import 'dart:math';

import 'package:collection/collection.dart';
import 'package:flutter/material.dart';
import 'package:flutter_slidable/flutter_slidable.dart';
import 'package:get/get.dart';
import 'package:sk_base_mobile/app_theme.dart';
import 'package:sk_base_mobile/util/modal.util.dart';
import 'package:sk_base_mobile/util/screen_adaper_util.dart';
import 'package:sk_base_mobile/widgets/sk_appbar.dart';
import 'package:flutter_sticky_header/flutter_sticky_header.dart';

class SaleQuotationPage extends StatelessWidget {
  SaleQuotationPage({super.key});
  final controller = Get.put(SaleQuotationController());
  final quantityWidth = 55.0;
  final unitPriceWidth = 80.0;
  final amountWidth = 85.0;
  final headerTitleStyle = TextStyle(
      fontSize: ScreenAdaper.sp(40),
      fontWeight: FontWeight.w600,
      color: AppTheme.nearlyBlack);
  final headerBgcolor = Color.fromARGB(255, 238, 238, 238);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: SkAppbar(
        title: '报价计算',
        action: [
          TextButton(
              onPressed: () {},
              child: Row(
                children: [
                  Icon(Icons.add, color: AppTheme.white),
                  Text(
                    '添加组',
                    style: TextStyle(
                        color: AppTheme.white,
                        fontSize: ScreenAdaper.sp(35),
                        fontWeight: FontWeight.w600),
                  )
                ],
              ))
        ],
      ),
      body: SafeArea(
        bottom: ScreenAdaper.isLandspace() ? false : true,
        child: Column(
          children: [
            Container(
                decoration: BoxDecoration(
                    color: headerBgcolor,
                    border: Border(
                        bottom: BorderSide(
                            color: AppTheme.nearlyBlack.withOpacity(0.5)))),
                padding: EdgeInsets.only(
                    left: ScreenAdaper.width(20),
                    top: ScreenAdaper.height(10),
                    bottom: ScreenAdaper.height(10)),
                child: Row(
                  children: [
                    Text(
                      '名称',
                      style: headerTitleStyle,
                    ),
                    const Spacer(),
                    Container(
                      alignment: Alignment.center,
                      width: quantityWidth,
                      // constraints: BoxConstraints(minWidth: quantityWidth),
                      child: Text(
                        '数量',
                        style: headerTitleStyle,
                      ),
                    ),
                    Container(
                      alignment: Alignment.center,
                      width: unitPriceWidth,
                      // constraints: BoxConstraints(minWidth: unitPriceWidth),
                      child: Text(
                        '单价',
                        style: headerTitleStyle,
                      ),
                    ),
                    Container(
                      alignment: Alignment.center,
                      width: amountWidth,
                      child: Text(
                        '总价',
                        style: headerTitleStyle,
                      ),
                    ),
                  ],
                )),
            Expanded(
                child: Obx(() => CustomScrollView(
                      slivers: controller.groups
                          .mapIndexed<Widget>((index, e) => buildBody(e, index))
                          .toList(),
                    ))),
          ],
        ),
      ),
    );
  }

  Widget buildBody(SaleQuotationModel group, int index) {
    final titleStyle = TextStyle(
        fontSize: ScreenAdaper.sp(40),
        color: AppTheme.nearlyBlack,
        fontWeight: FontWeight.w600);
    final subTextStyle =
        TextStyle(color: AppTheme.grey, fontSize: ScreenAdaper.sp(30));

    return SliverStickyHeader.builder(
      builder: (context, state) => Container(
          height: ScreenAdaper.height(80),
          color: headerBgcolor.withOpacity(1.0 - state.scrollPercentage),
          alignment: Alignment.centerLeft,
          child: InkWell(
              onTap: () {
                controller.groups[index].isExpanded.value =
                    !controller.groups[index].isExpanded.value;
              },
              child: Row(
                children: [
                  Obx(() => controller.groups[index].isExpanded.value
                      ? IconButton(
                          padding: EdgeInsets.zero,
                          onPressed: () {
                            controller.groups[index].isExpanded.value = false;
                          },
                          icon: const Icon(
                            Icons.expand_more,
                            color: AppTheme.nearlyBlack,
                          ),
                        )
                      : IconButton(
                          padding: EdgeInsets.zero,
                          onPressed: () {
                            controller.groups[index].isExpanded.value = true;
                          },
                          icon: const Icon(
                            Icons.chevron_right,
                            color: AppTheme.nearlyBlack,
                          ),
                        )),
                  Text(
                    group.name,
                    style: titleStyle,
                  ),
                  const Spacer(),
                  IconButton(
                      onPressed: () {
                        ModalUtil.confirm(title: '确定要删除此组吗?', onConfirm: () {});
                      },
                      icon: const Icon(
                        Icons.remove_circle_outline_outlined,
                        color: AppTheme.nearlyBlack,
                      )),
                  IconButton(
                      onPressed: () {},
                      icon: const Icon(
                        Icons.add_circle_outline,
                        color: AppTheme.nearlyBlack,
                      )),
                ],
              ))),
      sliver: Obx(() => !controller.groups[index].isExpanded.value
          ? SliverList(
              delegate: SliverChildBuilderDelegate(
              (context, i) => SizedBox(),
              childCount: 0,
            ))
          : SliverList(
              delegate: SliverChildBuilderDelegate(
                (context, i) => Slidable(
                  key: UniqueKey(),
                  endActionPane: ActionPane(
                    extentRatio: 0.2,
                    motion: const DrawerMotion(),
                    children: [
                      SlidableAction(
                        padding: EdgeInsets.zero,
                        onPressed: (_) {},
                        backgroundColor: AppTheme.dangerColor,
                        foregroundColor: Colors.white,
                        icon: Icons.delete,
                        label: 'Delete',
                      ),
                    ],
                  ),
                  child: Container(
                    padding: EdgeInsets.only(
                      left: ScreenAdaper.width(20),
                      top: ScreenAdaper.height(15),
                      bottom: ScreenAdaper.height(15),
                    ),
                    constraints:
                        BoxConstraints(minHeight: ScreenAdaper.height(100)),
                    decoration: BoxDecoration(
                      border: Border(
                        bottom: BorderSide(width: 1, color: Colors.grey[200]!),
                      ),
                    ),
                    child: Row(
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: [
                        Expanded(
                          child: Column(
                            mainAxisAlignment: MainAxisAlignment.center,
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Row(
                                children: [
                                  Expanded(
                                    child: Text(
                                      '${group.items[i].name}',
                                      style: TextStyle(
                                          fontSize: ScreenAdaper.sp(35)),
                                    ),
                                  ),
                                ],
                              ),
                              if (group.items[i].spec != null)
                                Row(
                                  children: [
                                    Text(
                                      '规格、型号: ',
                                      style: subTextStyle,
                                    ),
                                    Text(
                                      '${group.items[i].spec ?? ''}',
                                      style: subTextStyle,
                                    ),
                                  ],
                                ),
                              if (group.items[i].unit != null)
                                Row(
                                  children: [
                                    Text(
                                      '单位: ',
                                      style: subTextStyle,
                                    ),
                                    Text(
                                      '${group.items[i].unit ?? ''}',
                                      style: subTextStyle,
                                    ),
                                  ],
                                ),
                              if (group.items[i].remark != null)
                                Row(
                                  children: [
                                    Text(
                                      '备注: ',
                                      style: subTextStyle,
                                    ),
                                    Expanded(
                                      child: Text(
                                        '${group.items[i].remark ?? ''}${group.items[i].remark ?? ''}${controller.products[i].remark ?? ''}',
                                        overflow: TextOverflow.ellipsis,
                                        style: subTextStyle,
                                      ),
                                    ),
                                  ],
                                ),
                            ],
                          ),
                        ),
                        VerticalDivider(),
                        Container(
                          alignment: Alignment.center,
                          width: quantityWidth,
                          child: Text('13500'),
                        ),
                        Container(
                          alignment: Alignment.center,
                          width: unitPriceWidth,
                          child: Text('￥470000'),
                        ),
                        Container(
                          alignment: Alignment.center,
                          width: amountWidth,
                          child: Text('￥63450000'),
                        ),
                      ],
                    ),
                  ),
                ),
                childCount: !controller.groups[index].isExpanded.value
                    ? 0
                    : group.items.length,
              ),
            )),
    );
  }
}

class SaleQuotationModel {
  final String name;
  RxBool isExpanded = true.obs;
  List<SaleQuotationItemModel> items;
  SaleQuotationModel({required this.name, required this.items});
}

class SaleQuotationItemModel {
  final String name;
  // 规格
  final String? spec;
  final String? unit;
  final String? remark;
  // 成本
  final double? cost;
  SaleQuotationItemModel(
      {required this.name, this.spec, this.unit, this.remark, this.cost});
}

class SaleQuotationController extends GetxController {
  static SaleQuotationController get to => Get.find();

  RxList<SaleQuotationItemModel> products = RxList([
    SaleQuotationItemModel(name: '矿用本安型支架控制器', unit: '台', spec: 'ZDYZ-Z'),
    SaleQuotationItemModel(name: '矿用本安型电磁阀驱动器'),
    SaleQuotationItemModel(name: '矿用隔爆兼本安型电源'),
    SaleQuotationItemModel(name: '矿用本安型隔离耦合器'),
    SaleQuotationItemModel(name: '钢丝编织橡胶护套连接器'),
    SaleQuotationItemModel(name: '钢丝编织橡胶护套连接器', remark: '控制器-控制器'),
    SaleQuotationItemModel(name: '钢丝编织橡胶护套连接器', remark: '控制器-驱动器'),
    SaleQuotationItemModel(name: '钢丝编织橡胶护套连接器', remark: '控制器-隔离耦合器'),
    SaleQuotationItemModel(name: '矿用本安型支架无线遥控器'),
    SaleQuotationItemModel(name: '矿用隔爆兼本安型电源'),
    SaleQuotationItemModel(name: '电液换向阀(10功能10接口)', remark: '中间过渡架主阀组'),
    SaleQuotationItemModel(name: '电液换向阀(20功能20接口)', remark: '端头架主阀组'),
    SaleQuotationItemModel(name: '自动反冲洗过滤装置', remark: '流量:900L/min,过滤精度25μm'),
    SaleQuotationItemModel(name: '全自动反冲洗过滤器电缆', remark: '控制器-自动反冲洗'),
    SaleQuotationItemModel(name: '矿用本安型位移传感器'),
    SaleQuotationItemModel(name: '矿用本安型压力传感器'),
    SaleQuotationItemModel(name: '矿用本安型红外发射器'),
    SaleQuotationItemModel(name: '矿用本安型LED信号灯'),
    SaleQuotationItemModel(name: '倾角传感器'),
    SaleQuotationItemModel(name: '各类安装附件'),
  ]);
  RxList<SaleQuotationModel> groups = RxList<SaleQuotationModel>([]);
  @override
  void onReady() {
    groups.assignAll([
      SaleQuotationModel(name: '中间过渡架电控部分', items: products),
      SaleQuotationModel(name: '端头架电控部分', items: products),
      SaleQuotationModel(name: '主阀部分', items: products),
      SaleQuotationModel(name: '自动反冲洗过滤器部分', items: products),
      SaleQuotationModel(name: '位移测量部分', items: products),
      SaleQuotationModel(name: '压力检测部分', items: products),
      SaleQuotationModel(name: '煤机定位部分', items: products),
      SaleQuotationModel(name: '姿态检测部分', items: products),
    ]);

    super.onReady();
  }
}