      final xi = points[i].lng;
+      final yi = points[i].lat;
+      final xj = points[j].lng;
+      final yj = points[j].lat;
+
+      final intersects =
+          ((yi > pointLat) != (yj > pointLat)) &&
+          (pointLng < (xj - xi) * (pointLat - yi) / (yj - yi) + xi);
+      if (intersects) {
+        inside = !inside;
+      }
+    }
+    return inside;
+  }
+
+  factory GeofenceConfig.fromJson(Map<String, dynamic> json) {
+    final rawPolygon = json['polygon'] ?? json['points'];
+    final polygonPoints = <GeofencePoint>[];
+    if (rawPolygon is List) {
+      for (final entry in rawPolygon) {
+        if (entry is Map<String, dynamic>) {
+          polygonPoints.add(GeofencePoint.fromJson(entry));
+        } else if (entry is Map) {
+          polygonPoints.add(
+            GeofencePoint.fromJson(Map<String, dynamic>.from(entry)),
+          );
+        }
+      }
+    }
+
+    return GeofenceConfig(
+      lat: (json['lat'] as num?)?.toDouble(),
+      lng: (json['lng'] as num?)?.toDouble(),
+      radiusMeters: (json['radius_m'] as num?)?.toDouble(),
+      polygon: polygonPoints.isEmpty ? null : polygonPoints,
+    );
+  }
+}
+
+class GeofencePoint {
+  const GeofencePoint({required this.lat, required this.lng});
 
   final double lat;
   final double lng;
-  final double radiusMeters;
 
-  factory GeofenceConfig.fromJson(Map<String, dynamic> json) {
-    return GeofenceConfig(
+  factory GeofencePoint.fromJson(Map<String, dynamic> json) {
+    return GeofencePoint(
       lat: (json['lat'] as num).toDouble(),
       lng: (json['lng'] as num).toDouble(),
-      radiusMeters: (json['radius_m'] as num).toDouble(),
     );
   }
 }

lib/models/duty_schedule.dart

@@ -1,3 +1,5 @@
+import '../utils/app_time.dart';
+
 class DutySchedule {
   DutySchedule({
     required this.id,
@@ -9,6 +11,7 @@ class DutySchedule {
     required this.createdAt,
     required this.checkInAt,
     required this.checkInLocation,
+    required this.relieverIds,
   });
 
   final String id;
@@ -20,20 +23,30 @@ class DutySchedule {
   final DateTime createdAt;
   final DateTime? checkInAt;
   final Object? checkInLocation;
+  final List<String> relieverIds;
 
   factory DutySchedule.fromMap(Map<String, dynamic> map) {
+    final relieversRaw = map['reliever_ids'];
+    final relievers = relieversRaw is List
+        ? relieversRaw
+              .where((e) => e != null)
+              .map((entry) => entry.toString())
+              .where((s) => s.isNotEmpty)
+              .toList()
+        : <String>[];
     return DutySchedule(
       id: map['id'] as String,
       userId: map['user_id'] as String,
       shiftType: map['shift_type'] as String? ?? 'normal',
-      startTime: DateTime.parse(map['start_time'] as String),
-      endTime: DateTime.parse(map['end_time'] as String),
+      startTime: AppTime.parse(map['start_time'] as String),
+      endTime: AppTime.parse(map['end_time'] as String),
       status: map['status'] as String? ?? 'scheduled',
-      createdAt: DateTime.parse(map['created_at'] as String),
+      createdAt: AppTime.parse(map['created_at'] as String),
       checkInAt: map['check_in_at'] == null
           ? null
-          : DateTime.parse(map['check_in_at'] as String),
+          : AppTime.parse(map['check_in_at'] as String),
       checkInLocation: map['check_in_location'],
+      relieverIds: relievers,
     );
   }
 }

lib/models/notification_item.dart

@@ -1,3 +1,5 @@
+import '../utils/app_time.dart';
+
 class NotificationItem {
   NotificationItem({
     required this.id,
@@ -32,10 +34,10 @@ class NotificationItem {
       taskId: map['task_id'] as String?,
       messageId: map['message_id'] as int?,
       type: map['type'] as String? ?? 'mention',
-      createdAt: DateTime.parse(map['created_at'] as String),
+      createdAt: AppTime.parse(map['created_at'] as String),
       readAt: map['read_at'] == null
           ? null
-          : DateTime.parse(map['read_at'] as String),
+          : AppTime.parse(map['read_at'] as String),
     );
   }
 }

lib/models/swap_request.dart

@@ -1,3 +1,5 @@
+import '../utils/app_time.dart';
+
 class SwapRequest {
   SwapRequest({
     required this.id,
@@ -26,10 +28,10 @@ class SwapRequest {
       recipientId: map['recipient_id'] as String,
       shiftId: map['shift_id'] as String,
       status: map['status'] as String? ?? 'pending',
-      createdAt: DateTime.parse(map['created_at'] as String),
+      createdAt: AppTime.parse(map['created_at'] as String),
       updatedAt: map['updated_at'] == null
           ? null
-          : DateTime.parse(map['updated_at'] as String),
+          : AppTime.parse(map['updated_at'] as String),
       approvedBy: map['approved_by'] as String?,
     );
   }

lib/models/task.dart

@@ -1,3 +1,5 @@
+import '../utils/app_time.dart';
+
 class Task {
   Task({
     required this.id,
@@ -37,14 +39,14 @@ class Task {
       status: map['status'] as String? ?? 'queued',
       priority: map['priority'] as int? ?? 1,
       queueOrder: map['queue_order'] as int?,
-      createdAt: DateTime.parse(map['created_at'] as String),
+      createdAt: AppTime.parse(map['created_at'] as String),
       creatorId: map['creator_id'] as String?,
       startedAt: map['started_at'] == null
           ? null
-          : DateTime.parse(map['started_at'] as String),
+          : AppTime.parse(map['started_at'] as String),
       completedAt: map['completed_at'] == null
           ? null
-          : DateTime.parse(map['completed_at'] as String),
+          : AppTime.parse(map['completed_at'] as String),
     );
   }
 }

lib/models/task_assignment.dart

@@ -1,3 +1,5 @@
+import '../utils/app_time.dart';
+
 class TaskAssignment {
   TaskAssignment({
     required this.taskId,
@@ -13,7 +15,7 @@ class TaskAssignment {
     return TaskAssignment(
       taskId: map['task_id'] as String,
       userId: map['user_id'] as String,
-      createdAt: DateTime.parse(map['created_at'] as String),
+      createdAt: AppTime.parse(map['created_at'] as String),
     );
   }
 }

lib/models/ticket.dart

@@ -1,3 +1,5 @@
+import '../utils/app_time.dart';
+
 class Ticket {
   Ticket({
     required this.id,
@@ -30,17 +32,17 @@ class Ticket {
       description: map['description'] as String? ?? '',
       officeId: map['office_id'] as String? ?? '',
       status: map['status'] as String? ?? 'pending',
-      createdAt: DateTime.parse(map['created_at'] as String),
+      createdAt: AppTime.parse(map['created_at'] as String),
       creatorId: map['creator_id'] as String?,
       respondedAt: map['responded_at'] == null
           ? null
-          : DateTime.parse(map['responded_at'] as String),
+          : AppTime.parse(map['responded_at'] as String),
       promotedAt: map['promoted_at'] == null
           ? null
-          : DateTime.parse(map['promoted_at'] as String),
+          : AppTime.parse(map['promoted_at'] as String),
       closedAt: map['closed_at'] == null
           ? null
-          : DateTime.parse(map['closed_at'] as String),
+          : AppTime.parse(map['closed_at'] as String),
     );
   }
 }

lib/models/ticket_message.dart

@@ -1,3 +1,5 @@
+import '../utils/app_time.dart';
+
 class TicketMessage {
   TicketMessage({
     required this.id,
@@ -22,7 +24,7 @@ class TicketMessage {
       taskId: map['task_id'] as String?,
       senderId: map['sender_id'] as String?,
       content: map['content'] as String? ?? '',
-      createdAt: DateTime.parse(map['created_at'] as String),
+      createdAt: AppTime.parse(map['created_at'] as String),
     );
   }
 }

lib/providers/admin_user_provider.dart

@@ -2,6 +2,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:supabase_flutter/supabase_flutter.dart';
 
 import 'supabase_provider.dart';
+import '../utils/app_time.dart';
 
 final adminUserControllerProvider = Provider<AdminUserController>((ref) {
   final client = ref.watch(supabaseClientProvider);
@@ -16,7 +17,7 @@ class AdminUserStatus {
 
   bool get isLocked {
     if (bannedUntil == null) return false;
-    return bannedUntil!.isAfter(DateTime.now().toUtc());
+    return bannedUntil!.isAfter(AppTime.now());
   }
 }
 
@@ -67,11 +68,14 @@ class AdminUserController {
     );
     final user = (data as Map<String, dynamic>)['user'] as Map<String, dynamic>;
     final bannedUntilRaw = user['banned_until'] as String?;
+    final bannedUntilParsed = bannedUntilRaw == null
+        ? null
+        : DateTime.tryParse(bannedUntilRaw);
     return AdminUserStatus(
       email: user['email'] as String?,
-      bannedUntil: bannedUntilRaw == null
+      bannedUntil: bannedUntilParsed == null
           ? null
-          : DateTime.tryParse(bannedUntilRaw),
+          : AppTime.toAppTime(bannedUntilParsed),
     );
   }
 

lib/providers/notifications_provider.dart

@@ -4,6 +4,7 @@ import 'package:supabase_flutter/supabase_flutter.dart';
 import '../models/notification_item.dart';
 import 'profile_provider.dart';
 import 'supabase_provider.dart';
+import '../utils/app_time.dart';
 
 final notificationsProvider = StreamProvider<List<NotificationItem>>((ref) {
   final userId = ref.watch(currentUserIdProvider);
@@ -69,7 +70,7 @@ class NotificationsController {
   Future<void> markRead(String id) async {
     await _client
         .from('notifications')
-        .update({'read_at': DateTime.now().toUtc().toIso8601String()})
+        .update({'read_at': AppTime.nowUtc().toIso8601String()})
         .eq('id', id);
   }
 
@@ -78,7 +79,7 @@ class NotificationsController {
     if (userId == null) return;
     await _client
         .from('notifications')
-        .update({'read_at': DateTime.now().toUtc().toIso8601String()})
+        .update({'read_at': AppTime.nowUtc().toIso8601String()})
         .eq('ticket_id', ticketId)
         .eq('user_id', userId)
         .filter('read_at', 'is', null);
@@ -89,7 +90,7 @@ class NotificationsController {
     if (userId == null) return;
     await _client
         .from('notifications')
-        .update({'read_at': DateTime.now().toUtc().toIso8601String()})
+        .update({'read_at': AppTime.nowUtc().toIso8601String()})
         .eq('task_id', taskId)
         .eq('user_id', userId)
         .filter('read_at', 'is', null);

lib/screens/admin/user_management_screen.dart

@@ -9,6 +9,7 @@ import '../../providers/admin_user_provider.dart';
 import '../../providers/profile_provider.dart';
 import '../../providers/tickets_provider.dart';
 import '../../providers/user_offices_provider.dart';
+import '../../utils/app_time.dart';
 import '../../widgets/mono_text.dart';
 import '../../widgets/responsive_body.dart';
 import '../../widgets/tasq_adaptive_list.dart';
@@ -124,8 +125,9 @@ class _UserManagementScreenState extends ConsumerState<UserManagementScreen> {
     final filteredProfiles = query.isEmpty
         ? profiles
         : profiles.where((profile) {
-        final label =
-          profile.fullName.isNotEmpty ? profile.fullName : profile.id;
+            final label = profile.fullName.isNotEmpty
+                ? profile.fullName
+                : profile.id;
             return label.toLowerCase().contains(query) ||
                 profile.id.toLowerCase().contains(query);
           }).toList();
@@ -156,8 +158,9 @@ class _UserManagementScreenState extends ConsumerState<UserManagementScreen> {
         TasQColumn<Profile>(
           header: 'User',
           cellBuilder: (context, profile) {
-            final label =
-                profile.fullName.isEmpty ? profile.id : profile.fullName;
+            final label = profile.fullName.isEmpty
+                ? profile.id
+                : profile.fullName;
             return Text(label);
           },
         ),
@@ -166,8 +169,9 @@ class _UserManagementScreenState extends ConsumerState<UserManagementScreen> {
           cellBuilder: (context, profile) {
             final status = _statusCache[profile.id];
             final hasError = _statusErrors.contains(profile.id);
-            final email =
-                hasError ? 'Unavailable' : (status?.email ?? 'Unknown');
+            final email = hasError
+                ? 'Unavailable'
+                : (status?.email ?? 'Unknown');
             return Text(email);
           },
         ),
@@ -188,8 +192,7 @@ class _UserManagementScreenState extends ConsumerState<UserManagementScreen> {
             final status = _statusCache[profile.id];
             final hasError = _statusErrors.contains(profile.id);
             final isLoading = _statusLoading.contains(profile.id);
-            final statusLabel =
-                _userStatusLabel(status, hasError, isLoading);
+            final statusLabel = _userStatusLabel(status, hasError, isLoading);
             return _StatusBadge(label: statusLabel);
           },
         ),
@@ -204,8 +207,7 @@ class _UserManagementScreenState extends ConsumerState<UserManagementScreen> {
       onRowTap: (profile) =>
           _showUserDialog(context, profile, offices, assignments),
       mobileTileBuilder: (context, profile, actions) {
-        final label =
-            profile.fullName.isEmpty ? profile.id : profile.fullName;
+        final label = profile.fullName.isEmpty ? profile.id : profile.fullName;
         final status = _statusCache[profile.id];
         final hasError = _statusErrors.contains(profile.id);
         final isLoading = _statusLoading.contains(profile.id);
@@ -673,7 +675,7 @@ String _userStatusLabel(
 
 String _formatLastActiveLabel(DateTime? value) {
   if (value == null) return 'N/A';
-  final now = DateTime.now();
+  final now = AppTime.now();
   final diff = now.difference(value);
   if (diff.inMinutes < 1) return 'Just now';
   if (diff.inHours < 1) return '${diff.inMinutes}m ago';

lib/screens/dashboard/dashboard_screen.dart

@@ -12,6 +12,7 @@ import '../../providers/tickets_provider.dart';
 import '../../widgets/responsive_body.dart';
 import '../../widgets/mono_text.dart';
 import '../../widgets/status_pill.dart';
+import '../../utils/app_time.dart';
 
 class DashboardMetrics {
   DashboardMetrics({
@@ -90,7 +91,7 @@ final dashboardMetricsProvider = Provider<AsyncValue<DashboardMetrics>>((ref) {
   final assignments = assignmentsAsync.valueOrNull ?? const <TaskAssignment>[];
   final messages = messagesAsync.valueOrNull ?? const <TicketMessage>[];
 
-  final now = DateTime.now();
+  final now = AppTime.now();
   final startOfDay = DateTime(now.year, now.month, now.day);
 
   final staffProfiles = profiles

lib/screens/tasks/task_detail_screen.dart

@@ -11,6 +11,7 @@ import '../../providers/profile_provider.dart';
 import '../../providers/tasks_provider.dart';
 import '../../providers/tickets_provider.dart';
 import '../../providers/typing_provider.dart';
+import '../../utils/app_time.dart';
 import '../../widgets/app_breakpoints.dart';
 import '../../widgets/mono_text.dart';
 import '../../widgets/responsive_body.dart';
@@ -396,13 +397,13 @@ class _TaskDetailScreenState extends ConsumerState<TaskDetailScreen> {
     final animateExecution = task.startedAt != null && task.completedAt == null;
 
     if (!animateQueue && !animateExecution) {
-      return _buildTatContent(task, DateTime.now());
+      return _buildTatContent(task, AppTime.now());
     }
 
     return StreamBuilder<int>(
       stream: Stream.periodic(const Duration(seconds: 1), (tick) => tick),
       builder: (context, snapshot) {
-        return _buildTatContent(task, DateTime.now());
+        return _buildTatContent(task, AppTime.now());
       },
     );
   }

lib/screens/tasks/tasks_list_screen.dart

@@ -12,6 +12,7 @@ import '../../providers/profile_provider.dart';
 import '../../providers/tasks_provider.dart';
 import '../../providers/tickets_provider.dart';
 import '../../providers/typing_provider.dart';
+import '../../utils/app_time.dart';
 import '../../widgets/mono_text.dart';
 import '../../widgets/responsive_body.dart';
 import '../../widgets/tasq_adaptive_list.dart';
@@ -171,8 +172,8 @@ class _TasksListScreenState extends ConsumerState<TasksListScreen> {
                       final next = await showDateRangePicker(
                         context: context,
                         firstDate: DateTime(2020),
-                        lastDate: DateTime.now().add(const Duration(days: 365)),
-                        currentDate: DateTime.now(),
+                        lastDate: AppTime.now().add(const Duration(days: 365)),
+                        currentDate: AppTime.now(),
                         initialDateRange: _selectedDateRange,
                       );
                       if (!mounted) return;

lib/screens/tickets/tickets_list_screen.dart

@@ -10,6 +10,7 @@ import '../../providers/notifications_provider.dart';
 import '../../providers/profile_provider.dart';
 import '../../providers/tickets_provider.dart';
 import '../../providers/typing_provider.dart';
+import '../../utils/app_time.dart';
 import '../../widgets/mono_text.dart';
 import '../../widgets/responsive_body.dart';
 import '../../widgets/tasq_adaptive_list.dart';
@@ -135,8 +136,8 @@ class _TicketsListScreenState extends ConsumerState<TicketsListScreen> {
                       final next = await showDateRangePicker(
                         context: context,
                         firstDate: DateTime(2020),
-                        lastDate: DateTime.now().add(const Duration(days: 365)),
-                        currentDate: DateTime.now(),
+                        lastDate: AppTime.now().add(const Duration(days: 365)),
+                        currentDate: AppTime.now(),
                         initialDateRange: _selectedDateRange,
                       );
                       if (!mounted) return;

lib/screens/workforce/workforce_screen.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:geolocator/geolocator.dart';
@@ -7,6 +9,7 @@ import '../../models/profile.dart';
 import '../../models/swap_request.dart';
 import '../../providers/profile_provider.dart';
 import '../../providers/workforce_provider.dart';
+import '../../utils/app_time.dart';
 import '../../widgets/responsive_body.dart';
 
 class WorkforceScreen extends ConsumerWidget {
@@ -137,6 +140,10 @@ class _SchedulePanel extends ConsumerWidget {
                         schedule,
                         isAdmin,
                       ),
+                      relieverLabels: _relieverLabelsFromIds(
+                        schedule.relieverIds,
+                        profileById,
+                      ),
                       isMine: schedule.userId == currentUserId,
                     ),
                   ),
@@ -217,30 +224,46 @@ class _SchedulePanel extends ConsumerWidget {
     final weekday = weekdays[value.weekday - 1];
     return '$weekday, $month $day, ${value.year}';
   }
+
+  List<String> _relieverLabelsFromIds(
+    List<String> relieverIds,
+    Map<String, Profile> profileById,
+  ) {
+    if (relieverIds.isEmpty) return const [];
+    return relieverIds
+        .map(
+          (id) => profileById[id]?.fullName.isNotEmpty == true
+              ? profileById[id]!.fullName
+              : id,
+        )
+        .toList();
+  }
 }
 
 class _ScheduleTile extends ConsumerWidget {
   const _ScheduleTile({
     required this.schedule,
     required this.displayName,
+    required this.relieverLabels,
     required this.isMine,
   });
 
   final DutySchedule schedule;
   final String displayName;
+  final List<String> relieverLabels;
   final bool isMine;
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final currentUserId = ref.watch(currentUserIdProvider);
     final swaps = ref.watch(swapRequestsProvider).valueOrNull ?? [];
-    final now = DateTime.now();
+    final now = AppTime.now();
     final isPast = schedule.startTime.isBefore(now);
     final canCheckIn =
         isMine &&
         schedule.checkInAt == null &&
         (schedule.status == 'scheduled' || schedule.status == 'late') &&
-        now.isAfter(schedule.startTime.subtract(const Duration(minutes: 15))) &&
+        now.isAfter(schedule.startTime.subtract(const Duration(hours: 2))) &&
         now.isBefore(schedule.endTime);
     final hasRequestedSwap = swaps.any(
       (swap) =>
@@ -253,7 +276,9 @@ class _ScheduleTile extends ConsumerWidget {
     return Card(
       child: Padding(
         padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
-        child: Row(
+        child: Column(
+          children: [
+            Row(
               children: [
                 Expanded(
                   child: Column(
@@ -305,6 +330,27 @@ class _ScheduleTile extends ConsumerWidget {
                 ),
               ],
             ),
+            if (relieverLabels.isNotEmpty)
+              ExpansionTile(
+                tilePadding: EdgeInsets.zero,
+                title: const Text('Relievers'),
+                children: [
+                  for (final label in relieverLabels)
+                    Align(
+                      alignment: Alignment.centerLeft,
+                      child: Padding(
+                        padding: const EdgeInsets.only(
+                          left: 8,
+                          right: 8,
+                          bottom: 6,
+                        ),
+                        child: Text(label),
+                      ),
+                    ),
+                ],
+              ),
+          ],
+        ),
       ),
     );
   }
@@ -317,14 +363,22 @@ class _ScheduleTile extends ConsumerWidget {
     final geofence = await ref.read(geofenceProvider.future);
     if (geofence == null) {
       if (!context.mounted) return;
-      _showMessage(context, 'Geofence is not configured.');
+      await _showAlert(
+        context,
+        title: 'Geofence missing',
+        message: 'Geofence is not configured.',
+      );
       return;
     }
 
     final serviceEnabled = await Geolocator.isLocationServiceEnabled();
     if (!serviceEnabled) {
       if (!context.mounted) return;
-      _showMessage(context, 'Location services are disabled.');
+      await _showAlert(
+        context,
+        title: 'Location disabled',
+        message: 'Location services are disabled.',
+      );
       return;
     }
 
@@ -335,28 +389,43 @@ class _ScheduleTile extends ConsumerWidget {
     if (permission == LocationPermission.denied ||
         permission == LocationPermission.deniedForever) {
       if (!context.mounted) return;
-      _showMessage(context, 'Location permission denied.');
+      await _showAlert(
+        context,
+        title: 'Permission denied',
+        message: 'Location permission denied.',
+      );
       return;
     }
-
+    if (!context.mounted) return;
+    final progressContext = await _showCheckInProgress(context);
+    try {
       final position = await Geolocator.getCurrentPosition(
-      locationSettings: const LocationSettings(accuracy: LocationAccuracy.high),
+        locationSettings: const LocationSettings(
+          accuracy: LocationAccuracy.high,
+        ),
       );
 
-    final distance = Geolocator.distanceBetween(
+      final isInside = geofence.hasPolygon
+          ? geofence.containsPolygon(position.latitude, position.longitude)
+          : geofence.hasCircle &&
+                Geolocator.distanceBetween(
                       position.latitude,
                       position.longitude,
-      geofence.lat,
-      geofence.lng,
-    );
+                      geofence.lat!,
+                      geofence.lng!,
+                    ) <=
+                    geofence.radiusMeters!;
 
-    if (distance > geofence.radiusMeters) {
+      if (!isInside) {
         if (!context.mounted) return;
-      _showMessage(context, 'You are outside the geofence. Wala ka sa CRMC.');
+        await _showAlert(
+          context,
+          title: 'Outside geofence',
+          message: 'You are outside the geofence. Wala ka sa CRMC.',
+        );
         return;
       }
 
-    try {
       final status = await ref
           .read(workforceControllerProvider)
           .checkIn(
@@ -366,10 +435,22 @@ class _ScheduleTile extends ConsumerWidget {
           );
       ref.invalidate(dutySchedulesProvider);
       if (!context.mounted) return;
-      _showMessage(context, 'Checked in ($status).');
+      await _showAlert(
+        context,
+        title: 'Checked in',
+        message: 'Checked in ($status).',
+      );
     } catch (error) {
       if (!context.mounted) return;
-      _showMessage(context, 'Check-in failed: $error');
+      await _showAlert(
+        context,
+        title: 'Check-in failed',
+        message: 'Check-in failed: $error',
+      );
+    } finally {
+      if (progressContext.mounted) {
+        Navigator.of(progressContext).pop();
+      }
     }
   }
 
@@ -446,6 +527,61 @@ class _ScheduleTile extends ConsumerWidget {
     ).showSnackBar(SnackBar(content: Text(message)));
   }
 
+  Future<void> _showAlert(
+    BuildContext context, {
+    required String title,
+    required String message,
+  }) async {
+    await showDialog<void>(
+      context: context,
+      builder: (dialogContext) {
+        return AlertDialog(
+          title: Text(title),
+          content: Text(message),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.of(dialogContext).pop(),
+              child: const Text('OK'),
+            ),
+          ],
+        );
+      },
+    );
+  }
+
+  Future<BuildContext> _showCheckInProgress(BuildContext context) {
+    final completer = Completer<BuildContext>();
+    showDialog<void>(
+      context: context,
+      barrierDismissible: false,
+      builder: (dialogContext) {
+        if (!completer.isCompleted) {
+          completer.complete(dialogContext);
+        }
+        return AlertDialog(
+          title: const Text('Validating location'),
+          content: Row(
+            children: [
+              const SizedBox(
+                height: 24,
+                width: 24,
+                child: CircularProgressIndicator(strokeWidth: 2),
+              ),
+              const SizedBox(width: 12),
+              Flexible(
+                child: Text(
+                  'Please wait while we verify your location.',
+                  style: Theme.of(context).textTheme.bodyMedium,
+                ),
+              ),
+            ],
+          ),
+        );
+      },
+    );
+    return completer.future;
+  }
+
   void _openSwapsTab(BuildContext context) {
     final controller = DefaultTabController.maybeOf(context);
     if (controller != null) {
@@ -500,13 +636,15 @@ class _DraftSchedule {
     required this.shiftType,
     required this.startTime,
     required this.endTime,
-  });
+    List<String>? relieverIds,
+  }) : relieverIds = relieverIds ?? <String>[];
 
   final int localId;
   String userId;
   String shiftType;
   DateTime startTime;
   DateTime endTime;
+  List<String> relieverIds;
 }
 
 class _RotationEntry {
@@ -669,7 +807,7 @@ class _ScheduleGeneratorPanelState
   }
 
   Future<void> _pickDate({required bool isStart}) async {
-    final now = DateTime.now();
+    final now = AppTime.now();
     final initial = isStart ? _startDate ?? now : _endDate ?? _startDate ?? now;
     final picked = await showDatePicker(
       context: context,
@@ -807,14 +945,24 @@ class _ScheduleGeneratorPanelState
       separatorBuilder: (context, index) => const SizedBox(height: 8),
       itemBuilder: (context, index) {
         final draft = _draftSchedules[index];
-        final profile = _profileById()[draft.userId];
+        final profileById = _profileById();
+        final profile = profileById[draft.userId];
         final userLabel = profile?.fullName.isNotEmpty == true
             ? profile!.fullName
             : draft.userId;
+        final relieverLabels = draft.relieverIds
+            .map(
+              (id) => profileById[id]?.fullName.isNotEmpty == true
+                  ? profileById[id]!.fullName
+                  : id,
+            )
+            .toList();
         return Card(
           child: Padding(
             padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
-            child: Row(
+            child: Column(
+              children: [
+                Row(
                   children: [
                     Expanded(
                       child: Column(
@@ -822,9 +970,8 @@ class _ScheduleGeneratorPanelState
                         children: [
                           Text(
                             '${_shiftLabel(draft.shiftType)} · $userLabel',
-                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
-                          fontWeight: FontWeight.w600,
-                        ),
+                            style: Theme.of(context).textTheme.bodyMedium
+                                ?.copyWith(fontWeight: FontWeight.w600),
                           ),
                           const SizedBox(height: 4),
                           Text(
@@ -846,6 +993,27 @@ class _ScheduleGeneratorPanelState
                     ),
                   ],
                 ),
+                if (relieverLabels.isNotEmpty)
+                  ExpansionTile(
+                    tilePadding: EdgeInsets.zero,
+                    title: const Text('Relievers'),
+                    children: [
+                      for (final label in relieverLabels)
+                        Align(
+                          alignment: Alignment.centerLeft,
+                          child: Padding(
+                            padding: const EdgeInsets.only(
+                              left: 8,
+                              right: 8,
+                              bottom: 6,
+                            ),
+                            child: Text(label),
+                          ),
+                        ),
+                    ],
+                  ),
+              ],
+            ),
           ),
         );
       },
@@ -864,8 +1032,8 @@ class _ScheduleGeneratorPanelState
     setState(() {
       _draftSchedules.removeWhere((item) => item.localId == draft.localId);
       _warnings = _buildWarnings(
-        _startDate ?? DateTime.now(),
-        _endDate ?? DateTime.now(),
+        _startDate ?? AppTime.now(),
+        _endDate ?? AppTime.now(),
         _draftSchedules,
       );
     });
@@ -878,7 +1046,7 @@ class _ScheduleGeneratorPanelState
       return;
     }
 
-    final start = existing?.startTime ?? _startDate ?? DateTime.now();
+    final start = existing?.startTime ?? _startDate ?? AppTime.now();
     var selectedDate = DateTime(start.year, start.month, start.day);
     var selectedUserId = existing?.userId ?? staff.first.id;
     var selectedShift = existing?.shiftType ?? 'am';
@@ -1099,6 +1267,7 @@ class _ScheduleGeneratorPanelState
             'start_time': draft.startTime.toIso8601String(),
             'end_time': draft.endTime.toIso8601String(),
             'status': 'scheduled',
+            'reliever_ids': draft.relieverIds,
           },
         )
         .toList();
@@ -1249,6 +1418,10 @@ class _ScheduleGeneratorPanelState
       final nextWeekPmUserId = staff.isEmpty
           ? null
           : staff[(pmBaseIndex + 1) % staff.length].id;
+      final pmRelievers = _buildRelievers(pmBaseIndex, staff);
+      final nextWeekRelievers = staff.isEmpty
+          ? <String>[]
+          : _buildRelievers((pmBaseIndex + 1) % staff.length, staff);
       var weekendNormalOffset = 0;
 
       for (
@@ -1273,6 +1446,7 @@ class _ScheduleGeneratorPanelState
               'normal',
               staff[normalIndex].id,
               day,
+              const [],
             );
             weekendNormalOffset += 1;
           }
@@ -1284,15 +1458,40 @@ class _ScheduleGeneratorPanelState
               'on_call',
               nextWeekPmUserId,
               day,
+              nextWeekRelievers,
             );
           }
         } else {
           if (amUserId != null) {
-            _tryAddDraft(draft, existing, templates, 'am', amUserId, day);
+            _tryAddDraft(
+              draft,
+              existing,
+              templates,
+              'am',
+              amUserId,
+              day,
+              const [],
+            );
           }
           if (pmUserId != null) {
-            _tryAddDraft(draft, existing, templates, 'pm', pmUserId, day);
-            _tryAddDraft(draft, existing, templates, 'on_call', pmUserId, day);
+            _tryAddDraft(
+              draft,
+              existing,
+              templates,
+              'pm',
+              pmUserId,
+              day,
+              pmRelievers,
+            );
+            _tryAddDraft(
+              draft,
+              existing,
+              templates,
+              'on_call',
+              pmUserId,
+              day,
+              pmRelievers,
+            );
           }
 
           final assignedToday = <String?>[
@@ -1301,7 +1500,15 @@ class _ScheduleGeneratorPanelState
           ].whereType<String>().toSet();
           for (final profile in staff) {
             if (assignedToday.contains(profile.id)) continue;
-            _tryAddDraft(draft, existing, templates, 'normal', profile.id, day);
+            _tryAddDraft(
+              draft,
+              existing,
+              templates,
+              'normal',
+              profile.id,
+              day,
+              const [],
+            );
           }
         }
       }
@@ -1319,6 +1526,7 @@ class _ScheduleGeneratorPanelState
     String shiftType,
     String userId,
     DateTime day,
+    List<String> relieverIds,
   ) {
     final template = templates[_normalizeShiftType(shiftType)]!;
     final start = template.buildStart(day);
@@ -1329,6 +1537,7 @@ class _ScheduleGeneratorPanelState
       shiftType: shiftType,
       startTime: start,
       endTime: end,
+      relieverIds: relieverIds,
     );
 
     if (_hasConflict(candidate, draft, existing)) {
@@ -1364,6 +1573,16 @@ class _ScheduleGeneratorPanelState
     return defaultIndex % staff.length;
   }
 
+  List<String> _buildRelievers(int primaryIndex, List<Profile> staff) {
+    if (staff.length <= 1) return const [];
+    final relievers = <String>[];
+    for (var offset = 1; offset < staff.length; offset += 1) {
+      relievers.add(staff[(primaryIndex + offset) % staff.length].id);
+      if (relievers.length == 3) break;
+    }
+    return relievers;
+  }
+
   bool _hasConflict(
     _DraftSchedule candidate,
     List<_DraftSchedule> drafts,
@@ -1545,11 +1764,11 @@ class _SwapRequestsPanel extends ConsumerWidget {
     final profilesAsync = ref.watch(profilesProvider);
     final currentUserId = ref.watch(currentUserIdProvider);
 
-    final scheduleById = {
+    final Map<String, DutySchedule> scheduleById = {
       for (final schedule in schedulesAsync.valueOrNull ?? [])
         schedule.id: schedule,
     };
-    final profileById = {
+    final Map<String, Profile> profileById = {
       for (final profile in profilesAsync.valueOrNull ?? [])
         profile.id: profile,
     };
@@ -1577,6 +1796,9 @@ class _SwapRequestsPanel extends ConsumerWidget {
             final subtitle = schedule == null
                 ? 'Shift not found'
                 : '${_shiftLabel(schedule.shiftType)} · ${_formatDate(schedule.startTime)} · ${_formatTime(schedule.startTime)}';
+            final relieverLabels = schedule == null
+                ? const <String>[]
+                : _relieverLabelsFromIds(schedule.relieverIds, profileById);
 
             final isPending = item.status == 'pending';
             final canRespond =
@@ -1600,6 +1822,25 @@ class _SwapRequestsPanel extends ConsumerWidget {
                     const SizedBox(height: 6),
                     Text('Status: ${item.status}'),
                     const SizedBox(height: 12),
+                    if (relieverLabels.isNotEmpty)
+                      ExpansionTile(
+                        tilePadding: EdgeInsets.zero,
+                        title: const Text('Relievers'),
+                        children: [
+                          for (final label in relieverLabels)
+                            Align(
+                              alignment: Alignment.centerLeft,
+                              child: Padding(
+                                padding: const EdgeInsets.only(
+                                  left: 8,
+                                  right: 8,
+                                  bottom: 6,
+                                ),
+                                child: Text(label),
+                              ),
+                            ),
+                        ],
+                      ),
                     Row(
                       children: [
                         if (canRespond) ...[
@@ -1703,4 +1944,18 @@ class _SwapRequestsPanel extends ConsumerWidget {
     final weekday = weekdays[value.weekday - 1];
     return '$weekday, $month $day, ${value.year}';
   }
+
+  List<String> _relieverLabelsFromIds(
+    List<String> relieverIds,
+    Map<String, Profile> profileById,
+  ) {
+    if (relieverIds.isEmpty) return const [];
+    return relieverIds
+        .map(
+          (id) => profileById[id]?.fullName.isNotEmpty == true
+              ? profileById[id]!.fullName
+              : id,
+        )
+        .toList();
+  }
 }

lib/utils/app_time.dart

@@ -0,0 +1,30 @@
+import 'package:timezone/data/latest.dart' as tz;
+import 'package:timezone/timezone.dart' as tz;
+
+class AppTime {
+  static bool _initialized = false;
+
+  static void initialize({String location = 'Asia/Manila'}) {
+    if (_initialized) return;
+    tz.initializeTimeZones();
+    tz.setLocalLocation(tz.getLocation(location));
+    _initialized = true;
+  }
+
+  static DateTime now() {
+    return tz.TZDateTime.now(tz.local);
+  }
+
+  static DateTime nowUtc() {
+    return now().toUtc();
+  }
+
+  static DateTime toAppTime(DateTime value) {
+    final utc = value.isUtc ? value : value.toUtc();
+    return tz.TZDateTime.from(utc, tz.local);
+  }
+
+  static DateTime parse(String value) {
+    return toAppTime(DateTime.parse(value));
+  }
+}

pubspec.lock

@@ -821,6 +821,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.7"
+  timezone:
+    dependency: "direct main"
+    description:
+      name: timezone
+      sha256: "2236ec079a174ce07434e89fcd3fcda430025eb7692244139a9cf54fdcf1fc7d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4"
   typed_data:
     dependency: transitive
     description:

pubspec.yaml

@@ -17,6 +17,7 @@ dependencies:
   google_fonts: ^6.2.1
   audioplayers: ^6.1.0
   geolocator: ^13.0.1
+  timezone: ^0.9.4
 
 dev_dependencies:
   flutter_test: