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

import 'controller.dart';

class SitePage extends GetView<SiteController> {
  const SitePage({super.key});

  @override
  Widget build(BuildContext context) {
    // 使用 GetBuilder 包裹，并从 controller 初始化
    return GetBuilder<SiteController>(
      init: controller,
      id: controller.builderId,
      builder: (_) {
        return  SingleChildScrollView(
          child: _buildView(),
        );
      },
    );
  }

  // 主视图
  Widget _buildView() {
    return Padding(
      padding: const EdgeInsets.all(12.0),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          // 第一个卡片: 今日预约统计
          Card(
            elevation: 3,
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8.0)),
            margin: const EdgeInsets.only(bottom: 12),
            child: Padding(
              padding: const EdgeInsets.symmetric(vertical: 12.0),
              child: Column(
                children: [
                  Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 16.0),
                    child: Row(
                      children: [
                        const Icon(Icons.calendar_today, color: Colors.blue, size: 32),
                        const SizedBox(width: 12),
                        const Expanded(
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Text(
                                '今日预约统计',
                                style: TextStyle(
                                  fontSize: 16,
                                  fontWeight: FontWeight.bold,
                                ),
                              ),
                              Text(
                                "Today's Reservation Statistics",
                                style: TextStyle(fontSize: 12, color: Colors.grey),
                              ),
                            ],
                          ),
                        ),
                        Container(
                          padding: const EdgeInsets.symmetric(
                            horizontal: 10,
                            vertical: 4,
                          ),
                          decoration: BoxDecoration(
                            color: Colors.blue.withOpacity(0.1),
                            borderRadius: BorderRadius.circular(12),
                          ),
                          child: const Text(
                            '实时',
                            style: TextStyle(
                              color: Colors.blue,
                              fontSize: 12,
                              fontWeight: FontWeight.bold,
                            ),
                          ),
                        ),
                      ],
                    ),
                  ),
                  const SizedBox(height: 10),
                  const Divider(height: 1, indent: 16, endIndent: 16),
                  const SizedBox(height: 12),
                  Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 16.0),
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.spaceAround,
                      children: [
                        _buildStatItem('300kg', '剩余余量'),
                        _buildStatItem('12辆', '预约车辆'),
                        _buildStatItem('8辆', '已完成'),
                      ],
                    ),
                  ),
                ],
              ),
            ),
          ),

          // 第二个卡片: 预约信息
          Card(
            elevation: 3,
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8.0)),
            margin: const EdgeInsets.only(bottom: 12),
            clipBehavior: Clip.antiAlias,
            child: Column(
              children: [
                Container(
                  color: Colors.blue,
                  padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 12.0),
                  child: Row(
                    children: [
                      const Expanded(
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Text(
                              '预约信息',
                              style: TextStyle(
                                fontSize: 16,
                                fontWeight: FontWeight.bold,
                                color: Colors.white,
                              ),
                            ),
                            SizedBox(height: 2),
                            Text(
                              'Reservation Information',
                              style: TextStyle(fontSize: 12, color: Colors.white70),
                            ),
                          ],
                        ),
                      ),
                      ElevatedButton.icon(
                        onPressed: () {
                          controller.fetchReservationData();
                        },
                        icon: const Icon(Icons.refresh, size: 16),
                        label: const Text('刷新'),
                        style: ElevatedButton.styleFrom(
                          foregroundColor: Colors.blue,
                          backgroundColor: Colors.white,
                          padding: const EdgeInsets.symmetric(horizontal: 12),
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(16),
                          ),
                        ),
                      ),
                    ],
                  ),
                ),
                controller.hasReservationData
                    ? _buildReservationListView()
                    : _buildEmptyReservationView(),
              ],
            ),
          ),

          // ==================== 新增的第三个卡片: 提示信息 ====================
          Card(
            elevation: 3,
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8.0)),
            margin: const EdgeInsets.only(bottom: 12),
            child: Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 12.0),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  _buildInfoItem(
                    Icons.info_outline,
                    '数据每5分钟自动刷新一次',
                  ),
                  const SizedBox(height: 8),
                  _buildInfoItem(
                    Icons.help_outline,
                    '点击车牌号可查看详细信息',
                  ),
                  const SizedBox(height: 8),
                  _buildInfoItem(
                    Icons.headset_mic_outlined,
                    '如有疑问请联系客服: 400-123-4567',
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }

  /// 构建单个统计项
  Widget _buildStatItem(String value, String label, {Color valueColor = Colors.blue}) {
    return Expanded(
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Text(
            value,
            style: TextStyle(
              fontSize: 18,
              fontWeight: FontWeight.bold,
              color: valueColor,
            ),
          ),
          const SizedBox(height: 4),
          Text(label, style: const TextStyle(fontSize: 14, color: Colors.grey)),
        ],
      ),
    );
  }

  /// 构建“暂无预约数据”的视图
  Widget _buildEmptyReservationView() {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.symmetric(vertical: 48.0),
      color: Colors.white,
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Icon(Icons.inventory_2_outlined, size: 80, color: Colors.grey[300]),
          const SizedBox(height: 16),
          const Text('暂无预约数据', style: TextStyle(fontSize: 16, color: Colors.black54)),
          const SizedBox(height: 8),
          const Text(
            '点击右上角刷新按钮获取最新数据',
            style: TextStyle(fontSize: 14, color: Colors.grey),
          ),
        ],
      ),
    );
  }

  /// 【预留】构建“有预约数据”的列表视图
  Widget _buildReservationListView() {
    return Container(
      color: Colors.white,
      child: const Center(
        child: Padding(
          padding: EdgeInsets.all(48.0),
          child: Text('这里将显示预约信息列表', style: TextStyle(color: Colors.grey)),
        ),
      ),
    );
  }

  /// 【新增】构建带图标的提示信息行
  Widget _buildInfoItem(IconData icon, String text) {
    return Row(
      children: [
        Icon(icon, color: Colors.blue, size: 20),
        const SizedBox(width: 8),
        Text(text, style: const TextStyle(fontSize: 14, color: Colors.black54)),
      ],
    );
  }
}