app-zj/lib/page/sample_task/sample_list_vm.dart

import 'package:dio/dio.dart';
import 'package:easy_refresh/easy_refresh.dart';
import 'package:flutter/material.dart';
import 'package:lszlgl/base/base_vm.dart';
import 'package:lszlgl/main.dart';
import 'package:lszlgl/model/req/sample_task_list_req.dart';
import 'package:lszlgl/model/rsp/sample_task_rsp.dart';

import '../../network/my_api.dart';

class SampleListVM extends BaseVM {
  late List<EasyRefreshController> ctrlList;
  late List<SampleTaskListReq> reqList;
  late List<ValueNotifier<DataStatusModel<List<SampleTaskItem>>>> pageStateList;

  SampleListVM() {
    pageStateList = [
      DataStatusModel<List<SampleTaskItem>>().notifier<DataStatusModel<List<SampleTaskItem>>>(),
      DataStatusModel<List<SampleTaskItem>>().notifier<DataStatusModel<List<SampleTaskItem>>>(),
      DataStatusModel<List<SampleTaskItem>>().notifier<DataStatusModel<List<SampleTaskItem>>>(),
    ];
    ctrlList = [
      EasyRefreshController(controlFinishRefresh: true, controlFinishLoad: true),
      EasyRefreshController(controlFinishRefresh: true, controlFinishLoad: true),
      EasyRefreshController(controlFinishRefresh: true, controlFinishLoad: true),
    ];
    reqList = [
      SampleTaskListReq(deliveryStatus: 0),
      SampleTaskListReq(deliveryStatus: 1),
      SampleTaskListReq(deliveryStatus: 2),
    ];
  }

  /// 当前页面
  final bool currentComplete = false;

  void refresh(int index) {
    ctrlList[index].callRefresh(overOffset: 100);
  }

  void refreshAll() {
    refresh(0);
    refresh(1);
    refresh(2);
  }

  /// 获取数据
  /// * [index] 页面索引
  /// * [refresh] 是否刷新 true=刷新, false=加载更多
  void getData(int index, {bool refresh = true}) async {
    var req = reqList[index];
    var pageState = pageStateList[index];
    var ctrl = ctrlList[index];
    if (refresh) {
      req.pageNo = 1;
    }
    try {
      var value = await MyApi.get().sampleTaskList(req.toJson());
      if (isDispose) return;
      List<SampleTaskItem> data = value.data?.list ?? [];
      var list = pageState.value.data ?? [];
      if (refresh) {
        list = data;
        ctrl.finishRefresh(IndicatorResult.success, true);
        ctrl.resetFooter();
      } else {
        list.addAll(data);
      }
      pageState.update(pageState.value.success(data: list));
      if (data.isEmpty) {
        ctrl.finishLoad(IndicatorResult.noMore, true);
      } else {
        ctrl.finishLoad(IndicatorResult.success, true);
      }
      req.pageNo++;
    } on DioException catch (err) {
      logger.e('${err.message}');
      if (req.pageNo == 1) pageState.update(pageState.value.error());
      if (refresh) {
        ctrl.finishRefresh(IndicatorResult.fail, true);
      } else {
        ctrl.finishLoad(IndicatorResult.fail, true);
      }
    }
  }

  @override
  void dispose() {
    for (var ctrl in ctrlList) {
      ctrl.dispose();
    }
    for (var pageState in pageStateList) {
      pageState.dispose();
    }
    super.dispose();
  }
}