YYHome/packages/cpt_services/lib/modules/services/homeService/home_service_vm.dart

import 'package:cs_resources/generated/assets.dart';
import 'package:domain/entity/garage_sale_rent_entity.dart';
import 'package:domain/entity/newsfeed_detail_entity.dart';
import 'package:flutter/cupertino.dart';
import 'package:plugin_platform/engine/toast/toast_engine.dart';
import 'package:riverpod_annotation/riverpod_annotation.dart';
import 'package:router/ext/auto_router_extensions.dart';
import 'package:shared/utils/log_utils.dart';
import 'package:widgets/load_state_layout.dart';
import 'package:widgets/widget_export.dart';

import '../../../respository/services_respository.dart';
import '../../../router/page/services_page_router.dart';
import 'home_service_state.dart';

part 'home_service_vm.g.dart';

@riverpod
class HomeServiceVm extends _$HomeServiceVm {
  late ServicesRespository servicesRespositoryInstance;
  bool _needShowPlaceholder = false; //是否展示LoadingView
  int _page = 1;  // 当前页
  int _limit = 10; // 每页数量
  int _count = 0; // 总条数

  Map<String, dynamic> _queryParams = {
    'category_id': null,
    'keyword': null,
    'is_liked': null,
  };

  // Refresh 控制器
  final EasyRefreshController refreshController = EasyRefreshController(
    controlFinishRefresh: true,  //允许刷新
    controlFinishLoad: true,   //允许加载
  );

  HomeServiceState initState() {
    return HomeServiceState(
        list: []
    );
  }

  @override
  HomeServiceState build(){
    // 引入数据仓库
    // servicesRespositoryInstance = ref.read(commonGarageRespositoryProvider);
    final state = initState();
    Log.d("--------------------------build---------------------");

    return state;
  }


  //刷新页面状态
  void changeLoadingState(LoadState loadState, String? errorMsg) {
    state = state.copyWith(
        loadingState: loadState,
        errorMessage: errorMsg
    );
  }

  // 初始化页面数据
  initPageData() {
    Log.d("----home_service_vm-----initPageData   ${state.loadingState}");
    onRefresh();
  }

  // 上拉加载 更多
  Future loadMore() async {
    Log.d("----home_service_vm-----loadMore");
    _page++;
    getListData();
  }


  // 下拉刷新
  Future onRefresh() async {
    // 当前pageView 页面正处于显示状态
    Log.d("----forsale_vm-----onRefresh ");
    // await Future.delayed(const Duration(seconds: 2));
    _page = 1;
    getListData();
  }


  // 手动进行刷新
  Future triggerRefresh() async {
    Log.d("trggerRefresh");
    refreshController.callRefresh();
  }

  // 手动进行刷新
  Future directRefresh() async {
    state = state.copyWith(list:[]);
    // 注意：由于 nestedscrollview 嵌套easyfresh 组件  refreshController.callRefresh() 自动刷新只能滚动顶部但是不会触发下拉刷新，这里调用是 用到了将其滚动到顶部的作用，进而刷新操作主动掉接口
    // https://github.com/xuelongqy/flutter_easy_refresh/issues/692
    refreshController.callRefresh();
    refreshController.resetFooter();
    _page = 1;
    _needShowPlaceholder = true;
    getListData();
  }


  // 重试请求
  Future retryRequest() async {
    _page = 1;
    _needShowPlaceholder = true;
    getListData();
  }


  // 获取list 列表数据
  Future getListData<T>({bool? isLoadMore}) async {
    if (_needShowPlaceholder) {
      changeLoadingState(LoadState.State_Loading, null);
    }

    List<Map<String, dynamic>> list = [
      {
        'id':1,
        'service_type': 0,  // 0 房屋保洁 1 空调保洁  2 维修
        'goods_img':  'https://img2.baidu.com/it/u=3489233687,2364672159&fm=253&fmt=auto&app=120&f=JPEG?w=507&h=500',
        'resources': ['https://img2.baidu.com/it/u=3489233687,2364672159&fm=253&fmt=auto&app=120&f=JPEG?w=507&h=500'],
        'title': 'House Cleaning Services',
        'price': '\$66',
        'isCollection': true,
        'collection_num': '12',
        'publisher': 'William Jefferson',
        'publish_time': 'June 17,2016 at 7:23 p.m.',
        'publisher_avator': Assets.communityCamera
      },
      {
        'id':1,
        'service_type': 1,  // 0 房屋保洁 1 空调保洁  2 维修
        'goods_img':  'https://img2.baidu.com/it/u=3489233687,2364672159&fm=253&fmt=auto&app=120&f=JPEG?w=507&h=500',
        'title': 'Electronic keyboard',
        'price': '\$66',
        'isCollection': true,
        'collection_num': '12',
        'publisher': 'William Jefferson',
        'publish_time': 'June 17,2016 at 7:23 p.m.',
        'publisher_avator': Assets.communityCamera
      },
      {
        'id':1,
        'service_type': 2,  // 0 房屋保洁 1 空调保洁  2 维修
        'goods_img':  'https://img2.baidu.com/it/u=3489233687,2364672159&fm=253&fmt=auto&app=120&f=JPEG?w=507&h=500',
        'title': 'Electronic keyboard',
        'price': '\$66',
        'isCollection': true,
        'collection_num': '12',
        'publisher': 'William Jefferson',
        'publish_time': 'June 17,2016 at 7:23 p.m.',
        'publisher_avator': Assets.communityCamera
      },
    ];
    handlerResultData(true, list:list);

    // try {
    //   //请求网络
    //   Map<String, dynamic>  params = {
    //     "type": 1,  // 类型(1=Sale,2=Rent)
    //     "category_id": _queryParams['category_id'],
    //     "keyword": _queryParams['keyword'],
    //     "page": _page,
    //     "limit": _limit,
    //   };
    //   Log.d("请求参数------$params");
    //   final result = await servicesRespositoryInstance.fetchGarageDataList(params);
    //   //校验成功失败
    //   if (result.isSuccess) {
    //     // handlerResultList((result.data as GarageSaleRentEntity).list as List<GarageSaleRentList>, isLoadMore ?? false);
    //   } else {
    //     String errorMessage = result.errorMsg!;
    //     changeLoadingState(LoadState.State_Error, errorMessage);
    //     ToastEngine.show(result.errorMsg ?? "Network Load Error");
    //   }
    // } catch (e) {
    //   ToastEngine.show("Error: $e");
    // }

    // 最后赋值
    _needShowPlaceholder = false;

  }

  handlerResultData(bool isList, {List<Map<String, dynamic>>? list, dynamic? data}){
    Future.delayed(const Duration(seconds: 1)).then((value) {
      if(isList){
        // list 数据模式
        if(list != null && list.isNotEmpty){
          if(_page == 1){
            state.list.clear();
            state.list!.addAll(list);
            refreshController.finishRefresh();
            changeLoadingState(LoadState.State_Success, null);
          }else {
            final allList = state.list;
            allList!.addAll(list);
            state = state.copyWith(list: allList);
            refreshController.finishLoad();
          }
        }else {
          if(_page == 1){
            state.list.clear();
            changeLoadingState(LoadState.State_Empty, null);
            refreshController.finishRefresh();
          }else {
            refreshController.finishLoad(IndicatorResult.noMore);
          }
        }
      }else {
        // 单个数据模式
        if(data!=null){
          if(_page == 1){
            refreshController.finishRefresh();
          }else{
            refreshController.finishLoad();
          }
          changeLoadingState(LoadState.State_Success, null);
        }else {
          if(_page == 1){
            refreshController.finishRefresh();
          }else{
            refreshController.finishLoad();
          }
          changeLoadingState(LoadState.State_Empty, null);
        }
      }
    });
  }

  void handlerResultList(List<GarageSaleRentList>? list, bool isLoadMore) {
    if (list != null && list.isNotEmpty) {
      //有数据，判断是刷新还是加载更多的数据
      if (_page == 1) {
        //刷新的方式
        state.list!.clear();
        state.list!.addAll(list.map((item) => item.toJson()).toList());
        refreshController.finishRefresh();
        //更新展示的状态
        changeLoadingState(LoadState.State_Success, null);
      } else {
        //加载更多
        final allList = state.list;
        allList!.addAll(list.map((item) => item.toJson()).toList());
        state = state.copyWith(list: allList);
        refreshController.finishLoad();
      }
    } else {
      if (_page == 1) {
        //展示无数据的布局
        state.list!.clear();
        changeLoadingState(LoadState.State_Empty, null);
        refreshController.finishRefresh();
      } else {
        //展示加载完成，没有更多数据了
        if (_page == 1) {
          //展示无数据的布局
          state.list!.clear();
          changeLoadingState(LoadState.State_Empty, null);
          refreshController.finishRefresh();
        } else {
          //展示加载完成，没有更多数据了
          if(state.list!.length == 0){
            changeLoadingState(LoadState.State_Empty, null);
            refreshController.finishLoad();
          }else {
            if(_needShowPlaceholder){
              changeLoadingState(LoadState.State_Success, null);
            }
          }
          //更新展示的状态
          refreshController.finishLoad(IndicatorResult.noMore);
        }
      }
    }
  }


  // 点击 收藏/取消收藏
  Future<bool?> handlerClickCollection(int id, bool? isCollection) async{
    try {
      //请求网络
      Map<String, dynamic>  params = {
        "id": id,
      };
      Log.d("请求参数------$params");
      final result = await servicesRespositoryInstance.fetchGarageColleciton(params);
      //校验成功失败
      if (result.isSuccess) {
        // 修改 该id 的 liked 和 likes_count 字段
        state.list!.forEach((Map<String, dynamic> element) {
          GarageSaleRentList elementEntity = GarageSaleRentList.fromJson(element);

          if(elementEntity.id == id){
            elementEntity.liked = !elementEntity.liked!;
            elementEntity.likesCount = elementEntity.liked! ? (elementEntity.likesCount! + 1) : (elementEntity.likesCount! - 1);
          }

          element = elementEntity.toJson();

        });
        return true;
      } else {
        String errorMessage = result.errorMsg!;
        changeLoadingState(LoadState.State_Error, errorMessage);
        ToastEngine.show(result.errorMsg ?? "Network Load Error");
      }
    } catch (e) {
      Log.e("Error: $e");
      ToastEngine.show("Error: $e");
    }
  }

  // 设置当前的 _queryParams
  setCurrentQueryParams(Map<String, dynamic> params){
    _queryParams.addAll(params);
  }

  // 获取当前的 _queryParams
  Map<String, dynamic> getCurrentQueryParams(String? key){
    if(key!=null && key!.isNotEmpty){
      return _queryParams[key];
    }
    return _queryParams;
  }

  // 去详情页面
  void handlerGotoDetail({BuildContext? context, required int id, String type='forSale'}){
    Log.d("去详情页面");
    // appRouter.push(GaragesaleDetailPageRoute(id: id, type: 'forSale'));
  }
}