import 'package:flutter/material.dart';
import 'package:getx_scaffold/getx_scaffold.dart';
import 'package:ln_jq_app/common/login_util.dart';
import 'package:ln_jq_app/common/styles/theme.dart';
import 'package:ln_jq_app/pages/b_page/history/view.dart';
import 'package:ln_jq_app/pages/c_page/message/view.dart';

import 'controller.dart';

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

  @override
  Widget build(BuildContext context) {
    return GetBuilder<SiteController>(
      init: SiteController(),
      id: 'site',
      builder: (_) {
        return Scaffold(
          backgroundColor: Color(0xFFF5F7F9),
          body: SingleChildScrollView(child: _buildView(context)),
        );
      },
    );
  }

  // 主视图
  Widget _buildView(BuildContext context) {
    return Column(
      children: [
        // 第一个卡片: 今日预约统计
        _buildTopSection(context),
        Padding(
          padding: EdgeInsets.only(left: 20.w, right: 20.w),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Padding(
                padding: EdgeInsets.only(top: 17.h, bottom: 10.h),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Text(
                      "预约信息",
                      style: TextStyle(
                        color: Color.fromRGBO(51, 51, 51, 1),
                        fontWeight: FontWeight.w600,
                        fontSize: 14.sp,
                      ),
                    ),
                    GestureDetector(
                      onTap: () {
                        Get.to(
                          () => HistoryPage(),
                          arguments: {'stationName': controller.name},
                        );
                      },
                      child: Text(
                        '历史记录',
                        style: TextStyle(
                          fontSize: 14.sp,
                          fontWeight: FontWeight.w500,
                          color: Color.fromRGBO(156, 163, 175, 1),
                        ),
                      ),
                    ),
                  ],
                ),
              ),
              // 第二个卡片: 预约信息
              Column(
                children: [
                  _buildSearchView(),
                  controller.hasReservationData
                      ? _buildReservationListView()
                      : _buildEmptyReservationView(),
                ],
              ),

              //第三部分
              Container(
                padding: const EdgeInsets.all(15),
                decoration: BoxDecoration(
                  color: const Color(0xFFF1F9F6), // 极浅绿色背景
                  borderRadius: BorderRadius.circular(10),
                ),
                child: Row(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Icon(
                      Icons.info_outline,
                      color: Color.fromRGBO(1, 113, 55, 1),
                      size: 20,
                    ),
                    SizedBox(width: 8.w),
                    Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          "系统提醒",
                          style: TextStyle(
                            color: Color.fromRGBO(1, 113, 55, 1),
                            fontWeight: FontWeight.bold,
                            fontSize: 14.sp,
                          ),
                        ),
                        SizedBox(height: 6.h),
                        Text(
                          "数据每五分钟自动刷新，如需实时更新请下拉页面",
                          style: TextStyle(
                            color: Color.fromRGBO(1, 113, 55, 0.8),
                            fontSize: 12.sp,
                          ),
                        ),
                        SizedBox(height: 6.h),
                        Text(
                          "如有疑问请联系客服：400-021-1773",
                          style: TextStyle(
                            color: Color.fromRGBO(1, 113, 55, 0.8),
                            fontSize: 12.sp,
                          ),
                        ),
                      ],
                    ),
                  ],
                ),
              ),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildTopSection(BuildContext context) {
    return Container(
      width: double.infinity,
      decoration: const BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.vertical(bottom: Radius.circular(20)),
      ),
      padding: EdgeInsets.only(
        top: MediaQuery.of(context).padding.top + 10,
        left: 20,
        right: 20,
        bottom: 25,
      ),
      child: Column(
        children: [
          Row(
            children: [
              CircleAvatar(
                radius: 25,
                backgroundColor: Colors.white,
                child: LoginUtil.getAssImg('ic_user_logo@2x'),
              ),
              const SizedBox(width: 12),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Row(
                      children: [
                        Text(
                          "今日预约统计",
                          style: TextStyle(fontSize: 14.sp, fontWeight: FontWeight.w400),
                        ),
                        const SizedBox(width: 8),
                      ],
                    ),
                    const SizedBox(height: 4),
                    Text(
                      "Today's Reservation Statistics",
                      style: TextStyle(color: Colors.grey[500], fontSize: 13),
                    ),
                  ],
                ),
              ),
              IconButton(
                onPressed: () {
                  Get.to(() => const MessagePage());
                },
                style: IconButton.styleFrom(
                  backgroundColor: Colors.grey[100],
                  padding: const EdgeInsets.all(8),
                ),
                icon: Badge(
                  smallSize: 8,
                  backgroundColor: controller.isNotice ? Colors.red : Colors.transparent,
                  child: const Icon(
                    Icons.notifications_outlined,
                    color: Colors.black87,
                    size: 30,
                  ),
                ),
              ),
            ],
          ),
          const SizedBox(height: 25),
          Row(
            children: [
              _buildStatBox("剩余氢量", "remaining quantity", controller.leftHydrogen, "kg"),
              SizedBox(width: 4.w),
              _buildStatBox(
                "今日加氢量",
                "Have been added",
                controller.orderTotalAmount,
                "kg",
              ),
              SizedBox(width: 4.w),
              _buildStatBox(
                "未加氢总量",
                "No quantity added",
                controller.orderUnfinishedAmount,
                "kg",
              ),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildStatBox(String title, String enTitle, String value, String unit) {
    return Expanded(
      child: Container(
        padding: EdgeInsets.only(left: 12.w, top: 4.h, bottom: 4.h),
        decoration: BoxDecoration(
          color: Color(0xFFF5F7F9),
          borderRadius: BorderRadius.circular(12),
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              title,
              style: TextStyle(
                fontSize: 12.sp,
                color: Color.fromRGBO(51, 51, 51, 0.8),
                fontWeight: FontWeight.w400,
              ),
            ),
            Text(enTitle, style: const TextStyle(fontSize: 9, color: Colors.grey)),
            const SizedBox(height: 8),
            Row(
              crossAxisAlignment: CrossAxisAlignment.end,
              children: [
                Text(
                  value,
                  style: TextStyle(
                    fontSize: 12.sp,
                    fontWeight: FontWeight.w500,
                    color: Color(0xFF333333),
                  ),
                ),
                const SizedBox(width: 2),
                Text(unit, style: const TextStyle(fontSize: 11, color: Colors.grey)),
              ],
            ),
          ],
        ),
      ),
    );
  }

  //搜索输入框，提示可以输入车牌或者手机
  Widget _buildSearchView() {
    return Padding(
      padding: const EdgeInsets.fromLTRB(16, 12, 16, 0),
      child: Row(
        children: [
          Expanded(
            child: SizedBox(
              height: 44,
              child: TextField(
                controller: controller.searchController, // 绑定控制器
                decoration: InputDecoration(
                  hintText: '输入车牌号或完整手机号查询',
                  contentPadding: const EdgeInsets.symmetric(horizontal: 16),
                  border: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(22),
                    borderSide: BorderSide(color: Colors.grey.shade300),
                  ),
                  enabledBorder: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(22),
                    borderSide: BorderSide(color: Colors.grey.shade300),
                  ),
                  focusedBorder: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(22),
                    borderSide: BorderSide(color: Get.theme.primaryColor, width: 1.5),
                  ),
                  // 清除按钮
                  suffixIcon: IconButton(
                    icon: const Icon(Icons.clear, size: 20),
                    onPressed: () {
                      controller.searchController.clear();
                      controller.fetchReservationData(); // 清除后也刷新一次
                    },
                  ),
                ),
                onSubmitted: (value) {
                  // 用户在键盘上点击“完成”或“搜索”时触发
                  controller.fetchReservationData();
                },
              ),
            ),
          ),
          const SizedBox(width: 10),
          ElevatedButton(
            onPressed: () {
              // 点击“搜索”按钮时触发
              FocusScope.of(Get.context!).unfocus(); // 收起键盘
              controller.fetchReservationData();
            },
            style: ElevatedButton.styleFrom(
              shape: const CircleBorder(),
              padding: const EdgeInsets.all(8),
            ),
            child: const Icon(Icons.search_rounded),
          ),
        ],
      ),
    );
  }

  /// 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),
          ),
        ],
      ),
    );
  }

  /// 构建“有预约数据”的列表视图
  Widget _buildReservationListView() {
    return Container(
      color: Colors.white,
      child: ListView.separated(
        shrinkWrap: true,
        physics: const NeverScrollableScrollPhysics(),
        // 因为外层已有滚动，这里禁用内部滚动
        itemCount: controller.reservationList.length,
        padding: const EdgeInsets.all(12.0),
        itemBuilder: (context, index) {
          final item = controller.reservationList[index];
          // 调用新的方法来构建每一项
          return _buildReservationItem(index, item);
        },
        separatorBuilder: (context, index) => const SizedBox(height: 12), // 列表项之间的间距
      ),
    );
  }

  Widget _buildReservationItem(int index, ReservationModel item) {
    return Container(
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(8.0),
        border: Border.all(color: Colors.grey[200]!, width: 1.0),
        boxShadow: [
          BoxShadow(
            color: Colors.grey.withOpacity(0.1),
            spreadRadius: 1,
            blurRadius: 3,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Column(
        children: [
          // 顶部：序号、车牌号、状态
          Padding(
            padding: const EdgeInsets.fromLTRB(8, 12, 16, 12),
            child: Row(
              children: [
                // 序号
                Container(
                  width: 24,
                  height: 24,
                  alignment: Alignment.center,
                  decoration: const BoxDecoration(
                    color: Colors.blue,
                    shape: BoxShape.circle,
                  ),
                  child: Text(
                    "${index + 1}",
                    style: const TextStyle(
                      color: Colors.white,
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                ),
                const SizedBox(width: 8),
                const Icon(Icons.directions_car, color: Colors.black54),
                const SizedBox(width: 4),
                // 车牌号
                Expanded(
                  child: Text(
                    item.plateNumber,
                    style: const TextStyle(
                      fontSize: 16,
                      fontWeight: FontWeight.bold,
                      color: AppTheme.themeColor,
                    ),
                  ),
                ),
                // 状态标签
                _buildStatusChip(item.status),
              ],
            ),
          ),
          const Divider(height: 1),
          // 中部：详细信息
          Padding(
            padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 12.0),
            child: Column(
              children: [
                _buildDetailRow(
                  Icons.local_gas_station,
                  '加氢量',
                  item.amount,
                  valueColor: Colors.red,
                ),
                const SizedBox(height: 8),
                _buildDetailRow(Icons.access_time, '预约时间', item.time),
                const SizedBox(height: 8),
                _buildDetailRow(Icons.person, '联系人', item.contactPerson),
                const SizedBox(height: 8),
                _buildDetailRow(
                  Icons.phone,
                  '联系电话',
                  item.contactPhone,
                  valueColor: AppTheme.themeColor,
                ),
              ],
            ),
          ),
          // 底部：操作按钮 (仅在待处理时显示)
          if (item.status == ReservationStatus.pending)
            Padding(
              padding: const EdgeInsets.fromLTRB(16, 0, 16, 12),
              child: Row(
                children: [
                  Expanded(
                    child: ElevatedButton(
                      onPressed: () => controller.confirmReservation(item.id),
                      style: ElevatedButton.styleFrom(backgroundColor: Colors.blue),
                      child: const Text('确认'),
                    ),
                  ),
                  const SizedBox(width: 16),
                  Expanded(
                    child: ElevatedButton(
                      onPressed: () => controller.rejectReservation(item.id),
                      style: ElevatedButton.styleFrom(backgroundColor: Colors.red),
                      child: const Text('拒绝'),
                    ),
                  ),
                ],
              ),
            ),
        ],
      ),
    );
  }

  /// 构建状态标签
  Widget _buildStatusChip(ReservationStatus status) {
    String text;
    Color color;
    switch (status) {
      case ReservationStatus.pending:
        text = '待加氢';
        color = Colors.orange;
        break;
      case ReservationStatus.completed:
        text = '已加氢';
        color = Colors.greenAccent;
        break;
      case ReservationStatus.rejected:
        text = '拒绝加氢';
        color = Colors.red;
        break;
      case ReservationStatus.unadded:
        text = '未加氢';
        color = Colors.red;
        break;
      default:
        text = '未知状态';
        color = Colors.grey;
        break;
    }
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
      decoration: BoxDecoration(
        color: color.withOpacity(0.1),
        borderRadius: BorderRadius.circular(12),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Icon(Icons.circle, color: color, size: 8),
          const SizedBox(width: 4),
          Text(
            text,
            style: TextStyle(color: color, fontSize: 12, fontWeight: FontWeight.bold),
          ),
        ],
      ),
    );
  }

  /// 构建信息详情行
  Widget _buildDetailRow(
    IconData icon,
    String label,
    String value, {
    Color valueColor = Colors.black87,
  }) {
    return Row(
      children: [
        Icon(icon, color: Colors.grey, size: 20),
        const SizedBox(width: 8),
        Text('$label: ', style: const TextStyle(fontSize: 14, color: Colors.grey)),
        Expanded(
          child: Text(
            value,
            style: TextStyle(
              fontSize: 14,
              color: valueColor,
              fontWeight: FontWeight.w500,
            ),
          ),
        ),
      ],
    );
  }

  /// 底部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)),
      ],
    );
  }
}