notes cubit

lib/features/notes/blocs/notes_cubit.dart

@@ -0,0 +1,94 @@
+import 'dart:async';
+
+import 'package:equatable/equatable.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flux/core/blocs/session/session_cubit.dart';
+import 'package:flux/features/notes/data/notes_repository.dart';
+import 'package:flux/features/notes/models/note_model.dart';
+import 'package:get_it/get_it.dart';
+
+part 'notes_state.dart';
+
+class NotesCubit extends Cubit<NotesState> {
+  final NotesRepository _repository = GetIt.I.get<NotesRepository>();
+  String? get companyId => GetIt.I.get<SessionCubit>().state.company?.id;
+  String? get staffId =>
+      GetIt.I.get<SessionCubit>().state.currentStaffMember?.id;
+
+  StreamSubscription<void>? _subscription;
+
+  NotesCubit() : super(NotesState(status: NotesStatus.initial));
+
+  void stopListening() {
+    _subscription?.cancel();
+    _subscription = null;
+  }
+
+  void startListening() {
+    stopListening();
+
+    emit(state.copyWith(status: NotesStatus.loading));
+
+    // Primo caricamento
+    _loadNotesSilently();
+
+    // Inizio ascolto campanello
+    try {
+      _subscription = _repository
+          .notesStream(companyId: companyId!, currentStaffId: staffId!)
+          .listen((_) {
+            // Quando il campanello suona (qualcosa è cambiato a DB), ricarichiamo!
+            _loadNotesSilently();
+          });
+    } on Exception catch (e) {
+      debugPrint(e.toString());
+    }
+  }
+
+  Future<void> _loadNotesSilently() async {
+    try {
+      final notes = await _repository.getNotes();
+
+      emit(
+        state.copyWith(
+          status: NotesStatus.success,
+          notes: notes,
+          errorMessage: null,
+        ),
+      );
+    } catch (e) {
+      emit(
+        state.copyWith(status: NotesStatus.failure, errorMessage: e.toString()),
+      );
+    }
+  }
+
+  Future<void> saveNote(NoteModel note) async {
+    try {
+      await _repository.saveNote(note);
+      // Non serve fare l'emit! Ci pensa lo stream a far rimbalzare i dati aggiornati
+    } catch (e) {
+      emit(
+        state.copyWith(status: NotesStatus.failure, errorMessage: e.toString()),
+      );
+    }
+  }
+
+  Future<void> deleteNote(String noteId) async {
+    try {
+      await _repository.deleteNote(noteId);
+      // Non serve fare l'emit
+    } catch (e) {
+      emit(
+        state.copyWith(status: NotesStatus.failure, errorMessage: e.toString()),
+      );
+    }
+  }
+
+  @override
+  Future<void> close() {
+    stopListening();
+    return super.close();
+  }
+}