w

lib/features/tasks/blocs/task_list_cubit.dart

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+import 'dart:async';
+
+import 'package:equatable/equatable.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flux/features/tasks/data/task_repository.dart';
+import 'package:flux/features/tasks/models/task_model.dart';
+import 'package:flux/features/tasks/models/task_status.dart';
+import 'package:get_it/get_it.dart';
+import 'package:supabase_flutter/supabase_flutter.dart';
+
+part 'task_list_state.dart';
+
+class TaskListCubit extends Cubit<TaskListState> {
+  final SupabaseClient _supabase = GetIt.I.get<SupabaseClient>();
+  RealtimeChannel? _taskChannel;
+  final TaskRepository _repository = GetIt.I.get<TaskRepository>();
+
+  TaskListCubit() : super(TaskListState(status: TaskListStatus.initial));
+
+  // --- AVVIA L'ASCOLTO IN TEMPO REALE ---
+  void startListening({required String companyId, String? storeId}) {
+    emit(state.copyWith(status: TaskListStatus.loading));
+
+    // Facciamo subito il caricamento manuale, chiedendo SOLO quelli attivi
+    _loadTasks(companyId: companyId, storeId: storeId);
+
+    _taskChannel?.unsubscribe();
+
+    _taskChannel = _supabase
+        .channel('public:tasks_company_$companyId')
+        .onPostgresChanges(
+          event: PostgresChangeEvent.all,
+          schema: 'public',
+          table: 'tasks',
+          filter: PostgresChangeFilter(
+            type: PostgresChangeFilterType.eq,
+            column: 'company_id',
+            value: companyId,
+          ),
+          callback: (payload) {
+            // Ricarica la lista applicando sempre i filtri di stato
+            _loadTasks(companyId: companyId, storeId: storeId);
+          },
+        );
+
+    _taskChannel?.subscribe();
+  }
+
+  // --- HELPER DI CARICAMENTO ---
+  Future<void> _loadTasks({required String companyId, String? storeId}) async {
+    try {
+      final tasks = await _repository.getTasks(
+        companyId: companyId,
+        storeId: storeId,
+        // CHICCA: Passiamo solo gli stati attivi!
+        statuses: [TaskStatus.open, TaskStatus.inProgress],
+      );
+
+      emit(
+        state.copyWith(
+          status: TaskListStatus.success,
+          tasks: tasks,
+          errorMessage: null,
+        ),
+      );
+    } catch (e) {
+      emit(
+        state.copyWith(
+          status: TaskListStatus.failure,
+          errorMessage: e.toString(),
+        ),
+      );
+    }
+  }
+
+  // --- OPERAZIONI MANUALI ---
+  // (Le lasciamo gestire al repository o le metti qui se preferisci,
+  // tanto il risultato lo vedrai magicamente aggiornato dallo stream sopra!)
+
+  /*
+  Future<void> markAsCompleted(String taskId) async { ... }
+  Future<void> deleteTask(String taskId) async { ... }
+  */
+
+  // --- PULIZIA FONDAMENTALE ---
+  @override
+  Future<void> close() {
+    // Chiudiamo il rubinetto quando usciamo dalla pagina per non intasarci la memoria!
+    _taskChannel?.unsubscribe();
+    return super.close();
+  }
+}

lib/features/tasks/blocs/task_list_state.dart

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+part of 'task_list_cubit.dart';
+
+enum TaskListStatus { initial, loading, success, failure }
+
+class TaskListState extends Equatable {
+  final TaskListStatus status;
+  final List<TaskModel> tasks;
+  final String? errorMessage;
+
+  const TaskListState({
+    this.status = TaskListStatus.initial,
+    this.tasks = const [],
+    this.errorMessage,
+  });
+
+  TaskListState copyWith({
+    TaskListStatus? status,
+    List<TaskModel>? tasks,
+    String? errorMessage,
+  }) {
+    return TaskListState(
+      status: status ?? this.status,
+      tasks: tasks ?? this.tasks,
+      // Se lo status è success o loading, puliamo eventuali errori precedenti
+      errorMessage: errorMessage ?? this.errorMessage,
+    );
+  }
+
+  @override
+  List<Object?> get props => [status, tasks, errorMessage];
+}

lib/features/tasks/data/task_repository.dart

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+import 'package:flux/features/tasks/models/task_status.dart';
+import 'package:supabase_flutter/supabase_flutter.dart';
+// Sostituisci con i percorsi corretti di FLUX
+import 'package:flux/features/tasks/models/task_model.dart';
+
+class TaskRepository {
+  final SupabaseClient _supabase;
+
+  TaskRepository({SupabaseClient? supabase})
+    : _supabase = supabase ?? Supabase.instance.client;
+
+  // --- RECUPERO DEI TASK FILTRATI ---
+  Future<List<TaskModel>> getTasks({
+    required String companyId,
+    String? storeId,
+    String? staffId,
+    List<TaskStatus>? statuses,
+    int? limit,
+  }) async {
+    try {
+      // 1. FASE FILTRI (PostgrestFilterBuilder)
+      var filterBuilder = _supabase
+          .from('tasks')
+          .select('*, assigned_to_staff:staff_members!task_assignments(*)')
+          .eq('company_id', companyId);
+
+      if (storeId != null) {
+        filterBuilder = filterBuilder.or(
+          'store_id.eq.$storeId,store_id.is.null',
+        );
+      }
+
+      if (staffId != null) {
+        filterBuilder = filterBuilder.or(
+          'staff_id.eq.$staffId,staff_id.is.null',
+        );
+      }
+
+      if (statuses != null && statuses.isNotEmpty) {
+        final statusValues = statuses.map((s) => s.toValue).toList();
+        filterBuilder = filterBuilder.inFilter('status', statusValues);
+      }
+
+      // 2. FASE TRASFORMAZIONI (PostgrestTransformBuilder)
+      // L'ordinamento lo facciamo sempre, quindi partiamo da qui
+      var transformBuilder = filterBuilder
+          .order('due_date', ascending: true, nullsFirst: false)
+          .order('created_at', ascending: false, nullsFirst: false);
+
+      // Aggiungiamo il limite se richiesto
+      if (limit != null) {
+        transformBuilder = transformBuilder.limit(limit);
+      }
+
+      // 3. ESECUZIONE DELLA QUERY
+      final response = await transformBuilder;
+
+      return (response as List).map((json) => TaskModel.fromMap(json)).toList();
+    } catch (e) {
+      throw Exception('Errore nel recupero dei task: $e');
+    }
+  }
+
+  // --- 2. CREAZIONE DEL TASK ---
+  Future<TaskModel> createTask(TaskModel task) async {
+    try {
+      final taskData = task.toMap();
+
+      // Rimuoviamo l'array prima di inviare i dati alla tabella principale,
+      // la "Strada C" impone che la verità assoluta derivi dalla tabella di giunzione!
+      taskData.remove('assigned_to_ids');
+
+      // 1. Inseriamo il record base nella tabella tasks
+      final response = await _supabase
+          .from('tasks')
+          .insert(taskData)
+          .select()
+          .single();
+
+      final newTask = TaskModel.fromMap(response);
+
+      // 2. Se l'utente ha assegnato il task a qualcuno, popoliamo la giunzione
+      if (task.assignedToIds.isNotEmpty && newTask.id != null) {
+        await _syncAssignments(newTask.id!, task.assignedToIds);
+
+        // 3. Ricarichiamo il task appena creato per ottenere l'array e il JOIN aggiornati dal trigger!
+        return await getTaskById(newTask.id!);
+      }
+
+      return newTask;
+    } catch (e) {
+      throw Exception('Errore nella creazione del task: $e');
+    }
+  }
+
+  // --- 3. AGGIORNAMENTO DEL TASK ---
+  Future<TaskModel> updateTask(TaskModel task) async {
+    if (task.id == null)
+      throw Exception('ID Task mancante. Impossibile aggiornare.');
+
+    try {
+      final taskData = task.toMap();
+      taskData.remove(
+        'assigned_to_ids',
+      ); // Sempre via l'array dal body principale
+
+      // 1. Aggiorniamo i dati base del task (titolo, stato, scadenza, ecc.)
+      await _supabase.from('tasks').update(taskData).eq('id', task.id!);
+
+      // 2. Sincronizziamo in modo distruttivo gli assegnatari nella tabella di giunzione
+      await _syncAssignments(task.id!, task.assignedToIds);
+
+      // 3. Ritorniamo il modello fresco di DB
+      return await getTaskById(task.id!);
+    } catch (e) {
+      throw Exception('Errore nell\'aggiornamento del task: $e');
+    }
+  }
+
+  // --- 4. ELIMINAZIONE DEL TASK ---
+  Future<void> deleteTask(String taskId) async {
+    try {
+      // Eliminando il task, se la Foreign Key su Supabase ha "ON DELETE CASCADE",
+      // le righe nella tabella di giunzione si distruggeranno da sole in automatico!
+      await _supabase.from('tasks').delete().eq('id', taskId);
+    } catch (e) {
+      throw Exception('Errore nell\'eliminazione del task: $e');
+    }
+  }
+
+  // --- HELPER: RECUPERO SINGOLO TASK ---
+  Future<TaskModel> getTaskById(String taskId) async {
+    try {
+      final response = await _supabase
+          .from('tasks')
+          .select('*, assigned_to_staff:staff!task_assignments(*)')
+          .eq('id', taskId)
+          .single();
+      return TaskModel.fromMap(response);
+    } catch (e) {
+      throw Exception('Errore nel recupero del singolo task: $e');
+    }
+  }
+
+  // --- HELPER: SINCRONIZZAZIONE DELLA TABELLA DI GIUNZIONE ---
+  Future<void> _syncAssignments(String taskId, List<String> staffIds) async {
+    // TECNICA "WIPE & REPLACE":
+    // Invece di capire chi è stato aggiunto e chi tolto, eliminiamo tutti i record
+    // di questo task e li reinseriamo. È fulmineo ed esclude a priori bug di disallineamento.
+
+    // 1. Facciamo piazza pulita
+    await _supabase.from('task_assignments').delete().eq('task_id', taskId);
+
+    // 2. Inseriamo le nuove assegnazioni (se ce ne sono)
+    if (staffIds.isNotEmpty) {
+      final List<Map<String, dynamic>> assignments = staffIds
+          .map((staffId) => {'task_id': taskId, 'staff_id': staffId})
+          .toList();
+
+      await _supabase.from('task_assignments').insert(assignments);
+    }
+  }
+}

lib/features/tasks/models/task_model.dart

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+import 'package:equatable/equatable.dart';
+import 'package:flux/features/master_data/staff/models/staff_member_model.dart';
+import 'package:flux/features/tasks/models/task_status.dart';
+
+class TaskModel extends Equatable {
+  final String? id;
+  final String? companyId;
+  final String title;
+  final String? description;
+  final List<String> assignedToIds;
+  final List<StaffMemberModel> assignedToStaff; // I dati completi dal JOIN
+  final String? createdById;
+  final DateTime? dueDate;
+  final TaskStatus status;
+  final DateTime? createdAt;
+  final String? storeId;
+
+  const TaskModel({
+    this.id,
+    this.companyId,
+    required this.title,
+    this.description,
+    this.assignedToIds = const [],
+    this.assignedToStaff = const [],
+    this.createdById,
+    this.dueDate,
+    this.status = TaskStatus.open,
+    this.createdAt,
+    this.storeId,
+  });
+
+  // --- FACTORY: MODELLO VUOTO (Per le creazioni) ---
+  factory TaskModel.empty({String? companyId, String? createdById}) {
+    return TaskModel(
+      companyId: companyId,
+      title: '',
+      description: '',
+      assignedToIds: const [],
+      assignedToStaff: const [],
+      createdById: createdById,
+      status: TaskStatus.open,
+      createdAt: DateTime.now(),
+    );
+  }
+
+  // --- EQUATABLE: PROPRIETÀ DA COMPARARE ---
+  @override
+  List<Object?> get props => [
+    id,
+    companyId,
+    title,
+    description,
+    assignedToIds,
+    assignedToStaff,
+    createdById,
+    dueDate,
+    status,
+    createdAt,
+    storeId,
+  ];
+
+  // --- COPY WITH ---
+  TaskModel copyWith({
+    String? id,
+    String? companyId,
+    String? title,
+    String? description,
+    List<String>? assignedToIds,
+    List<StaffMemberModel>? assignedToStaff,
+    String? createdById,
+    DateTime? dueDate,
+    bool clearDueDate = false, // Flag ninja per resettare la scadenza
+    TaskStatus? status,
+    DateTime? createdAt,
+    String? storeId,
+    bool clearStoreId = false,
+  }) {
+    return TaskModel(
+      id: id ?? this.id,
+      companyId: companyId ?? this.companyId,
+      title: title ?? this.title,
+      description: description ?? this.description,
+      assignedToIds: assignedToIds ?? this.assignedToIds,
+      assignedToStaff: assignedToStaff ?? this.assignedToStaff,
+      createdById: createdById ?? this.createdById,
+      dueDate: clearDueDate ? null : (dueDate ?? this.dueDate),
+      status: status ?? this.status,
+      createdAt: createdAt ?? this.createdAt,
+      storeId: clearStoreId ? null : (storeId ?? this.storeId),
+    );
+  }
+
+  // --- SERIALIZZAZIONE DA SUPABASE ---
+  factory TaskModel.fromMap(Map<String, dynamic> json) {
+    // 1. Gestiamo l'array nullo di Supabase trasformandolo in lista vuota
+    final List<String> parsedAssignedToIds = json['assigned_to_ids'] != null
+        ? List<String>.from(json['assigned_to_ids'])
+        : [];
+
+    // 2. Mappiamo il JOIN dello staff, se presente
+    List<StaffMemberModel> parsedAssignedToStaff = [];
+    if (json['assigned_to_staff'] != null) {
+      final staffList = json['assigned_to_staff'] as List;
+      parsedAssignedToStaff = staffList
+          .map((s) => StaffMemberModel.fromMap(s as Map<String, dynamic>))
+          .toList();
+    }
+
+    return TaskModel(
+      id: json['id'] as String?,
+      companyId: json['company_id'] as String?,
+      title: json['title'] as String? ?? '',
+      description: json['description'] as String?,
+      assignedToIds: parsedAssignedToIds,
+      assignedToStaff: parsedAssignedToStaff,
+      createdById: json['created_by_id'] as String?,
+      dueDate: json['due_date'] != null
+          ? DateTime.parse(json['due_date'] as String).toLocal()
+          : null,
+      status: TaskStatusExtension.fromString(json['status'] as String?),
+      createdAt: json['created_at'] != null
+          ? DateTime.parse(json['created_at'] as String).toLocal()
+          : null,
+      storeId: json['store_id'] as String?,
+    );
+  }
+
+  // --- SERIALIZZAZIONE VERSO SUPABASE ---
+  Map<String, dynamic> toMap() {
+    return {
+      if (id != null) 'id': id,
+      if (companyId != null) 'company_id': companyId,
+      'title': title,
+      if (description != null) 'description': description,
+      // Passiamo l'array vuoto se non ci sono assegnazioni
+      'assigned_to_ids': assignedToIds.isEmpty ? null : assignedToIds,
+      if (createdById != null) 'created_by_id': createdById,
+      'due_date': dueDate?.toUtc().toIso8601String(),
+      'status': status.toValue,
+      'store_id': storeId,
+    };
+  }
+}

lib/features/tasks/models/task_status.dart

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+// Enum per lo stato del task
+enum TaskStatus { open, inProgress, completed }
+
+extension TaskStatusExtension on TaskStatus {
+  String get name {
+    switch (this) {
+      case TaskStatus.open:
+        return 'Da Iniziare';
+      case TaskStatus.inProgress:
+        return 'In Lavorazione';
+      case TaskStatus.completed:
+        return 'Completato';
+    }
+  }
+
+  // Comodo per mappare da Supabase
+  static TaskStatus fromString(String? status) {
+    switch (status) {
+      case 'in_progress':
+        return TaskStatus.inProgress;
+      case 'completed':
+        return TaskStatus.completed;
+      case 'open':
+      default:
+        return TaskStatus.open;
+    }
+  }
+
+  // Comodo per salvare su Supabase
+  String get toValue {
+    switch (this) {
+      case TaskStatus.open:
+        return 'open';
+      case TaskStatus.inProgress:
+        return 'in_progress';
+      case TaskStatus.completed:
+        return 'completed';
+    }
+  }
+}