flutter_integrated_whb/lib/pages/home/risk/riskControl_page.dart

import 'package:flutter/material.dart';
import 'package:qhd_prevention/customWidget/custom_button.dart';
import 'package:qhd_prevention/pages/home/work/custom_driver_drawer.dart';
import 'package:qhd_prevention/pages/home/risk/risk_detail_page.dart';
import 'package:qhd_prevention/pages/my_appbar.dart';
import 'package:qhd_prevention/tools/tools.dart';
import '../../../http/ApiService.dart';
import '../../../tools/h_colors.dart';
import '/customWidget/search_bar_widget.dart';

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

  @override
  State<RiskControlPage> createState() => _RiskControlPageState();
}

class _RiskControlPageState extends State<RiskControlPage> {

  int _page = 1;
  String searchKey="";
  int _totalPage=1;
  late List<dynamic> _list = [];
  bool _isLoading = false;
  bool _hasMore = true;

  String treeJson="";



  // 风险等级颜色
  final List<Color> _fxColors = [
    const Color(0xFFFADBD9),
    const Color(0xFFFCE6D2),
    const Color(0xFFFDF2CE),
    const Color(0xFFCCE6FF),
  ];
  final TextEditingController _searchController = TextEditingController();

  // 风险等级文本
  final List<String> _levelTexts = ["重大风险/A级", "较大风险/B级", "一般风险/C级", "低风险/D级"];


  @override
  void initState() {
    super.initState();

    getListData(false,"");
    _getListTree();
    SessionService.instance.setRiskWaitInfo("");

  }


  @override
  Widget build(BuildContext context) {
    // 取屏幕宽度
    final double screenWidth = MediaQuery.of(context).size.width;

    return Scaffold(
      appBar: MyAppbar(
        title: "风险分布",
        actions: [
          // 用 Builder 拿到 Scaffold 之下的 context
          Builder(
            builder: (innerContext) {
              return TextButton(
                onPressed: () {
                  // 通过 innerContext 调用 openEndDrawer
                  Scaffold.of(innerContext).openEndDrawer();
                },
                child: Text(
                  "查询",
                  style: TextStyle(color: Colors.white, fontSize: 16),
                ),
              );
            },
          ),
        ],
      ),

      //弹窗
      endDrawer: Drawer(
        // 用 Container 限制宽度为屏幕的 3/5
        child: Container(
          width: screenWidth * 3 / 5,
          color: Colors.white,
          child:  CustomDriverDrawer(
            treeJson,
            onClose: (String riskId,String dept,String level) {

              // _getDangerRecord(-1,_page,startDate,endDate,hazardLevelOption,investigationMethodOption,
              //     dangerStatusOption,selectedCategoryId,selectedDepartmentId,"",searchKey,false);
              _page=1;
              _getRiskRecord(_page,riskId,dept,level,searchKey,false);

            },
          ),
        ),
      ),


      body: SafeArea(
          child: NotificationListener<ScrollNotification>(
              onNotification: _onScroll,
              child:_vcDetailWidget()
          )
      ),
      backgroundColor: Colors.white,
    );
  }

  Widget _vcDetailWidget() {
    return Column(
      children: [
        Padding(
          padding: EdgeInsets.all(10),
          child: SearchBarWidget(
            controller: _searchController,
            onSearch: (keyboard) {
              // 输入请求接口
              _page=1;
              searchKey=keyboard;
              getListData(false,keyboard);
            },
          ),
        ),
        Container(
          height: 5,
          color: h_backGroundColor(),
        ),
        Expanded(
          child:  _list.isEmpty
              ? NoDataWidget.show()
              : ListView.separated(
            separatorBuilder: (_, __) => const Divider(height: 1),
            itemCount: _list.length,
            itemBuilder: (context, index) {
              final item = _list[index];
              return _fxitemCell(item);
            },
          ),
        ),
      ],
    );
  }





  Widget _fxitemCell(final item) {
    int level;
    // 确保level在有效范围内 (1-4)
    // level = level.clamp(1, 4) - 1;
    if(item['LEVELID']=="levelA"){
      level=0;
    }else if(item['LEVELID']=="levelB"){
      level=1;
    }else if(item['LEVELID']=="levelC"){
      level=2;
    }else {
      level=3;
    }

    // 使用GestureDetector包裹整个列表项以添加点击事件
    return GestureDetector(
      onTap: () {
        // 点击后跳转到详情页面
        Navigator.push(
          context,
          MaterialPageRoute(
            builder: (context) => RiskDetailPage(itemData: item),
          ),
        );
      },
      child: Container(
        height: 100,
        color: Colors.white,
        padding: EdgeInsets.symmetric(horizontal: 16), // 添加水平内边距
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            // 左侧信息列
            Expanded(
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    '部位名称：${item['PARTSNAME'] ?? ''}',
                    style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
                    maxLines: 1,
                    overflow: TextOverflow.ellipsis,
                  ),
                  SizedBox(height: 8),
                  Text(
                    '风险点（单元）：${item['RISKUNITNAME'] ?? ''}',
                    style: TextStyle(fontSize: 14, color: Colors.grey),
                  ),
                  SizedBox(height: 4),
                  Text(
                    '管控部门：${item['DEPT_NAME'] ?? ''}',
                    style: TextStyle(fontSize: 14, color: Colors.grey),
                  ),
                ],
              ),
            ),

            // 右侧风险等级和箭头
            Padding(
              padding: EdgeInsets.only(top: 15),
              child: Column(
                children: [
                  // 风险等级标签
                  Row(
                    children: [
                      Container(
                        padding: EdgeInsets.symmetric(
                          horizontal: 8,
                          vertical: 4,
                        ),
                        decoration: BoxDecoration(
                          color: _fxColors[level],
                          borderRadius: BorderRadius.circular(2),
                        ),
                        child: Text(
                          _levelTexts[level],
                          style: TextStyle(fontSize: 12),
                        ),
                      ),
                      SizedBox(width: 30),
                    ],
                  ),
                  SizedBox(height: 12), // 添加间距
                  Row(
                    children: [
                      SizedBox(width: 110),
                      Icon(Icons.arrow_forward_ios_rounded, size: 16),
                    ],
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }


  void getListData(bool addList,String keyWord){
        _getRiskRecord(_page,"","","",keyWord,addList);

  }

  Future<void> _getRiskRecord(int currentPage,
      String riskId,String dept,String level,String keyWord,bool loadMore) async {
    try {
      if (_isLoading) return;
      _isLoading = true;


      final result = await ApiService.getRiskRecordList(  currentPage,
           riskId, dept, level, keyWord);

      if (result['result'] == 'success') {

        _totalPage =result["page"]['totalPage'] ?? 1;
        final List<dynamic> newList = result['varList'] ?? [];
        // setState(() {
        //   _list.addAll(newList);
        // });

        setState(() {
          if (loadMore) {
            _list.addAll(newList);
          } else {
            _list = newList;
          }
          _hasMore = _page < _totalPage;
          // if (_hasMore) _page++;
        });

      }else{
        _showMessage('加载数据失败');
      }

    } catch (e) {
      // 出错时可以 Toast 或者在页面上显示错误状态
      print('加载数据失败：$e');
    } finally {
      // if (!loadMore) LoadingDialogHelper.hide(context);
      _isLoading = false;
    }
  }

  bool _onScroll(ScrollNotification n) {
    if (n.metrics.pixels > n.metrics.maxScrollExtent - 100 &&
        _hasMore && !_isLoading) {

      _page++;
      getListData(true,"");

    }
    return false;
  }


  Future<void> _getListTree() async {
    try {

      final result = await ApiService.getHiddenTreatmentListTree();
      if (result['result'] == 'success') {
        setState(() {
          treeJson= result['zTreeNodes'];
        });

      }else{
        _showMessage('加载数据失败');
      }
    } catch (e) {
      // 出错时可以 Toast 或者在页面上显示错误状态
      print('加载数据失败：$e');
    }
  }

  void _showMessage(String msg) {
    ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(msg)));
  }

}