import 'package:flutter/material.dart';
import 'package:qhd_prevention/pages/home/work_alert.dart';
import 'package:qhd_prevention/pages/my_appbar.dart';
import 'package:qhd_prevention/tools/tools.dart';
import 'package:table_calendar/table_calendar.dart';
import 'package:intl/intl.dart';

import '../../tools/h_colors.dart';

class WorkSetPage extends StatefulWidget {
  const WorkSetPage({super.key});

  @override
  State<WorkSetPage> createState() => _WorkSetPageState();
}

class _WorkSetPageState extends State<WorkSetPage> {
  DateTime _focusedDay = DateTime.now();
  DateTime _selectedDay = DateTime.now();

  void _goToToday() {
    setState(() {
      _focusedDay = DateTime.now();
      _selectedDay = DateTime.now();
      selectDate();
    });
  }

  void _goToPrevMonth() {
    setState(() {
      _focusedDay = DateTime(_focusedDay.year, _focusedDay.month - 1);
    });
  }

  void _goToNextMonth() {
    setState(() {
      _focusedDay = DateTime(_focusedDay.year, _focusedDay.month + 1);
    });
  }

  void selectDate() {
    print("======$_selectedDay");
    showWorkAlert(
      context: context,
      alertTitle: "标题：",
      inputHint: "请输入",
      contentHint: "请输入",
      onConfirm: (title, content) {
        // 处理确定后的逻辑
        print("标题: $title");
        print("内容: $content");
      },
      onCancel: () {
        // 处理取消逻辑
        print("用户取消了操作");
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: h_backGroundColor(),
      appBar: MyAppbar(title: "工作安排"),
      body: Column(
        children: [
          Padding(
            padding: const EdgeInsets.symmetric(vertical: 1),
            child: _calendarHeader(),
          ),
          Container(
            padding: EdgeInsets.only(top: 10),
            color: Colors.white,
            child: TableCalendar(
              locale: 'zh_CN', // 👈 设置为中文
              firstDay: DateTime(2000),
              lastDay: DateTime(2100),
              focusedDay: _focusedDay,
              selectedDayPredicate: (day) => isSameDay(_selectedDay, day),
              onDaySelected: (selectedDay, focusedDay) {
                setState(() {
                  _selectedDay = selectedDay;
                  _focusedDay = focusedDay;
                  selectDate();
                });
              },
              daysOfWeekStyle: DaysOfWeekStyle(
                dowTextFormatter: (date, locale) {
                  // date.weekday: 1=Mon ... 7=Sun
                  const weekdays = ['日', '一', '二', '三', '四', '五', '六'];
                  return weekdays[date.weekday % 7]; // 0=Sun
                },
                weekdayStyle: const TextStyle(
                  fontWeight: FontWeight.bold,
                  color: Colors.black87,
                ),
                weekendStyle: const TextStyle(
                  fontWeight: FontWeight.bold,
                  color: Colors.black45,
                ),
              ),
              calendarFormat: CalendarFormat.month,
              startingDayOfWeek: StartingDayOfWeek.sunday,
              headerVisible: false,
              enabledDayPredicate: (day) {
                //  禁用非当前月份日期
                return day.month == _focusedDay.month;
              },
              calendarStyle: const CalendarStyle(
                outsideTextStyle: TextStyle(color: Colors.grey),
                outsideDecoration: BoxDecoration(
                  color: Colors.transparent,
                  shape: BoxShape.rectangle,
                ),
                todayDecoration: BoxDecoration(
                  color: Colors.transparent, // 不再使用默认 today 样式
                ),
                selectedDecoration: BoxDecoration(
                  color: Colors.blue,
                  shape: BoxShape.circle,
                ),
              ),
              calendarBuilders: CalendarBuilders(
                defaultBuilder: (context, day, focusedDay) {
                  return _buildDayCell(day);
                },
                outsideBuilder: (context, day, focusedDay) {
                  return _buildDayCell(day, isOutside: true);
                },
                todayBuilder: (context, day, focusedDay) {
                  return _buildDayCell(day);
                },
                selectedBuilder: (context, day, focusedDay) {
                  return _buildDayCell(day, isSelected: true);
                },
              ),
            ),
          ),
          Container(color: h_backGroundColor(), height: 20),
          _workTipWidget(),
        ],
      ),
    );
  }

  /// 本日工作题型
  Widget _workTipWidget() {
    return Container(
      color: Colors.white,
      padding: EdgeInsets.all(12),
      child: Column(
        spacing: 20,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Text("本日工作题型", style: TextStyle(fontSize: 16)),
              Spacer(),
            ],
          ),
          Column(
            spacing: 5,
            children: [
              _itemCell("需进行2项隐患排查", true),
              _itemCell("需进行2项隐患排查", false),
            ],

          ),
        ],

      ),
    );
  }
  Widget _itemCell(final String title, bool isFinish) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.spaceBetween,
      children: [
        Row(
          spacing: 5,
          children: [
            Icon(Icons.circle, size: 10, color: Colors.blue),
            Text(title, style: TextStyle(color: Colors.black45),),
          ],
        ),
        Text(isFinish?"已完成":"未完成", style: TextStyle(color: isFinish?Colors.green:Colors.red)),
      ],
    );
  }
  ///日历头
  Widget _calendarHeader() {
    return Container(
      color: Colors.white,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          // 占位
          const Spacer(),
          const Spacer(),
          // 中间内容：← 年月 →
          Row(
            mainAxisSize: MainAxisSize.min,
            children: [
              IconButton(
                icon: const Icon(Icons.chevron_left),
                onPressed: _goToPrevMonth,
                padding: EdgeInsets.zero,
                constraints: const BoxConstraints(),
              ),
              const SizedBox(width: 4),
              Text(
                DateFormat('yyyy年MM月').format(_focusedDay),
                style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
              ),
              const SizedBox(width: 4),
              IconButton(
                icon: const Icon(Icons.chevron_right),
                onPressed: _goToNextMonth,
                padding: EdgeInsets.zero,
                constraints: const BoxConstraints(),
              ),
            ],
          ),
          const Spacer(),
          Container(
            height: 24,
            decoration: BoxDecoration(
              color: h_backGroundColor(),
              borderRadius: const BorderRadius.only(
                topLeft: Radius.circular(12),
                bottomLeft: Radius.circular(12),
              ),
            ),
            child: TextButton(
              onPressed: _goToToday,
              style: TextButton.styleFrom(
                padding: const EdgeInsets.symmetric(horizontal: 7),
                minimumSize: Size.zero,
                tapTargetSize: MaterialTapTargetSize.shrinkWrap,
              ),
              child: const Text("回到今天", style: TextStyle(fontSize: 11)),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildDayCell(
    DateTime day, {
    bool isSelected = false,
    bool isOutside = false,
  }) {
    final bool isToday = isSameDay(day, DateTime.now());
    final bool selected = isSameDay(day, _selectedDay);

    Color textColor;
    if (selected) {
      textColor = Colors.white;
    } else if (isOutside) {
      textColor = Colors.grey;
    } else {
      textColor = Colors.black87;
    }

    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Container(
          width: 35,
          height: 35,
          alignment: Alignment.center,
          decoration: BoxDecoration(
            color: selected ? Colors.blue : Colors.transparent,
            shape: BoxShape.circle,
          ),
          child: Text(
            '${day.day}',
            style: TextStyle(color: textColor, fontWeight: FontWeight.w500),
          ),
        ),
        if (isToday)
          Text(
            "今天",
            style: TextStyle(
              fontSize: 12,
              color: selected ? Colors.white : Colors.blue,
            ),
          ),
      ],
    );
  }
}