import 'package:flutter/material.dart';
import 'package:flutter_common/flutter_common.dart';
import 'package:get/get.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      title: 'flutter_common Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        scaffoldBackgroundColor: const Color(0xFFF5F7FB),
        colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFF4D6FD5)),
        cardTheme: const CardThemeData(
          color: Colors.white,
          margin: EdgeInsets.zero,
          elevation: 0,
        ),
      ),
      home: const MyHomePage(),
    );
  }
}

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

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String _singleDateText = '未选择';
  String _rangeDateText = '未选择';

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('flutter_common 示例首页'),
        centerTitle: true,
      ),
      body: SafeArea(
        child: ListView(
          padding: const EdgeInsets.all(16),
          children: [
            _buildIntroCard(),
            const SizedBox(height: 16),
            _buildDemoCard(
              title: '单日选择组件',
              description: '使用 `CalendarChooseWidget` 的单选模式，适合筛选某一天的数据。',
              child: CalendarChooseWidget(
                chooseIndex: 1,
                selectedDate: DateTime.now(),
                dateTimeUtilsType: DateTimeUtilsType.yearMonthDayWord,
                fontSize: 18,
                fontWeight: FontWeight.w600,
                tapAction: (value) {
                  final startTime = value['startTime'] as DateTime?;
                  setState(() {
                    _singleDateText = _formatDateWithWeekday(startTime);
                  });
                },
              ),
              resultText: _singleDateText,
            ),
            const SizedBox(height: 16),
            _buildDemoCard(
              title: '区间选择组件',
              description: '默认展示开始和结束日期，适合做报表、订单或运营时间筛选。',
              child: CalendarChooseWidget(
                selectedDate: DateTime.now(),
                dateTimeUtilsType: DateTimeUtilsType.yearMonthDay,
                fontSize: 18,
                fontWeight: FontWeight.w600,
                tapAction: (value) {
                  final startTime = value['startTime'] as DateTime?;
                  final endTime = value['endTime'] as DateTime?;
                  setState(() {
                    _rangeDateText =
                        '${_formatDate(startTime)} 至 ${_formatDate(endTime)}';
                  });
                },
              ),
              resultText: _rangeDateText,
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildIntroCard() {
    return Card(
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
      child: Padding(
        padding: const EdgeInsets.all(20),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: const [
            Text(
              '项目结构速览',
              style: TextStyle(
                fontSize: 20,
                fontWeight: FontWeight.w700,
                color: Color(0xFF1A1A1A),
              ),
            ),
            SizedBox(height: 12),
            Text(
              'lib/calendarcalendar 里提供了日期选择相关组件，'
              'lib/upload_image 聚合图片上传与预览能力，'
              'lib/utils 则放了日期、弹窗等通用工具。',
              style: TextStyle(
                fontSize: 15,
                height: 1.6,
                color: Color(0xFF4F5B67),
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildDemoCard({
    required String title,
    required String description,
    required Widget child,
    required String resultText,
  }) {
    return Card(
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
      child: Padding(
        padding: const EdgeInsets.all(20),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              title,
              style: const TextStyle(
                fontSize: 18,
                fontWeight: FontWeight.w700,
                color: Color(0xFF1A1A1A),
              ),
            ),
            const SizedBox(height: 8),
            Text(
              description,
              style: const TextStyle(
                fontSize: 14,
                height: 1.6,
                color: Color(0xFF5C6670),
              ),
            ),
            const SizedBox(height: 16),
            Container(
              width: double.infinity,
              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 18),
              decoration: BoxDecoration(
                color: const Color(0xFFF7F9FC),
                borderRadius: BorderRadius.circular(16),
                border: Border.all(color: const Color(0xFFD9E1F2)),
              ),
              child: child,
            ),
            const SizedBox(height: 14),
            Text(
              '当前结果：$resultText',
              style: const TextStyle(
                fontSize: 14,
                fontWeight: FontWeight.w500,
                color: Color(0xFF4D6FD5),
              ),
            ),
          ],
        ),
      ),
    );
  }

  String _formatDate(DateTime? date) {
    if (date == null) {
      return '未选择';
    }
    return DateTimeUtils.dateTimeUtilsTool(
      dateTime: date.toIso8601String(),
      dateTimeUtilsType: DateTimeUtilsType.yearMonthDay,
    );
  }

  String _formatDateWithWeekday(DateTime? date) {
    if (date == null) {
      return '未选择';
    }
    return '${DateTimeUtils.dateTimeUtilsTool(
      dateTime: date.toIso8601String(),
      dateTimeUtilsType: DateTimeUtilsType.yearMonthDayWord,
    )} ${DateTimeUtils.getWeekDay(date)}';
  }
}