import 'dart:collection';

import 'package:flutter/material.dart';
import 'package:flutter/foundation.dart';

import 'constants/constants.dart';
import 'flutter_custom_calendar.dart';

import 'model/date_model.dart';

/**
 * 配置信息类
 */
class CalendarConfiguration {
  //默认是单选,可以配置为MODE_SINGLE_SELECT，MODE_MULTI_SELECT
  CalendarSelectedMode? selectMode;

  //仅展示月视图，仅展示周视图，支持月视图和周视图切换
  int? showMode;

  //日历显示的最小年份和最大年份
  int? minYear;
  int? maxYear;

  //日历显示的最小年份的月份，最大年份的月份
  int? minYearMonth;
  int? maxYearMonth;

  //日历显示的当前的年份和月份
  int? nowYear;
  int? nowMonth;

  //可操作的范围设置,比如点击选择
  int? minSelectYear;
  int? minSelectMonth;
  int? minSelectDay;

  int? maxSelectYear;
  int? maxSelectMonth;
  int? maxSelectDay; //注意：不能超过对应月份的总天数

  DateModel? selectDateModel; //默认被选中的item，用于单选
  HashSet<DateModel?>? defaultSelectedDateList; //默认被选中的日期set，用于多选
  int? maxMultiSelectCount; //多选，最多选多少个
  Map<DateModel, Object>? extraDataMap = new Map(); //自定义额外的数据

  /**
   * UI绘制方面的绘制
   */
  double? itemSize; //默认是屏幕宽度/7
  double? verticalSpacing; //日历item之间的竖直方向间距，默认10
  BoxDecoration? boxDecoration; //整体的背景设置
  EdgeInsetsGeometry? padding;
  EdgeInsetsGeometry? margin;

  //支持自定义绘制
  DayWidgetBuilder? dayWidgetBuilder; //创建日历item
  WeekBarItemWidgetBuilder? weekBarItemWidgetBuilder; //创建顶部的weekbar

  /**
   * 监听变化
   */
  //各种事件回调
  OnMonthChange? monthChange; //月份切换事件 （已弃用,交给multiMonthChanges来实现）
  OnCalendarSelect? calendarSelect; //点击选择事件
  OnCalendarSelect? unCalendarSelect; //点击选择事件
  late OnMultiSelectOutOfRange multiSelectOutOfRange; //多选超出指定范围
  OnMultiSelectOutOfSize? multiSelectOutOfSize; //多选超出限制个数

  ObserverList<OnMonthChange>? monthChangeListeners =
      ObserverList<OnMonthChange>(); //保存多个月份监听的事件
  ObserverList<OnWeekChange>? weekChangeListeners =
      ObserverList<OnWeekChange>(); //周视图切换

  /**
   * 下面的信息不是配置的，是根据配置信息进行计算出来的
   */
  List<DateModel>? monthList =  []; //月份list
  List<DateModel>? weekList =  [] ; //星期list
  PageController? monthController; //月份的controller
  PageController? weekController; //星期的controller
  DateModel? minSelectDate;
  DateModel? maxSelectDate;

  /// 首日偏移量 first day offset
  /// first day = (first day of month or week) + offset
  final int offset;

  CalendarConfiguration(
      {this.selectMode,
      this.minYear,
      this.maxYear,
      this.minYearMonth,
      this.maxYearMonth,
      this.nowYear,
      this.nowMonth,
      this.minSelectYear,
      this.minSelectMonth,
      this.minSelectDay,
      this.maxSelectYear,
      this.maxSelectMonth,
      this.maxSelectDay,
      this.defaultSelectedDateList,
      this.selectDateModel,
      this.maxMultiSelectCount,
      this.extraDataMap,
      this.monthList,
      this.weekList,
      this.monthController,
      this.weekController,
      this.verticalSpacing,
      this.itemSize,
      this.showMode,
      this.padding,
      this.margin,
      this.offset = 0});

  @override
  String toString() {
    return 'CalendarConfiguration{selectMode: $selectMode, minYear: $minYear, maxYear: $maxYear, minYearMonth: $minYearMonth, maxYearMonth: $maxYearMonth, nowYear: $nowYear, nowMonth: $nowMonth, minSelectYear: $minSelectYear, minSelectMonth: $minSelectMonth, minSelectDay: $minSelectDay, maxSelectYear: $maxSelectYear, maxSelectMonth: $maxSelectMonth, maxSelectDay: $maxSelectDay, defaultSelectedDateList: $defaultSelectedDateList, maxMultiSelectCount: $maxMultiSelectCount, extraDataMap: $extraDataMap, monthList: $monthList, weekList: $weekList, monthController: $monthController, weekController: $weekController}';
  }
}