Add RocketsBloc

Author: ashtanko

lib/features/rockets/bloc/rockets_bloc.dart

@@ -0,0 +1,28 @@
+import 'package:bloc/bloc.dart';
+import 'package:flutter_bloc_app_template/index.dart';
+import 'package:flutter_bloc_app_template/repository/rocket_repository.dart';
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'rockets_bloc.freezed.dart';
+part 'rockets_event.dart';
+part 'rockets_state.dart';
+
+class RocketsBloc extends Bloc<RocketsEvent, RocketsState> {
+  RocketsBloc(this._repository) : super(const RocketsState.loading()) {
+    on<RocketsLoadEvent>((event, emit) async {
+      emit(const RocketsState.loading());
+      try {
+        final rockets = await _repository.getRockets();
+        if (rockets.isEmpty) {
+          emit(const RocketsState.empty());
+        } else {
+          emit(RocketsState.success(rockets: rockets));
+        }
+      } catch (e) {
+        emit(const RocketsState.error());
+      }
+    });
+  }
+
+  final RocketRepository _repository;
+}