import 'dart:async';

import 'package:bloc/bloc.dart';
import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:hadi_hoda_flutter/core/constants/my_constants.dart';
import 'package:hadi_hoda_flutter/core/params/no_params.dart';
import 'package:hadi_hoda_flutter/core/routers/my_routes.dart';
import 'package:hadi_hoda_flutter/core/status/base_status.dart';
import 'package:hadi_hoda_flutter/core/utils/local_storage.dart';
import 'package:hadi_hoda_flutter/core/utils/my_context.dart';
import 'package:hadi_hoda_flutter/features/guider/domain/usecases/get_first_level_usecase.dart';
import 'package:hadi_hoda_flutter/features/guider/presentation/bloc/guider_event.dart';
import 'package:hadi_hoda_flutter/features/guider/presentation/bloc/guider_state.dart';
import 'package:hadi_hoda_flutter/features/level/domain/entity/level_entity.dart';
import 'package:hadi_hoda_flutter/features/question/domain/entity/question_entity.dart';
import 'package:showcaseview/showcaseview.dart';

class GuiderBloc extends Bloc<GuiderEvent, GuiderState> {
  /// ------------constructor------------
  GuiderBloc(this._getFirstLevelUseCase) : super(const GuiderState()) {
    registerShowCase();
    on<GetFirstLevelEvent>(_getFirstLevelEvent);
  }

  @override
  Future<void> close() {
    unRegisterShowCase();
    animationController.dispose();
    return super.close();
  }

  /// ------------UseCases------------
  final GetFirstLevelUseCase _getFirstLevelUseCase;

  /// ------------Variables------------
  final Map<String, GlobalKey> showCaseKey = {
    'answer_key_0': GlobalKey(),
    'answer_key_1': GlobalKey(),
    'answer_key_2': GlobalKey(),
    'answer_key_3': GlobalKey(),
    'notif_key_0': GlobalKey(),
    'notif_key_1': GlobalKey(),
    'notif_key_2': GlobalKey(),
    'notif_key_3': GlobalKey(),
    'stepper_key': GlobalKey(),
    'hadith_key': GlobalKey(),
    'guide_key': GlobalKey(),
  };
  String? id;

  /// ------------Controllers------------
  late final AnimationController animationController;

  /// ------------Functions------------
  void registerShowCase() {
    try {
      ShowcaseView.register(
        onStart: (showcaseIndex, key) {
          LocalStorage.saveData(key: MyConstants.firstShowcase, value: 'true');
        },
        onDismiss: (onDismiss) {
          MyContext.get.goNamed(
            Routes.questionPage,
            pathParameters: {'id': id ?? ''},
          );
        },
        onFinish: () {
          MyContext.get.goNamed(
            Routes.questionPage,
            pathParameters: {'id': id ?? ''},
          );
        },
      );
    } catch (_) {}
  }

  void unRegisterShowCase() {
    try {
      ShowcaseView.get().unregister();
    } catch (_) {}
  }

  void startShowcase() {
    if (LocalStorage.readData(key: MyConstants.firstShowcase) != 'true') {
      try {
        ShowcaseView.get().startShowCase([
          showCaseKey['answer_key_1']!,
          showCaseKey['notif_key_0']!,
          showCaseKey['stepper_key']!,
          showCaseKey['hadith_key']!,
          showCaseKey['guide_key']!,
        ]);
      } catch (_) {}
    }
  }

  /// ------------Event Calls------------

  FutureOr<void> _getFirstLevelEvent(
    GetFirstLevelEvent event,
    Emitter<GuiderState> emit,
  ) async {
    id = event.id;
    await _getFirstLevelUseCase(NoParams()).then(
      (value) => value.fold((data) async {
        final LevelEntity level = LevelEntity(
          id: data.id,
          order: data.order,
          title: data.title,
          questions: [
            ...?data.questions,
            QuestionEntity(order: (data.questions?.length ?? 0) + 1),
          ],
        );
        emit(
          state.copyWith(
            getQuestionStatus: BaseComplete(''),
            levelEntity: level,
            currentQuestion: data.questions?.first,
          ),
        );
        await Future.delayed(Duration(milliseconds: 300), () {
          animationController.forward().then((value) {
            startShowcase();
          });
        });
      }, (error) {}),
    );
  }
}