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.fromRGBO(247, 249, 251, 1),
          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.bold,
                          color: Color.fromRGBO(156, 163, 175, 1),
                        ),
                      ),
                    ),
                  ],
                ),
              ),
              // 第二个卡片: 预约信息
              Column(
                children: [
                  _buildSearchView(),
                  controller.hasReservationData
                      ? _buildReservationListView()
                      : _buildEmptyReservationView(),
                ],
              ),

              SizedBox(height: 35.h),
              //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,
                          ),
                        ),
                      ],
                    ),
                  ],
                ),
              ),
              SizedBox(height: 35.h),
            ],
          ),
        ),
      ],
    );
  }

  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: EdgeInsets.fromLTRB(0, 0, 0, 8.h),
      child: Row(
        children: [
          Expanded(
            child: SizedBox(
              height: 42.h,
              child: TextField(
                textAlignVertical: TextAlignVertical.center,
                controller: controller.searchController, // 绑定控制器
                decoration: InputDecoration(
                  filled: true,
                  isDense: true,
                  fillColor: Colors.white,
                  hintText: '输入车牌号或手机号搜索...',
                  contentPadding: const EdgeInsets.symmetric(
                    vertical: 12,
                    horizontal: 16,
                  ),
                  border: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(12),
                    borderSide: BorderSide(color: Color.fromRGBO(229, 231, 235, 1)),
                  ),
                  enabledBorder: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(12),
                    borderSide: BorderSide(color: Color.fromRGBO(229, 231, 235, 1)),
                  ),
                  focusedBorder: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(12),
                    borderSide: BorderSide(
                      color: Color.fromRGBO(229, 231, 235, 1),
                      width: 1.5,
                    ),
                  ),
                  // 清除按钮
                  suffix: Row(
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      IconButton(
                        icon: const Icon(Icons.clear, size: 20),
                        onPressed: () {
                          controller.searchController.clear();
                          controller.fetchReservationData(); // 清除后也刷新一次
                        },
                      ),
                      GestureDetector(
                        onTap: () {
                          // 点击“搜索”按钮时触发
                          FocusScope.of(Get.context!).unfocus(); // 收起键盘
                          controller.fetchReservationData();
                        },
                        child: Container(
                          padding: EdgeInsets.only(
                            left: 16.w,
                            right: 16.h,
                            top: 4.5.h,
                            bottom: 4.5.h,
                          ),
                          decoration: BoxDecoration(
                            color: Color.fromRGBO(1, 113, 55, 1),
                            borderRadius: BorderRadius.circular(8),
                          ),
                          child: Text(
                            "搜索",
                            style: TextStyle(
                              color: Colors.white,
                              fontWeight: FontWeight.w500,
                              fontSize: 12.sp,
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                ),
                onSubmitted: (value) {
                  // 用户在键盘上点击“完成”或“搜索”时触发
                  controller.fetchReservationData();
                },
              ),
            ),
          ),
        ],
      ),
    );
  }

  /// 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: [
          LoginUtil.getAssImg("ic_no_data@2x"),
          SizedBox(height: 16.h),
          Text(
            '暂无订单',
            style: TextStyle(
              fontSize: 16.sp,
              color: Colors.black54,
              fontWeight: FontWeight.w600,
            ),
          ),
          const SizedBox(height: 8),
        ],
      ),
    );
  }

  /// 构建“有预约数据”的列表视图
  Widget _buildReservationListView() {
    return 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,
      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: 0), // 列表项之间的间距
    );
  }

  Widget _buildReservationItem(int index, ReservationModel item) {
    const kPrimaryGreen = Color(0xFF006D35); // 深绿
    const kLineColor = Color(0xFFE0E6ED); // 线条颜色

    return IntrinsicHeight(
      // 保证左侧竖线能跟右侧内容高度对齐
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // 1. 左侧样式区域（竖线 + 圆点）
          SizedBox(
            width: 20,
            child: Column(
              children: [
                // 顶部的装饰圆点
                Container(
                  margin: EdgeInsets.only(top: 3.w),
                  width: 8,
                  height: 8,
                  decoration: BoxDecoration(
                    color: kPrimaryGreen.withOpacity(0.5),
                    shape: BoxShape.circle,
                  ),
                ),
                // 延伸的竖线
                Expanded(child: Container(width: 1, color: kLineColor)),
              ],
            ),
          ),
          // 2. 右侧内容区域（时间 + 卡片数据）
          Expanded(
            child: Padding(
              padding: EdgeInsets.only(left: 10.w, bottom: 8.h),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  // 时间显示
                  Text(
                    item.time, // 格式如 "09:00 - 10:00"
                    style: TextStyle(
                      fontSize: 12.sp,
                      fontWeight: FontWeight.bold,
                      color: Color(0xFF333333),
                    ),
                  ),
                  const SizedBox(height: 10),

                  // 数据卡片
                  _buildInfoCard(item),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }

  /// 右侧具体数据卡片
  Widget _buildInfoCard(ReservationModel item) {
    return Container(
      padding: EdgeInsets.only(left: 16.w, top: 8.5, bottom: 8.5, right: 16.w),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: const Color(0xFFF0F0F0)),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.04),
            blurRadius: 10,
            offset: const Offset(0, 4),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // 车牌与状态标签
          Row(
            children: [
              Text(
                item.plateNumber,
                style: TextStyle(
                  fontSize: 14.sp,
                  fontWeight: FontWeight.bold,
                  color: Color(0xFF333333),
                ),
              ),
              const SizedBox(width: 8),
              _buildStatusTag(item.status),
              Spacer(),
              Text(
                "预约量:${item.amount}",
                style: TextStyle(
                  color: Color(0xFF00A870),
                  fontSize: 12.sp,
                  fontWeight: FontWeight.bold,
                ),
              ),
            ],
          ),
          const SizedBox(height: 8),
          // 联系信息
          Column(
            mainAxisAlignment: MainAxisAlignment.start,
            children: [
              Text(
                "${item.contactPerson} | ${item.contactPhone}",
                style: TextStyle(
                  color: Color(0xFF999999),
                  fontSize: 12.sp,
                  fontWeight: FontWeight.w400,
                ),
              ),
            ],
          ),

          //操作按钮（仅在待处理状态显示）
          if (item.status == ReservationStatus.pending) ...[
            const SizedBox(height: 15),
            const Divider(height: 1, color: Color(0xFFF5F5F5)),
            const SizedBox(height: 12),
            Row(
              mainAxisAlignment: MainAxisAlignment.end,
              children: [
                _buildSmallButton(
                  "拒绝",
                  isOutline: true,
                  onTap: () {
                    controller.rejectReservation(item.id);
                  },
                ),
                const SizedBox(width: 12),
                _buildSmallButton(
                  "确认",
                  isOutline: false,
                  onTap: () {
                    controller.confirmReservation(item.id);
                  },
                ),
              ],
            ),
          ],
        ],
      ),
    );
  }

  /// 通用小按钮
  Widget _buildSmallButton(
    String text, {
    required bool isOutline,
    required VoidCallback onTap,
  }) {
    const kPrimaryGreen = Color(0xFF006D35);
    const kDangerRed = Color(0xFFFF7D7D);

    return GestureDetector(
      onTap: onTap,
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 8),
        decoration: BoxDecoration(
          color: isOutline ? Colors.white : kPrimaryGreen,
          borderRadius: BorderRadius.circular(10),
          border: Border.all(color: isOutline ? kDangerRed : kPrimaryGreen),
        ),
        child: Text(
          text,
          style: TextStyle(
            color: isOutline ? kDangerRed : Colors.white,
            fontSize: 14,
            fontWeight: FontWeight.bold,
          ),
        ),
      ),
    );
  }

  /// 状态标签构建（带圆角和浅色背景）
  Widget _buildStatusTag(ReservationStatus status) {
    Color textColor;
    Color bgColor;
    String text;

    switch (status) {
      case ReservationStatus.pending:
        text = "待加氢";
        textColor = const Color(0xFFFE9E62); // 橘色
        bgColor = const Color(0xFFFFF2E9);
        break;
      case ReservationStatus.completed: // 假设已加氢状态
        text = "已加氢";
        textColor = const Color(0xFF00A870); // 绿色
        bgColor = const Color(0xFFE6F7F1);
        break;
      case ReservationStatus.rejected:
        text = "拒绝加氢";
        textColor = const Color(0xFFFF7D7D); // 红色
        bgColor = const Color(0xFFFFEEEE);
        break;
      case ReservationStatus.unadded:
        text = '未加氢';
        textColor = const Color(0xFFFF7D7D); // 红色
        bgColor = const Color(0xFFFFEEEE);
        break;
      case ReservationStatus.cancel:
        text = '已取消';
        textColor = const Color(0xFFFF7D7D); // 红色
        bgColor = const Color(0xFFFFEEEE);
        break;
      default:
        text = "未知";
        textColor = Colors.grey;
        bgColor = Colors.grey[100]!;
    }

    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
      decoration: BoxDecoration(
        color: bgColor,
        borderRadius: BorderRadius.circular(8),
        border: Border.all(color: textColor.withOpacity(0.3)),
      ),
      child: Text(
        text,
        style: TextStyle(color: textColor, fontSize: 11, fontWeight: FontWeight.bold),
      ),
    );
  }

  /// 右侧操作按钮（拒绝/确认）
  Widget _buildActionButtons(ReservationModel item) {
    return Row(
      mainAxisSize: MainAxisSize.min,
      children: [
        // 拒绝按钮（空心）
        GestureDetector(
          onTap: () => controller.rejectReservation(item.id),
          child: Container(
            padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
            decoration: BoxDecoration(
              borderRadius: BorderRadius.circular(10),
              border: Border.all(color: const Color(0xFFFF7D7D)),
            ),
            child: const Text(
              "拒绝",
              style: TextStyle(
                color: Color(0xFFFF7D7D),
                fontSize: 14,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
        ),
        const SizedBox(width: 8),
        // 确认按钮（实心深绿）
        GestureDetector(
          onTap: () => controller.confirmReservation(item.id),
          child: Container(
            padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
            decoration: BoxDecoration(
              color: const Color(0xFF006D35),
              borderRadius: BorderRadius.circular(10),
            ),
            child: const Text(
              "确认",
              style: TextStyle(
                color: Colors.white,
                fontSize: 14,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
        ),
      ],
    );
  }

  /// 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;
      case ReservationStatus.cancel:
        text = '已取消';
        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)),
      ],
    );
  }
}