import 'dart:async';

import 'package:eatvio_app/data/models/selectionPopupModel/selection_popup_model.dart';
import 'package:eatvio_app/features/diary/models/diary_model.dart';
import 'package:eatvio_app/features/diary/models/meal.dart';
import 'package:eatvio_app/features/diary/models/product.dart';
import 'package:eatvio_app/features/diary/presentation/bloc/diary_state.dart';
import 'package:eatvio_app/features/diary/repositories/diary_repository.dart';
import 'package:equatable/equatable.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:image_picker/image_picker.dart';
import 'package:intl/intl.dart';

part 'diary_event.dart';

/// A bloc that manages the state of a Diary according to the event that is dispatched to it.
class DiaryBloc extends Bloc<DiaryEvent, DiaryState> {
  final DiaryRepository diaryRepository;

  DiaryBloc({required this.diaryRepository}) : super(const DiaryState.loading()) {
    on<LoadDiary>(loadDiary);
    on<LoadDiaryById>(loadDiaryById);
    on<ChangeSatiety>(_changeSatiety); // пользователь нажимает на шкалу сытости
    on<ChangeMood>(_changeMood); // пользователь нажимает на шкалу настроения
    on<ChangeMealTime>(_changeMealTime); // пользовательяет времяа пиши
    on<ChangeMeal>(_changeMeal);
    on<ChangePortion>(_changePortion);
    on<WakeupEvent>(_changeWakeup); // пользователь выбирает время пробуждения
    on<RetireEvent>(_changeRetire); // пользователь выбирает время отхода ко сну
    on<ToggleMoodExpandedEvent>(_toggleMood);
    on<ToggleWakeupExpandedEvent>(_toggleWakeup);
    on<AddPortionEvent>(_addPortion); //пользователь нажимает "Добавить продукт"
    on<RemovePortionEvent>(_removePortion);
    on<RemoveImageEvent>(
      _removeImage,
    ); // пользователь нажимает на крестик около продукта
    on<UploadImages>(_uploadImages); //пользователь нажимает "Добавить фото"
    on<ProductInput>(
      _inputProduct,
    );
    on<FinishDay>(_finishDay);
    on<SendModeration>(_sendModeration);
    on<ClearInput>(_clearInput);
    on<ConfirmPortion>(_confirmPortion);
  }

  loadDiary(
    LoadDiary event,
    Emitter<DiaryState> emit,
  ) async {
    emit(const DiaryState.loading());
    try {
      Map<String, int> data = await diaryRepository.getDiaryID();

      final int? diaryID = data['id'];
      final DiaryModel diary = await diaryRepository.getDiary(diaryID ?? 45);
      final Meal currentMeal = diary.meals[0];

      List<SelectionPopupModel> portionList = [SelectionPopupModel(title: "грамм", value: "gr"), SelectionPopupModel(title: "порций", value: "pcs")];

      final Map<String, dynamic> chartData = await diaryRepository.getChartData(diaryID ?? 45);
      final Map<String, dynamic> dailyNutritionIntake = chartData['dailyNutritionIntake']!;
      final Map<String, dynamic> dailyNutritionRecommendations = chartData['dailyNutritionRecommendation']!;
      final double ccal = dailyNutritionIntake['energy']! / dailyNutritionRecommendations['energy']! * 50;
      final double proteins = dailyNutritionIntake['proteins']! / dailyNutritionRecommendations['proteins']! * 50;
      final double fats = dailyNutritionIntake['fats']! / dailyNutritionRecommendations['fats']! * 50;
      final double carbs = dailyNutritionIntake['carbohydrates']! / dailyNutritionRecommendations['carbohydrates']! * 50;

      Color getColor(double value) {
        if (value >= 99.1) {
          return Colors.red;
        } else {
          return Colors.blue;
        }
      }

      final List<NutritionData> chartDataCounted = [
        NutritionData('Калории', ccal, getColor(ccal)),
        NutritionData('Белки', proteins, getColor(proteins)),
        NutritionData('Жиры', fats, getColor(fats)),
        NutritionData('Углеводы', carbs, getColor(carbs)),
      ];

      List<SelectionPopupModel> mealList = [
        SelectionPopupModel(title: "Прием пищи 1", id: 1),
        SelectionPopupModel(title: "Прием пищи 2", id: 2),
        SelectionPopupModel(title: "Прием пищи 3", id: 3),
        SelectionPopupModel(title: "Прием пищи 4", id: 4),
        SelectionPopupModel(title: "Прием пищи 5", id: 5),
        SelectionPopupModel(title: "Прием пищи 6", id: 6),
      ];

      emit(DiaryState.loaded(
          diary: diary,
          currentMeal: currentMeal,
          portions: currentMeal.portions,
          portionList: portionList,
          portionController: portionList[0],
          mealList: mealList,
          chartData: chartData,
          chartDataCounted: chartDataCounted,
          selectedMood: currentMeal.mood,
          selectedSatiety: currentMeal.satiety,
          wakeupController: TimeOfDay.now(),
          retireController: TimeOfDay.now(),
          commentController: TextEditingController(),
          product_nameController: TextEditingController(),
          productQuantityController: TextEditingController(),
          caloriesController: TextEditingController(),
          fatsController: TextEditingController(),
          proteinsController: TextEditingController(),
          carbsController: TextEditingController(),
          wakeupExpanded: false,
          moderationExpanded: false,
          moodExpanded: false,
          isLoading: false,
          isAdded: false,
          autocompleteList: [],
          recommendedChartValues: [1, 1, 1, 1],
          consumedChartValues: [1, 1, 1, 1]));
    } catch (e) {
      emit(DiaryState.error(errorMessage: e.toString()));
    }
  }

  loadDiaryById(
    LoadDiaryById event,
    Emitter<DiaryState> emit,
  ) async {
    emit(const DiaryState.loading());
    try {
      final int diaryID = int.parse(event.id ?? "0");
      final DiaryModel diary = await diaryRepository.getDiary(diaryID);
      final Meal currentMeal = diary.meals[0];

      List<SelectionPopupModel> portionList = [SelectionPopupModel(title: "gr"), SelectionPopupModel(title: "pcs")];

      final Map<String, dynamic> chartData = await diaryRepository.getChartData(diaryID);
      final Map<String, dynamic> dailyNutritionIntake = chartData['dailyNutritionIntake']!;
      final Map<String, dynamic> dailyNutritionRecommendations = chartData['dailyNutritionRecommendation']!;
      final double ccal = dailyNutritionIntake['energy']! / dailyNutritionRecommendations['energy']! * 50;
      final double proteins = dailyNutritionIntake['proteins']! / dailyNutritionRecommendations['proteins']! * 50;
      final double fats = dailyNutritionIntake['fats']! / dailyNutritionRecommendations['fats']! * 50;
      final double carbs = dailyNutritionIntake['carbohydrates']! / dailyNutritionRecommendations['carbohydrates']! * 50;

      Color getColor(double value) {
        if (value >= 99.1) {
          return Colors.red;
        } else {
          return Colors.blue;
        }
      }

      final List<NutritionData> chartDataCounted = [
        NutritionData('Калории', ccal, getColor(ccal)),
        NutritionData('Белки', proteins, getColor(proteins)),
        NutritionData('Жиры', fats, getColor(fats)),
        NutritionData('Углеводы', carbs, getColor(carbs)),
      ];

      List<SelectionPopupModel> mealList = [
        SelectionPopupModel(title: "Прием пищи 1", id: 1),
        SelectionPopupModel(title: "Прием пищи 2", id: 2),
        SelectionPopupModel(title: "Прием пищи 3", id: 3),
        SelectionPopupModel(title: "Прием пищи 4", id: 4),
        SelectionPopupModel(title: "Прием пищи 5", id: 5),
        SelectionPopupModel(title: "Прием пищи 6", id: 6),
      ];

      emit(DiaryState.loaded(
          diary: diary,
          currentMeal: currentMeal,
          portions: currentMeal.portions,
          portionList: portionList,
          portionController: portionList[0],
          mealList: mealList,
          chartData: chartData,
          chartDataCounted: chartDataCounted,
          selectedMood: currentMeal.mood,
          selectedSatiety: currentMeal.satiety,
          wakeupController: TimeOfDay.now(),
          retireController: TimeOfDay.now(),
          commentController: TextEditingController(),
          product_nameController: TextEditingController(),
          productQuantityController: TextEditingController(),
          caloriesController: TextEditingController(),
          fatsController: TextEditingController(),
          proteinsController: TextEditingController(),
          carbsController: TextEditingController(),
          wakeupExpanded: false,
          moderationExpanded: false,
          moodExpanded: false,
          isLoading: false,
          isAdded: false,
          autocompleteList: [],
          recommendedChartValues: [1, 1, 1, 1],
          consumedChartValues: [1, 1, 1, 1]));
    } catch (e) {
      emit(DiaryState.error(errorMessage: e.toString()));
    }
  }

  Future<void> _changeSatiety(
    ChangeSatiety event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      var updatedState = currentState.copyWith(
        selectedSatiety: event.selectedElement,
      );
      diaryRepository.changeSatiety(
        event.selectedElement,
        currentState.currentMeal.id,
        currentState.diary.id,
      );
      emit(updatedState);
    }
  }

  Future<void> _changeMood(
    ChangeMood event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      var updatedState = currentState.copyWith(
        selectedMood: event.selectedElement,
      );

      diaryRepository.changeMood(
        event.selectedElement,
        currentState.currentMeal.id,
        currentState.diary.id,
      );

      emit(updatedState); // Передаем обновленное состояние в emit
    }
  }

  FutureOr<void> _changeWakeup(
    WakeupEvent event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      var updatedState = currentState.copyWith(wakeupController: event.selectedTime);
      final DateFormat formatter = DateFormat('HH:mm');
      final String wakeupString = formatter.format(DateTime(2022, 1, 1, event.selectedTime.hour, event.selectedTime.minute));
      await diaryRepository.changeWakeup(
        currentState.diary.id,
        wakeupString,
      );
      emit(updatedState);
    }
  }

  FutureOr<void> _changeRetire(
    RetireEvent event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      var updatedState = currentState.copyWith(retireController: event.selectedTime);
      final DateFormat formatter = DateFormat('HH:mm');
      final String retireString = formatter.format(DateTime(2022, 1, 1, event.selectedTime.hour, event.selectedTime.minute));
      await diaryRepository.changeRetire(
        currentState.diary.id,
        retireString,
      );
      emit(updatedState);
    }
  }

  FutureOr<void> _changeMealTime(
    ChangeMealTime event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      var updatedState = currentState.copyWith(mealTimeController: event.time);
      emit(updatedState);
    }
  }

  FutureOr<void> _changeMeal(
    ChangeMeal event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      final currentState = state as DiaryStateLoaded;
      final Meal meal = currentState.diary.meals.firstWhere((meal) => meal.type == event.value.id);
      DiaryStateLoaded updatedState = currentState.copyWith(
        currentMeal: meal,
        portions: meal.portions,
        mealTimeController: toTime(meal.time),
        selectedMood: meal.mood,
        selectedSatiety: meal.satiety,
      );
      emit(updatedState);
    }
  }

  Future<void> _inputProduct(
    ProductInput event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;

      final Map<String, List<Product>> productNutritionalValues = await diaryRepository.inputProduct(event.input);
      var updatedState = currentState.copyWith(
        product_nameController: TextEditingController(text: event.input),
        autocompleteList: productNutritionalValues['product_nutritional_value'] ?? [],
      );
      if (event.input.length > 3) {
        updatedState = updatedState.copyWith(moderationExpanded: true);
      } else {
        updatedState = updatedState.copyWith(moderationExpanded: false);
      }

      emit(updatedState);
    }
  }

  FutureOr<void> _addPortion(
    AddPortionEvent event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      await diaryRepository.addPortion(
        currentState.diary.id,
        currentState.currentMeal.id,
        currentState.product_nameController.text,
        currentState.portionController.value,
        int.parse(currentState.productQuantityController.text),
      );
      add(LoadDiary());
    }
  }

  Future<void> _removePortion(
    RemovePortionEvent event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      await diaryRepository.removePortion(
        currentState.diary.id,
        currentState.currentMeal.id,
        event.portionId,
      );
    }
    add(LoadDiary());
  }

  Future<void> _uploadImages(
    UploadImages event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;

      emit(currentState.copyWith(isLoading: true));
      await diaryRepository.uploadImage(
        event.image.path,
        currentState.diary.id,
        currentState.currentMeal.id,
      );
      add(LoadDiary());
    }
  }

  FutureOr<void> _sendModeration(
    SendModeration event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      await diaryRepository.sendModeration(
        event.name,
        event.energyOn100gr,
        event.proteinsOn100gr,
        event.fatsOn100gr,
        event.carbohydratesOn100gr,
      );
    }
  }

  FutureOr<void> _clearInput(
    ClearInput event,
    Emitter<DiaryState> emit,
  ) {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      DiaryStateLoaded updatedState = currentState.copyWith();
      emit(updatedState);
    }
  }

  FutureOr<void> _changePortion(
    ChangePortion event,
    Emitter<DiaryState> emit,
  ) {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;
      DiaryStateLoaded updatedState = currentState.copyWith(
        portionController: event.value,
      );
      emit(updatedState);
    }
  }

  FutureOr<void> _toggleMood(
    ToggleMoodExpandedEvent event,
    Emitter<DiaryState> emit,
  ) {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;

      emit(currentState.copyWith(moodExpanded: !currentState.moodExpanded));
    }
  }

  FutureOr<void> _toggleWakeup(
    ToggleWakeupExpandedEvent event,
    Emitter<DiaryState> emit,
  ) {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;

      emit(currentState.copyWith(wakeupExpanded: !currentState.wakeupExpanded));
    }
  }

  FutureOr<void> _removeImage(
    RemoveImageEvent event,
    Emitter<DiaryState> emit,
  ) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;

      await diaryRepository.removeImage(
        currentState.diary.id,
        currentState.currentMeal.id,
        int.parse(event.photoID),
        event.path,
      );
      add(LoadDiary());
    }
  }

  Future<void> _finishDay(FinishDay event, Emitter<DiaryState> emit) async {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;

      await diaryRepository.finishDay(
        currentState.diary.id,
        //  currentState.wakeupController,
        // currentState.retireController,
        //  currentState.commentController.text,
      );
      add(LoadDiary());
    }
  }

  TimeOfDay toTime(String timeStr) {
    List<String> timeParts = timeStr.split(":");
    int hour = int.parse(timeParts[0]);
    int minute = int.parse(timeParts[1]);

    TimeOfDay timeOfDay = TimeOfDay(hour: hour, minute: minute);
    return timeOfDay;
  }

  int compareTypes(a, b) {
    return a['type'].compareTo(b['type']);
  }

  List<SelectionPopupModel> fillPortion() {
    return [
      SelectionPopupModel(id: 0, title: "порций", isSelected: true),
      SelectionPopupModel(id: 1, title: "грамм"),
    ];
  }

  FutureOr<void> _confirmPortion(ConfirmPortion event, Emitter<DiaryState> emit) {
    if (state is DiaryStateLoaded) {
      var currentState = state as DiaryStateLoaded;

      final updatedPortions = currentState.portions.map((portion) {
        if (portion.id == event.id) {
          return portion.copyWith(from_diet: !portion.from_diet);
        }
        if (!portion.from_diet) add(RemovePortionEvent(portion.id));
        return portion;
      }).toList();

      final updatedState = currentState.copyWith(portions: updatedPortions);

      emit(updatedState);

      add(LoadDiary());
    }
  }
}

int convertToInt(dynamic value) {
  if (value is int) {
    return value;
  } else if (value is double) {
    return value.toInt();
  } else {
    throw FormatException('Unexpected value type: ${value.runtimeType}');
  }
}