wt1.1a flutter_bloc

lib/bloc/menu/menu_bloc.dart

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+import 'dart:async';
+
+import 'package:aitrainer_app/model/workout_tree.dart';
+import 'package:aitrainer_app/repository/menu_tree_repository.dart';
+import 'package:bloc/bloc.dart';
+import 'package:equatable/equatable.dart';
+import 'package:meta/meta.dart';
+
+part 'menu_event.dart';
+part 'menu_state.dart';
+
+class MenuBloc extends Bloc<MenuEvent, MenuState> {
+  final MenuTreeRepository menuTreeRepository;
+  int parent;
+
+  MenuBloc({this.menuTreeRepository}) : super(MenuInitial()) {
+    parent = 0;
+  }
+
+  @override
+  Stream<MenuState> mapEventToState(
+    MenuEvent event,
+  ) async* {
+    try {
+      if ( event is MenuCreate ) {
+        yield MenuLoading();
+        await menuTreeRepository.createTree();
+        yield MenuReady();
+      } else if (event is MenuTreeDown) {
+        // get child menus or exercises
+        yield MenuLoading();
+        parent = event.parent;
+        menuTreeRepository.getBranch(event.parent);
+        yield MenuReady();
+      } else if (event is MenuTreeUp) {
+        yield MenuLoading();
+        // get parent menus or exercises
+        parent = event.parent;
+        menuTreeRepository.getBranch(parent);
+
+        yield MenuReady();
+      } else if (event is MenuClickExercise) {
+        yield MenuLoading();
+        // get exercise page
+        yield MenuReady();
+      }
+    } on Exception catch(ex) {
+      yield MenuError(message: ex.toString());
+    }
+  }
+}

lib/bloc/menu/menu_event.dart

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+part of 'menu_bloc.dart';
+
+@immutable
+abstract class MenuEvent extends Equatable {
+  const MenuEvent();
+
+  @override
+  List<Object> get props => [];
+}
+
+class MenuCreate extends MenuEvent {
+  const MenuCreate();
+
+  @override
+  List<Object> get props => [];
+}
+
+class MenuTreeDown extends MenuEvent {
+  final int parent;
+  const MenuTreeDown({this.parent});
+
+  @override
+  List<Object> get props => [parent];
+}
+
+class MenuTreeUp extends MenuEvent {
+  final int parent;
+  const MenuTreeUp({this.parent});
+
+  @override
+  List<Object> get props => [parent];
+}
+
+class MenuClickExercise extends MenuEvent {
+  final int exerciseTypeId;
+  const MenuClickExercise({this.exerciseTypeId});
+
+  @override
+  List<Object> get props => [exerciseTypeId];
+}
+

lib/bloc/menu/menu_state.dart

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+part of 'menu_bloc.dart';
+
+@immutable
+abstract class MenuState extends Equatable  {
+  const MenuState();
+
+  @override
+  List<Object> get props => [];
+}
+
+class MenuInitial extends MenuState {
+  const MenuInitial();
+}
+
+class MenuLoading extends MenuState {
+
+}
+
+class MenuReady extends MenuState {
+  final WorkoutTree workoutTree;
+
+  const MenuReady({this.workoutTree});
+
+  @override
+  List<Object> get props => [workoutTree];
+}
+
+class MenuError extends MenuState {
+  final String message;
+  const MenuError({this.message});
+
+  @override
+  List<Object> get props => [message];
+}