app/lib/pages/shop/commission_income_widget.dart

import 'package:flutter/material.dart';
import 'package:recook/constants/api.dart';
import 'package:recook/constants/constants.dart';
import 'package:recook/constants/styles.dart';
import 'package:recook/manager/http_manager.dart';
import 'package:recook/manager/user_manager.dart';
import 'package:recook/models/commission_income_model.dart';
import 'package:recook/widgets/no_data_view.dart';
import 'package:recook/widgets/progress/sc_dialog.dart';
import 'package:recook/widgets/refresh_widget.dart';

class CommissionIncomeWidget extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _CommissionIncomeWidgetState();
  }
  
}

class _CommissionIncomeWidgetState extends State<CommissionIncomeWidget> {
  
  
  int _page = 0;
  CommissionIncomeModel _model;
  List<IncomeList> _listData = [];
  GSRefreshController _gsRefreshController;
  List<String > _dateList = [];
  var _selectValue;

  @override
  void initState() { 
    super.initState();
    // _gsRefreshController = GSRefreshController();
    _gsRefreshController = GSRefreshController(initialRefresh: true);
    _getDateTime();
    _selectValue = _dateList.first;
  }

  @override
  Widget build(BuildContext context, {store}) {
    return Container(
      child: Column(
        children: <Widget>[
          _titleWidget(),
          Expanded(
            child: _refreshWidget(),
          )
        ],
      ),
    );
  }

  _titleWidget(){
    return Container(
      height: 60,
      color: AppColor.tableViewGrayColor,
      child: Row(
        children: <Widget>[
          GestureDetector(
            onTap: (){
            },
            child: Container(
              margin: EdgeInsets.only(left: 15),
              width: 90, height: 30,
              decoration: BoxDecoration(
                borderRadius: BorderRadius.circular(15),
                color: Colors.white
              ),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  // Text('  本月', style: TextStyle(color: Colors.black, fontSize: ScreenAdapterUtils.setSp(12))),
                  Container(width: 10,),
                  _popupMenuWidget(),
                  Icon(Icons.keyboard_arrow_down, color: Colors.grey, size: 16,),
                ],
              ),
            ),
          ),
          Spacer(),
          Container(width: 10,),
        ],
      ),
    );
  }

  _popupMenuWidget(){
    return PopupMenuButton(
      color: Colors.white,
      offset: Offset(0, 100),
      child: Text(_selectValue, style: TextStyle(color: Colors.black),),
      padding: EdgeInsets.all(0.0),
      itemBuilder: (BuildContext context) {
        return _dateList.map<PopupMenuItem<String>>((value){
          return PopupMenuItem<String>(child: Text(value, style: TextStyle(color: Colors.black),), value: value,);
        }).toList();
      },
      onSelected: (String value) {
        _selectValue = value;
        _gsRefreshController.requestRefresh();
        _page = 0;
        setState(() {});
      },
    );
  }

  _refreshWidget(){
    return RefreshWidget(
      isInNest: true,
      controller: _gsRefreshController,
      onRefresh: (){
        _page = 0;
        _getListModel();
      },
      onLoadMore:
          _listData == null || _listData.length < (_page+1)*20 ? null : () {
                  _page++;
                  _getListModel();
                },
      body: _listData == null || _listData.length == 0 ? NoDataView(title:'没有数据...') : 
        ListView.builder(
          itemBuilder: (_, index){
            return _itemWidget(_listData[index]);
          },
          itemCount: _listData.length,
        ),
    );
  }

  _getListModel() async {
    ResultData resultData = await HttpManager.post(ShopApi.income_sales_sum_list, {
      "userId": UserManager.instance.user.info.id,
      "page":_page,
      "date":_selectValue,
    });
    _gsRefreshController.isRefresh()?_gsRefreshController.refreshCompleted():null;
    _gsRefreshController.isLoading()?_gsRefreshController.loadComplete():null;

    if (!resultData.result) {
      GSDialog.of(context).showError(context, resultData.msg);
      return;
    }
    CommissionIncomeModel model = CommissionIncomeModel.fromJson(resultData.data);
    if (model.code != HttpStatus.SUCCESS) {
      GSDialog.of(context).showError(context, model.msg);
      return;
    }
    _model = model;
    if (_page == 0) {
      _listData = model.data.list;
    }else{
      _listData.addAll(model.data.list);
    }
    setState(() {});

  }

  _itemWidget(IncomeList data){
    return Container(
      height: 100,
      child: Row(
        children: <Widget>[
          Container(
            width: 60,
            child: Column(
              mainAxisAlignment: MainAxisAlignment.start,
              children: <Widget>[
                Container(height: 10,),
                Image.asset(data.amount>0?'assets/icon_income_in.png':'assets/icon_income_out.png',width: 40, height: 40,),
              ],
            ),
          ),
          Expanded(
            child: Column(
              children: <Widget>[
                Row(
                  children: <Widget>[
                    Expanded(
                      flex: 4,
                      child: Container(
                        height: 35, alignment: Alignment.centerLeft,
                        padding: EdgeInsets.only(right: 20),
                        child: Text(data.title, maxLines: 1, overflow: TextOverflow.ellipsis, style: TextStyle(color: Colors.black, fontSize: ScreenAdapterUtils.setSp(15)),),
                      )
                    ),
                    Expanded(
                      flex: 1,
                      child: Text(
                        data.amount>0?'+'+data.amount.toString():data.amount.toString() ,
                        style: TextStyle(color: data.amount>0?Colors.red:Colors.green, fontSize: ScreenAdapterUtils.setSp(18)),),
                    ),
                  ],
                ),
                Container(
                  alignment: Alignment.centerLeft,
                  child: Text(data.comment, style:TextStyle(color: Colors.black.withOpacity(0.5),fontSize: ScreenAdapterUtils.setSp(12) ),)
                ),
                Container(
                  margin: EdgeInsets.only(top: 10),
                  alignment: Alignment.centerLeft,
                  child: Text(data.orderTime!=null?data.orderTime:"", style:TextStyle(color: Colors.black.withOpacity(0.5),fontSize: ScreenAdapterUtils.setSp(12) ),)
                ),
                Spacer(),
                Container(
                  height: 0.3,
                  color: Colors.black.withOpacity(0.15),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  _getDateTime(){
    DateTime today = DateTime.now();
    int year = today.year;
    int month = today.month;
    // _dateList.add("$year-$month");
    if (month.toString().length==1) {
        _dateList.add("$year-0$month");
      }else{
        _dateList.add("$year-$month");
      }
    int count = 5;
    while(count > 0){
      count --;
      if (month == 1) {
        year--;
        month = 12;
      }else{
        month --;
      }
      if (month.toString().length==1) {
        _dateList.add("$year-0$month");
      }else{
        _dateList.add("$year-$month");
      }
    }
  }
  
}