import 'package:aitrainer_app/util/app_language.dart';
import 'package:aitrainer_app/util/common.dart';
import 'package:intl/intl.dart';
import 'package:aitrainer_app/model/cache.dart';
import 'package:aitrainer_app/model/customer_property.dart';
import 'package:aitrainer_app/model/exercise.dart';
import 'package:aitrainer_app/repository/customer_repository.dart';
import 'package:aitrainer_app/repository/exercise_repository.dart';
import 'package:aitrainer_app/util/diagram_data.dart';
import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';

part 'development_diagram_event.dart';
part 'development_diagram_state.dart';

enum DiagramDataSource { customerProperty, exercise }

extension DiagramDataSourceExt on DiagramDataSource {
  String toStr() => this.toString().split(".").last;
  bool equalsTo(DiagramDataSource filter) => this.toString() == filter.toString();
  bool equalsStringTo(String filter) => this.toString() == filter;
}

enum DiagramDateFilter { daily, monthly, weekly, yearly }

extension DiagramDateFilterExt on DiagramDateFilter {
  String toStr() => this.toString().split(".").last;
  bool equalsTo(DiagramDateFilter filter) => this.toString() == filter.toString();
  bool equalsStringTo(String filter) => this.toString() == filter;
}

enum DiagramGroup { none, sumMass, oneRepMax, percent }

extension DiagramGroupExt on DiagramDateFilter {
  String toStr() => this.toString().split(".").last;
  bool equalsTo(DiagramGroup filter) => this.toString() == filter.toString();
  bool equalsStringTo(String filter) => this.toString() == filter;
}

class DevelopmentDiagramBloc extends Bloc<DevelopmentDiagramEvent, DevelopmentDiagramState> with Common {
  DiagramDateFilter dateFilter = DiagramDateFilter.monthly;
  DiagramGroup group = DiagramGroup.sumMass;
  final List<DiagramData> diagramData = [];

  CustomerRepository? customerRepository;
  ExerciseRepository? exerciseRepository;
  String? propertyName;
  int? exerciseTypeId;
  final String diagramTitle;
  bool isGroup = true;

  DevelopmentDiagramBloc({required this.diagramTitle, this.customerRepository, this.exerciseRepository, this.propertyName, this.exerciseTypeId})
      : super(DevelopmentDiagramInitial()) {
    _init();
    on<DevelopmentDiagramLoad>(_onLoad);
    on<DevelopmentDiagramChangeDateFormat>(_onChangeDateFormat);
    on<DevelopmentDiagramChangeGroup>(_onChangeGroup);
  }

  void _onLoad(DevelopmentDiagramLoad event, Emitter<DevelopmentDiagramState> emit) {
    emit(DevelopmentDiagramLoading());
    if (Cache().userLoggedIn == null) {
      emit(DevelopmentDiagramError(message: "Please log in"));
      return;
    }

    emit(DevelopmentDiagramReady());
  }

  void _init() {
    if (customerRepository != null) {
      final List<CustomerProperty> properties = this.customerRepository!.getAllCustomerPropertyByName(this.propertyName!);
      this.fillDataCustomerProperty(properties, this.dateFilter);
      this.isGroup = false;
    } else {
      this.isGroup = true;
      this.getExerciseData();
    }
    this.dateFilter = DiagramDateFilter.monthly;
  }

  void _onChangeDateFormat(DevelopmentDiagramChangeDateFormat event, Emitter<DevelopmentDiagramState> emit) {
    emit(DevelopmentDiagramLoading());
    this.dateFilter = event.dateFilter;
    print("Filter: ${this.dateFilter} - property: ${this.propertyName}");
    if (customerRepository != null) {
      final List<CustomerProperty> properties = this.customerRepository!.getAllCustomerPropertyByName(this.propertyName!);
      this.fillDataCustomerProperty(properties, this.dateFilter);
    } else {
      this.getExerciseData();
    }

    emit(DevelopmentDiagramReady());
  }

  void _onChangeGroup(DevelopmentDiagramChangeGroup event, Emitter<DevelopmentDiagramState> emit) {
    emit(DevelopmentDiagramLoading());
    this.group = event.group;
    this.getExerciseData();
    emit(DevelopmentDiagramReady());
  }

  void getExerciseData() {
    this.diagramData.clear();
    this.getChartData();
  }

  List<DiagramData> getChartData() {
    List<Exercise>? exercises = exerciseRepository!.getExerciseList();
    List<Exercise> _exercises = [];
    if (this.exerciseTypeId != null) {
      exercises!.forEach((element) {
        if (element.exerciseTypeId == this.exerciseTypeId) {
          _exercises.add(element);
        }
      });
    }

    _exercises = sort(_exercises, true);

    GroupDate groupDate = GroupDate(inputList: _exercises, outputList: this.diagramData);
    groupDate.dateRate = this.dateFilter;
    groupDate.diagramType = this.group;
    groupDate.iteration();

    return this.diagramData;
  }

  List<Exercise> sort(List<Exercise> _exercises, bool asc) {
    _exercises.sort((a, b) {
      var aDateId = a.exerciseTypeId.toString() + "_" + a.datePart.toString();
      var bDateId = b.exerciseTypeId.toString() + "_" + b.datePart.toString();

      return asc ? aDateId.compareTo(bDateId) : bDateId.compareTo(aDateId);
    });
    return _exercises;
  }

  void fillDataCustomerProperty(List<CustomerProperty> customerProperties, DiagramDateFilter filter) {
    this.diagramData.clear();
    this.dateFilter = filter;
    customerProperties.sort((a, b) => a.dateAdd!.compareTo(b.dateAdd!) > 0 ? 1 : -1);

    double avg = 0;
    String? preFilter;
    if (this.dateFilter == DiagramDateFilter.daily) {
      preFilter = customerProperties[0].dateYmd;
    } else if (this.dateFilter == DiagramDateFilter.weekly) {
      preFilter = customerProperties[0].dateYmd;
    } else if (this.dateFilter == DiagramDateFilter.monthly) {
      preFilter = customerProperties[0].dateYm;
    } else if (this.dateFilter == DiagramDateFilter.yearly) {
      preFilter = customerProperties[0].dateY;
    }
    int counter = 0;
    customerProperties.forEach((element) {
      String? condition;
      if (this.dateFilter == DiagramDateFilter.daily) {
        condition = element.dateYmd;
      } else if (this.dateFilter == DiagramDateFilter.monthly) {
        condition = element.dateYm;
      } else if (this.dateFilter == DiagramDateFilter.weekly) {
        condition = element.dateYm;
      } else if (this.dateFilter == DiagramDateFilter.yearly) {
        condition = element.dateY;
      }

      if (preFilter != condition) {
        int count = counter == 0 ? 1 : counter;
        DiagramData data = DiagramData(preFilter!, avg / count);
        //print("Sum: $avg count: $count Data: $data");
        diagramData.add(data);
        counter = 1;
        preFilter = condition;
        avg = element.propertyValue;
      } else {
        avg += element.propertyValue;
        counter++;
      }
    });
    int count = counter == 0 ? 1 : counter;
    if (preFilter != null) {
      DiagramData data = DiagramData(preFilter!, avg / count);
      diagramData.add(data);
    }
    print("Diagramdata: --- ${this.diagramData}");
  }
}

class GroupDate extends GroupData with Common {
  final List<Exercise> inputList;
  final List<DiagramData> outputList;

  String? _origDatePart;
  late int _origExerciseTypeId;
  late Exercise _origExercise;

  late double _sumQuantity;
  late double _maxQuantity;
  late int _countExercises;
  double? _basePercent;

  late DiagramGroup diagramType;
  late DiagramDateFilter dateRate;

  GroupDate({required this.inputList, required this.outputList});

  double getQuantityByDate(Exercise exercise) {
    double sum = 0;
    if (this.diagramType == DiagramGroup.sumMass) {
      if (exercise.unitQuantity != null) {
        sum = exercise.quantity! * exercise.unitQuantity!;
      } else {
        sum = exercise.quantity!;
      }
    } else if (this.diagramType == DiagramGroup.oneRepMax) {
      if (exercise.unitQuantity != null) {
        sum = calculate1RM(exercise.unitQuantity!, exercise.quantity!);
      } else {
        sum = exercise.quantity!;
      }
    } else if (this.diagramType == DiagramGroup.percent) {
      if (exercise.unitQuantity != null) {
        sum = calculate1RM(exercise.unitQuantity!, exercise.quantity!);
        if (_basePercent == null) {
          _basePercent = sum;
        }
        sum = (sum / this._basePercent!) * 100;
      } else {
        sum = exercise.quantity!;
        if (_basePercent == null) {
          _basePercent = sum;
        }
        sum = (sum / this._basePercent!) * 100;
      }
    }
    return sum;
  }

  @override
  void addTempData(Exercise exercise) {
    double newQuantity = getQuantityByDate(exercise);
    _sumQuantity = _sumQuantity + newQuantity;
    if (_maxQuantity < newQuantity) {
      _maxQuantity = newQuantity;
    }
    _countExercises = _countExercises + 1;
    _origDatePart = getDatePart(exercise.dateAdd!, dateRate);
    _origExerciseTypeId = exercise.exerciseTypeId!;
    _origExercise = exercise;
  }

  @override
  bool checkNewType(Exercise exercise) {
    String exerciseDatePart = getDatePart(exercise.dateAdd!, dateRate);
    return _origDatePart == null || _origDatePart != exerciseDatePart || _origExerciseTypeId != exercise.exerciseTypeId;
  }

  String getDatePart(DateTime date, DiagramDateFilter dateRate) {
    String datePart = DateFormat('yy.MM.dd', AppLanguage().appLocal.toString()).format(date);
    if (dateRate == DiagramDateFilter.weekly) {
      datePart = weekNumber(date).toString();
    } else if (dateRate == DiagramDateFilter.monthly) {
      datePart = DateFormat('yy.MM', AppLanguage().appLocal.toString()).format(date);
    } else if (dateRate == DiagramDateFilter.yearly) {
      datePart = DateFormat('y', AppLanguage().appLocal.toString()).format(date);
    } else if (dateRate == DiagramDateFilter.daily) {
      datePart = DateFormat('yy.MM.dd', AppLanguage().appLocal.toString()).format(date);
    }
    return datePart;
  }

  @override
  void iteration() {
    this.resetTemp();
    Exercise? tempExercise;
    inputList.forEach((element) {
      tempExercise = element;
      if (this.checkNewType(element)) {
        if (_origDatePart == null) {
          this.addTempData(element);
        } else {
          this.temp2Output(_origExercise);
          this.resetTemp();
          this.addTempData(element);
        }
      } else {
        this.addTempData(element);
      }
    });
    if (tempExercise != null) {
      this.temp2Output(tempExercise!);
    }
  }

  @override
  void temp2Output(Exercise exercise) {
    if (exercise.unitQuantity == null) {
      return;
    }
    Exercise newExercise = exercise.copy();
    newExercise.datePart = _origDatePart;
    if (this.diagramType == DiagramGroup.oneRepMax || this.diagramType == DiagramGroup.percent) {
      newExercise.calculated = _maxQuantity;
    } else {
      newExercise.calculated = _sumQuantity / _countExercises;
    }
    DiagramData data = DiagramData(newExercise.datePart!, newExercise.calculated);
    print("chart add $data");
    outputList.add(data);
  }

  @override
  void resetTemp() {
    _countExercises = 0;
    _sumQuantity = 0;
    _maxQuantity = 0;
  }
}