import 'dart:async';
import 'package:aitrainer_app/model/exercise_plan_detail.dart';
import 'package:aitrainer_app/model/exercise_type.dart';
import 'package:aitrainer_app/model/workout_tree.dart';
import 'package:aitrainer_app/repository/exercise_plan_repository.dart';
import 'package:aitrainer_app/repository/exercise_repository.dart';
import 'package:aitrainer_app/repository/workout_tree_repository.dart';
import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';
import 'package:meta/meta.dart';

part 'exercise_plan_event.dart';

part 'exercise_plan_state.dart';

class ExercisePlanBloc extends Bloc<ExercisePlanEvent, ExercisePlanState> {
  final WorkoutTreeRepository menuTreeRepository;
  final ExerciseRepository exerciseRepository;
  final ExercisePlanRepository exercisePlanRepository = ExercisePlanRepository();
  int customerId;

  ExercisePlanBloc({this.exerciseRepository, this.menuTreeRepository}) : super(ExercisePlanInitial());

  Future<void> getData() async {
    exercisePlanRepository.setCustomerId(customerId);
    await exercisePlanRepository.getLastExercisePlan();
    await exercisePlanRepository.getExercisePlanDetails();
    menuTreeRepository.sortedTree = null;
    menuTreeRepository.sortByMuscleType();

    menuTreeRepository.sortedTree.forEach((key, value) {
      List<WorkoutTree> listWorkoutTree = value;
      listWorkoutTree.forEach((workoutTree) {
        workoutTree.selected = false;
        if (exercisePlanRepository.exercisePlanDetails.length > 0) {
          if (exercisePlanRepository.exercisePlanDetails[workoutTree.exerciseTypeId] != null) {
            //print("bingo");
            workoutTree.selected = true;
          }
        }
      });
    });
  }

  @override
  Stream<ExercisePlanState> mapEventToState(ExercisePlanEvent event) async* {
    try {
      if (event is ExercisePlanLoad) {
        yield ExercisePlanLoading();
        await this.getData();
        yield ExercisePlanReady();
      }
      if (event is ExercisePlanUpdate) {
        yield ExercisePlanLoading();
        WorkoutTree workoutTree = event.workoutTree;
        if (workoutTree != null) {
            exercisePlanRepository.addExerciseTypeToPlan(workoutTree.exerciseType);
            workoutTree.selected = true;
        }
        yield ExercisePlanReady();
      } else if (event is ExercisePlanRemoveExercise) {
        yield ExercisePlanLoading();
        ExercisePlanDetail planDetail = event.exercisePlanDetail;
        exercisePlanRepository.removeExerciseTypeFromPlan(planDetail.exerciseType);
        this.menuTreeRepository.sortedTree.forEach((key, value) {
          List<WorkoutTree> listTreeItem = value;
          listTreeItem.forEach((element) {
            if ( element.exerciseType.exerciseTypeId == planDetail.exerciseTypeId) {
              element.selected = false;
            }
          });
        });
        yield ExercisePlanReady();
      } else if (event is ExercisePlanUpdateExercise) {
        yield ExercisePlanReady();
      } else if (event is ExercisePlanSave) {
        if (exercisePlanRepository.getExercisePlanDetailSize() == 0) {
          throw Exception("Please select an exercise");
        } else {
          yield ExercisePlanLoading();
          exercisePlanRepository.saveExercisePlan();
          yield ExercisePlanReady();
        }
      }
    } on Exception catch (e) {
      yield ExercisePlanError(message: e.toString());
    }
  }
}