tasq/lib/providers/leave_provider.dart

295 lines
9.0 KiB
Dart

import 'package:flutter/foundation.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:supabase_flutter/supabase_flutter.dart';
import '../models/leave_of_absence.dart';
import 'profile_provider.dart';
import 'supabase_provider.dart';
import 'stream_recovery.dart';
import 'realtime_controller.dart';
/// All visible leaves (own for standard, all for admin/dispatcher/it_staff).
///
/// Consumers should **not** treat every record as an active absence; the UI
/// layers (dashboard, logbook) explicitly filter to `status == 'approved'` and
/// verify the leave overlaps the current time. This prevents rejected or
/// pending applications from inadvertently influencing schedules or status
/// computations.
final leavesProvider = StreamProvider<List<LeaveOfAbsence>>((ref) {
final client = ref.watch(supabaseClientProvider);
final profileAsync = ref.watch(currentProfileProvider);
final profile = profileAsync.valueOrNull;
if (profile == null) return Stream.value(const <LeaveOfAbsence>[]);
final hasFullAccess =
profile.role == 'admin' ||
profile.role == 'dispatcher' ||
profile.role == 'it_staff';
final wrapper = StreamRecoveryWrapper<LeaveOfAbsence>(
stream: hasFullAccess
? client
.from('leave_of_absence')
.stream(primaryKey: ['id'])
.order('start_time', ascending: false)
: client
.from('leave_of_absence')
.stream(primaryKey: ['id'])
.eq('user_id', profile.id)
.order('start_time', ascending: false),
onPollData: () async {
final query = client.from('leave_of_absence').select();
final data = hasFullAccess
? await query.order('start_time', ascending: false)
: await query
.eq('user_id', profile.id)
.order('start_time', ascending: false);
return data.map(LeaveOfAbsence.fromMap).toList();
},
fromMap: LeaveOfAbsence.fromMap,
channelName: 'leave_of_absence',
onStatusChanged: ref.read(realtimeControllerProvider).handleChannelStatus,
);
ref.onDispose(wrapper.dispose);
return wrapper.stream.map((result) => result.data);
});
final leaveControllerProvider = Provider<LeaveController>((ref) {
final client = ref.watch(supabaseClientProvider);
return LeaveController(client);
});
class LeaveController {
LeaveController(this._client);
final SupabaseClient _client;
/// File a leave of absence for the current user.
/// Caller controls auto-approval based on role policy.
Future<void> fileLeave({
required String leaveType,
required String justification,
required DateTime startTime,
required DateTime endTime,
required bool autoApprove,
}) async {
final uid = _client.auth.currentUser!.id;
final payload = {
'user_id': uid,
'leave_type': leaveType,
'justification': justification,
'start_time': startTime.toIso8601String(),
'end_time': endTime.toIso8601String(),
'status': autoApprove ? 'approved' : 'pending',
'filed_by': uid,
};
final insertedRaw = await _client
.from('leave_of_absence')
.insert(payload)
.select()
.maybeSingle();
final Map<String, dynamic>? inserted = insertedRaw is Map<String, dynamic>
? insertedRaw
: null;
// If this was filed as pending, notify admins for approval
final status = payload['status'] as String;
if (status != 'pending') return;
try {
final adminIds = await _fetchRoleUserIds(
roles: const ['admin'],
excludeUserId: uid,
);
if (adminIds.isEmpty) return;
// Resolve actor display name for nicer push text
String actorName = 'Someone';
try {
final p = await _client
.from('profiles')
.select('full_name,display_name,name')
.eq('id', uid)
.maybeSingle();
if (p != null) {
if (p['full_name'] != null) {
actorName = p['full_name'].toString();
} else if (p['display_name'] != null) {
actorName = p['display_name'].toString();
} else if (p['name'] != null) {
actorName = p['name'].toString();
}
}
} catch (_) {}
final leaveId = (inserted ?? <String, dynamic>{})['id']?.toString() ?? '';
final title = 'Leave Filed for Approval';
final body = '$actorName filed a leave request that requires approval.';
final notificationId = (inserted ?? <String, dynamic>{})['id']
?.toString();
final dataPayload = <String, dynamic>{
'type': 'leave_filed',
'leave_id': leaveId,
...?(notificationId != null
? {'notification_id': notificationId}
: null),
};
await _client
.from('notifications')
.insert(
adminIds
.map(
(userId) => {
'user_id': userId,
'actor_id': uid,
'type': 'leave_filed',
'leave_id': leaveId,
},
)
.toList(),
);
final res = await _client.functions.invoke(
'send_fcm',
body: {
'user_ids': adminIds,
'title': title,
'body': body,
'data': dataPayload,
},
);
debugPrint('leave filing send_fcm result: $res');
} catch (e) {
debugPrint('leave filing send_fcm error: $e');
// Non-fatal: keep leave filing working even if send_fcm fails
}
}
/// Approve a leave request.
Future<void> approveLeave(String leaveId) async {
final userId = _client.auth.currentUser?.id;
if (userId == null) throw Exception('Not authenticated');
// Update status first; then notify the requester.
await _client
.from('leave_of_absence')
.update({'status': 'approved'})
.eq('id', leaveId);
// Notify requestor
await _notifyRequester(leaveId: leaveId, actorId: userId, approved: true);
}
/// Reject a leave request.
Future<void> rejectLeave(String leaveId) async {
final userId = _client.auth.currentUser?.id;
if (userId == null) throw Exception('Not authenticated');
await _client
.from('leave_of_absence')
.update({'status': 'rejected'})
.eq('id', leaveId);
// Notify requestor
await _notifyRequester(leaveId: leaveId, actorId: userId, approved: false);
}
Future<void> _notifyRequester({
required String leaveId,
required String actorId,
required bool approved,
}) async {
try {
final row = await _client
.from('leave_of_absence')
.select('user_id')
.eq('id', leaveId)
.maybeSingle();
// ignore: unnecessary_cast
final rowMap = row as Map<String, dynamic>?;
final userId = rowMap?['user_id']?.toString();
if (userId == null || userId.isEmpty) return;
String actorName = 'Someone';
try {
final p = await _client
.from('profiles')
.select('full_name,display_name,name')
.eq('id', actorId)
.maybeSingle();
if (p != null) {
if (p['full_name'] != null) {
actorName = p['full_name'].toString();
} else if (p['display_name'] != null) {
actorName = p['display_name'].toString();
} else if (p['name'] != null) {
actorName = p['name'].toString();
}
}
} catch (_) {}
final title = approved ? 'Leave Approved' : 'Leave Rejected';
final body = approved
? '$actorName approved your leave request.'
: '$actorName rejected your leave request.';
final dataPayload = <String, dynamic>{
'type': approved ? 'leave_approved' : 'leave_rejected',
'leave_id': leaveId,
};
await _client.from('notifications').insert({
'user_id': userId,
'actor_id': actorId,
'type': approved ? 'leave_approved' : 'leave_rejected',
'leave_id': leaveId,
});
await _client.functions.invoke(
'send_fcm',
body: {
'user_ids': [userId],
'title': title,
'body': body,
'data': dataPayload,
},
);
} catch (_) {
// non-fatal
}
}
/// Cancel an approved leave.
Future<void> cancelLeave(String leaveId) async {
await _client
.from('leave_of_absence')
.update({'status': 'cancelled'})
.eq('id', leaveId);
}
Future<List<String>> _fetchRoleUserIds({
required List<String> roles,
required String? excludeUserId,
}) async {
try {
final data = await _client
.from('profiles')
.select('id, role')
.inFilter('role', roles);
final rows = data as List<dynamic>;
final ids = rows
.map((row) => row['id'] as String?)
.whereType<String>()
.where((id) => id.isNotEmpty && id != excludeUserId)
.toList();
return ids;
} catch (_) {
return [];
}
}
}