feat-tickets (#14)

Reviewed-on: #14
Co-authored-by: mark-cachy <marco@catelli.it>
Co-committed-by: mark-cachy <marco@catelli.it>

lib/features/tickets/blocs/ticket_list_cubit.dart

@@ -0,0 +1,79 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flux/features/tickets/models/ticket_model.dart';
+import 'package:flux/features/tickets/data/ticket_repository.dart';
+import 'package:get_it/get_it.dart';
+import 'ticket_list_state.dart';
+
+class TicketListCubit extends Cubit<TicketListState> {
+  final TicketRepository _repository = GetIt.I.get<TicketRepository>();
+  static const int _limit = 20; // Paginazione a blocchi di 20
+
+  TicketListCubit() : super(const TicketListState()) {
+    fetchTickets(reset: true);
+  }
+
+  /// Recupera i ticket. Se reset = true, svuota la lista e riparte da offset 0.
+  Future<void> fetchTickets({bool reset = false}) async {
+    if (state.isLoading) return;
+    if (!reset && state.hasReachedMax) return;
+
+    emit(
+      state.copyWith(
+        isLoading: true,
+        errorMessage: '',
+        tickets: reset ? [] : state.tickets,
+      ),
+    );
+
+    try {
+      final currentOffset = reset ? 0 : state.tickets.length;
+
+      final newTickets = await _repository.fetchStoreTickets(
+        offset: currentOffset,
+        limit: _limit,
+        searchTerm: state.searchTerm,
+        dateRange: state.dateRange,
+        statusFilter: state.statusFilter,
+        ticketTypeFilter: state.ticketTypeFilter,
+        staffIdFilter: state.staffIdFilter,
+      );
+
+      emit(
+        state.copyWith(
+          tickets: reset ? newTickets : [...state.tickets, ...newTickets],
+          isLoading: false,
+          hasReachedMax: newTickets.length < _limit,
+        ),
+      );
+    } catch (e) {
+      emit(state.copyWith(isLoading: false, errorMessage: e.toString()));
+    }
+  }
+
+  /// Aggiorna i filtri e ricarica tutto da zero
+  void updateFilters({
+    String? searchTerm,
+    DateTimeRange? dateRange,
+    TicketStatus? statusFilter,
+    TicketType? ticketTypeFilter,
+    String? staffIdFilter,
+    bool clearSearch = false,
+    bool clearDate = false,
+    bool clearStatus = false,
+  }) {
+    emit(
+      state.copyWith(
+        searchTerm: searchTerm,
+        dateRange: dateRange,
+        statusFilter: statusFilter,
+        ticketTypeFilter: ticketTypeFilter,
+        staffIdFilter: staffIdFilter,
+        clearSearch: clearSearch,
+        clearDate: clearDate,
+        clearStatus: clearStatus,
+      ),
+    );
+    fetchTickets(reset: true); // Applica i filtri e ricarica
+  }
+}