import 'package:tw_calendar/tw_calendar.dart';

import 'package:flutter/material.dart';

enum TWCalendarListSeletedMode {
  /// 默认: 单选连续,从可选日开始
  singleSerial,

  /// 默认选择是连续多选
  doubleSerial,
}

class TWCalendarConfigs {
  /// 日历列表配置对象
  final TWCalendarListConfig? listConfig;

  /// 月历配置对象
  final TWCalendarMonthViewConfig? monthViewConfig;

  /// 月历配置对象
  final TWCalendarDayNumberConfig? dayNumberConfig;

  /// 周视图配置对象
  final TWCalendarWeekdayRowConfig? weekdayRowConfig;
}

/* 列表部分 */
class TWCalendarListConfig {
  /// 选择模式
  final TWCalendarListSeletedMode? seletedMode;

  /// 水平间隙，默认 8
  final double? horizontalSpace;

  /// 确认周视图高度， 默认 66
  final double? ensureViewHeight;

  /// 确认按钮的间隙
  final EdgeInsetsGeometry? ensureViewPadding;

  /// 确认按钮选中颜色
  final Color? ensureViewSelectedColor;

  /// 确认未按钮选中颜色
  final Color? ensureViewUnSelectedColor;

  /// 确认按钮字体大小
  final double? ensureTitleFontSize;

  /// 确认按钮字体颜色
  final Color? ensureTitleColor;

  /// 确定按钮 decoration
  final Decoration? ensureViewDecoration;
}

/* 月历视图部分 */
class TWCalendarMonthViewConfig {
  /// 月视图高度，为空则占满剩余空间
  final double? monthBodyHeight;

  /// 今天是否可以选择, 默认不支持
  final bool? canSelectedToday;

  /// 月份标题
  final List<String>? monthNames;

  /// 年月标题字体大小
  final double? titleFontSize;

  /// 间隙, 默认 8
  final double? padding;

  /// 月历 title 回调
  final String Function(int year, int month)? titleHandler;
}

class TWCalendarDayNumberConfig {
  /// 今天颜色
  final Color? todayBackgroudColor;

  /// 今天颜色
  final Color? todayTitleColor;

  /// 选择背景颜色
  final Color? selectedBackgroundColor;

  /// 选择颜色
  final Color? selectedTitleColor;

  /// 选择颜色
  final Color? unSelectedTitleColor;

  /// 禁止选择颜色
  final Color? forbidSelectedTitleColor;

  /// 间隙
  final double? itemMargin;

  /// 字体大小
  final double? fontSize;

  /// 今天字体大小
  final double? todayFontSize;

  /// 今天标识
  final String? todyTitle;

}

class TWCalendarWeekdayRowConfig {
  /// 周视图高度， 默认 48
  final double? weekDayHeight;

  /// 标题颜色
  final Color? titleColor;

  /// 标题字体大小
  final double? titleFontSize;

  /// 周视图 titles
  final List<String>? titles;
}

class TWCalendarView extends StatefulWidget {
  const TWCalendarView({
    Key? key,
  }) : super(key: key);

  @override
  TWCalendarViewState createState() => TWCalendarViewState();
}

class TWCalendarViewState extends State<TWCalendarView> {
  late TWCalendarController controller;

  @override
  void initState() {
    super.initState();
    controller = TWCalendarController(
      firstDate: TWCalendarTool.today,
      lastDate: TWCalendarTool.nowAfterDays(33),
      selectedStartDate: TWCalendarTool.nowAfterDays(2),
      selectedEndDate: TWCalendarTool.nowAfterDays(10),
      onSelectDayRang: ((seletedDate, seletedDays) {
        print('seletedDate : $seletedDate, seletedDays : $seletedDays');
      }),
      onSelectDayTitle: (selectStartTime, selectEndTime, seletedDays) {
        print(
            'selectStartTime : $selectStartTime, selectEndTime : $selectEndTime, seletedDays : $seletedDays');
        if (selectStartTime != null && selectEndTime != null) {
          return "ensure (${selectStartTime.year},${selectStartTime.month},${selectStartTime.day} - ${selectEndTime.year},${selectEndTime.month},${selectEndTime.day}）";
        }
        return "please choice...";
      },
      onSelectFinish: (selectStartTime, selectEndTime) {
        print(
            'selectStartTime : $selectStartTime, selectEndTime : $selectEndTime');
        Navigator.pop(context);
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return TWCalendarList(
      calendarController: controller,
      configs: TWCalendarConfigs(
        listConfig: TWCalendarListConfig(
          seletedMode: TWCalendarListSeletedMode.doubleSerial,
          ensureViewSelectedColor: Colors.blue,
        ),
        monthViewConfig: TWCalendarMonthViewConfig(
          monthBodyHeight: 300.w,
          canSelectedToday: true,
          titleHandler: ((year, month) => '$year - $month'),
        ),
        dayNumberConfig: TWCalendarDayNumberConfig(
          selectedBackgroundColor: Colors.blue,
          todayBackgroudColor: Colors.red,
          todyTitle: 'today',
        ),
        weekdayRowConfig: TWCalendarWeekdayRowConfig(
          titleFontSize: 14.w,
          titleColor: Colors.blue,
          titles: [
            'Sun',
            'Mon',
            'Tues',
            'Wed',
            'Thurs',
            'Fri',
            'Satur',
          ],
        ),
      ),
      headerView: Container(
        alignment: Alignment.center,
        height: 55.w,
        child: Text(
          'Calendar Widget',
          style: TextStyle(
            color: Colors.blue,
            fontSize: 18.w,
            fontWeight: FontWeight.bold,
          ),
        ),
      ),
    );
  }
}