import 'dart:developer';

import 'package:easy_debounce/easy_debounce.dart';
import 'package:eatvio_app/core/utils/toasts.dart';
import 'package:eatvio_app/features/diets/repositories/diet_repository.dart';
import 'package:eatvio_app/features/plans/presentation/cubit/about_plan_state.dart';
import 'package:eatvio_app/features/plans/repositories/plan_repository.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class AboutPlanCubit extends Cubit<AboutPlanState> {
  final PlanRepository planRepository;
  AboutPlanCubit({required this.planRepository}) : super(AboutPlanState.initial());

  Future<void> getPlan(String slug) async {
    try {
      final plan = await planRepository.getPlan(slug);
      emit(state.copyWith(planModel: plan, error: null));
    } catch (e, stackTrace) {
      log(e.toString(), stackTrace: stackTrace);
      emit(state.copyWith(error: e.toString()));
    }
  }

  Future<void> getPlanWithLoading(String slug) async {
    try {
      emit(state.copyWith(isLoading: true));
      final plan = await planRepository.getPlan(slug);
      emit(
        state.copyWith(
          planModel: plan,
          error: null,
          isLoading: false,
        ),
      );
    } catch (e, stackTrace) {
      log(e.toString(), stackTrace: stackTrace);
      emit(state.copyWith(error: e.toString(), isLoading: false));
    }
  }

  void choseOption(int index) {
    emit(state.copyWith(chosenOptionIndex: index));
  }

  Future<void> likePlan({required int? index, required String slug}) async {
    final currentPlan = state.planModel;
    if (currentPlan == null) return;
    if (currentPlan.wasLikedByMe) {
      emit(state.copyWith(planModel: currentPlan.copyWith(wasLikedByMe: false, totalLikes: currentPlan.totalLikes - 1), error: null));
      if (index != null) {
        planRepository.emitLikesStateToFeed(LikesState(wasLikedByMe: false, totalLikes: currentPlan.totalLikes - 1, index: index));
      }
    } else {
      emit(state.copyWith(planModel: currentPlan.copyWith(wasLikedByMe: true, totalLikes: currentPlan.totalLikes + 1), error: null));
      if (index != null) {
        planRepository.emitLikesStateToFeed(LikesState(wasLikedByMe: true, totalLikes: currentPlan.totalLikes + 1, index: index));
      }
    }

    EasyDebounce.debounce(
      'like_plan_$slug',
      Duration(seconds: 1),
      () async {
        try {
          await planRepository.likePlan(slug);
        } catch (e) {
          log(e.toString());
          if (index != null) {
            planRepository.emitLikesStateToFeed(LikesState(wasLikedByMe: currentPlan.wasLikedByMe, totalLikes: currentPlan.totalLikes, index: index));
          }
          emit(state.copyWith(planModel: currentPlan, error: null));
        }
      },
    );
  }

  Future<void> addToFavorite({required String slug, required int? index}) async {
    final currentPlan = state.planModel;
    if (currentPlan == null) return;

    emit(state.copyWith(planModel: currentPlan.copyWith(isFavorite: true)));
    if (index != null) {
      planRepository.emitFavoriteStateToFeed(FavoriteState(isFavorite: true, index: index));
    }
    EasyDebounce.debounce(
      'add_or_remove_plan_to_favorites',
      Duration(seconds: 1),
      () async {
        try {
          await planRepository.addToFavorite(slug);
        } catch (e) {
          log(e.toString());
          showErrorToast('Произошла ошибка. Попробуйте ещё раз через некоторое время');
          if (index != null) {
            planRepository.emitFavoriteStateToFeed(FavoriteState(isFavorite: currentPlan.isFavorite, index: index));
          }
          emit(state.copyWith(planModel: currentPlan, error: null));
        }
      },
    );
  }

  Future<void> removeFromFavorite({required String slug, required int? index}) async {
    final currentPlan = state.planModel;
    if (currentPlan == null) return;

    emit(state.copyWith(planModel: currentPlan.copyWith(isFavorite: false)));
    if (index != null) {
      planRepository.emitFavoriteStateToFeed(FavoriteState(isFavorite: false, index: index));
    }
    EasyDebounce.debounce(
      'add_or_remove_plan_to_favorites',
      Duration(seconds: 1),
      () async {
        try {
          await planRepository.removeFromFavorite(slug);
        } catch (e) {
          log(e.toString());
          showErrorToast('Произошла ошибка. Попробуйте ещё раз через некоторое время');
          if (index != null) {
            planRepository.emitFavoriteStateToFeed(FavoriteState(isFavorite: currentPlan.isFavorite, index: index));
          }
          emit(state.copyWith(planModel: currentPlan, error: null));
        }
      },
    );
  }
}