WuHan/DM_Weight/ViewModels/ReturnEmptyWindowViewModel.cs

using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using Prism.Services.Dialogs;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using DM_Weight.Models;
using DM_Weight.util;
using System.Reflection.PortableExecutable;
using System.Configuration;
using DM_Weight.msg;
using Prism.Events;
using DM_Weight.Port;
using System.Threading.Channels;

namespace DM_Weight.ViewModels
{
    public class ReturnEmptyWindowViewModel : BindableBase, IConfirmNavigationRequest, IRegionMemberLifetime
    {



        private List<ChannelStock>? _channelStocks;

        public List<ChannelStock>? Channels
        {
            get { return _channelStocks; }
            set { SetProperty(ref _channelStocks, value); }
        }

        private ChannelStock _channelStock;

        public ChannelStock Channel
        {
            get { return _channelStock; }
            set { SetProperty(ref _channelStock, value); }
        }
        public event Action<IDialogResult> RequestClose;
        IDialogService _dialogService;
        IEventAggregator _eventAggregator;
        public ReturnEmptyWindowViewModel(IDialogService dialogService, IEventAggregator eventAggregator)
        {
            _dialogService = dialogService;
            _eventAggregator = eventAggregator;
        }

        public DelegateCommand RowSelected
        {
            get => new DelegateCommand(() =>
            {
                if (Channel != null && Channel.DrugId != null)
                {
                    Channels = Channels.Select(x =>
                    {
                        if (x.Id == Channel.Id)
                        {
                            x.IsSelected = !x.IsSelected;
                        }
                        return x;
                    }).ToList();
                    

                }
                else if(Channel != null && Channel.DrugId == null)
                {

                    DialogParameters dialogParameters = new DialogParameters();
                    dialogParameters.Add("DrawerNo", Channel.DrawerNo);
                    DialogServiceExtensions.ShowDialogHost(_dialogService, "BindingChannelDialog", dialogParameters, DoDialogResult, "RootDialog");
                }

                //if (Channel != null && Channel.DrugId == null)
                //{
                //    DialogParameters dialogParameters = new DialogParameters();
                //    dialogParameters.Add("DrawerNo", Channel.DrawerNo);
                //    DialogServiceExtensions.ShowDialogHost(_dialogService, "BindingChannelDialog", dialogParameters, DoDialogResult, "RootDialog");
                //}
                //else if (Channel != null && Channel.CanReturnQuantity > 0)
                //{
                //    DialogParameters dialogParameters = new DialogParameters();
                //    dialogParameters.Add("channel", Channel);
                //    DialogServiceExtensions.ShowDialogHost(_dialogService, "ReturnEmptyDialog", dialogParameters, DoDialogResult, "RootDialog");
                //}
            });
        }
        //还空瓶
        public DelegateCommand ReturnEmptyCommand
        {
            get => new DelegateCommand(() =>
            {
                List<ChannelStock> records = Channels.FindAll(it => it.IsSelected).ToList();
                if (records.Count > 0)
                {
                    if(records.Count > 1&&records.FindAll(rs=>rs.CanReturnQuantity>0).Count>1)
                    {
                        //还空瓶只能选择一条进行归还
                        AlertMsg alertMsg = new AlertMsg
                        {
                            Message = "请选择一条且可归还数量不为0的数据进行归还",
                            Type = MsgType.ERROR,
                        };
                        _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                    }
                    else
                    {                        
                        DialogParameters dialogParameters = new DialogParameters();
                        dialogParameters.Add("channel", records.Single(rs => rs.CanReturnQuantity > 0));
                        DialogServiceExtensions.ShowDialogHost(_dialogService, "ReturnEmptyDialog", dialogParameters, DoDialogResult, "RootDialog");
                    }
                }
                else
                {
                    AlertMsg alertMsg = new AlertMsg
                    {
                        Message = "请选择要还的空瓶",
                        Type = MsgType.ERROR,
                    };
                    _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                }
            });
        }



        private List<ChannelStock> csList=new List<ChannelStock>();
        //销毁
        public DelegateCommand DestoryCommand
        {
            get => new DelegateCommand(() =>
            {
                if (Channels != null && Channels.Count > 0)
                {
                    csList = Channels.FindAll(it => it.IsSelected && it.Quantity > 0).ToList();
                    if (csList != null && csList.Count > 0)
                    {
                        //RequestClose?.Invoke(new DialogResult(ButtonResult.Cancel));
                        //DialogParameters dialogParameters = new DialogParameters();
                        //List<string> msg = new List<string>();
                        //msg.Add("确认");
                        //msg.Add("确认要销毁吗？");
                        //dialogParameters.Add("msgInfo", msg);
                        //DialogServiceExtensions.ShowDialogHost(_dialogService, "ConfirmMessageDialog", dialogParameters, DestoryDialogResult, "RootDialog");

                        csList.ForEach(it => it.Quantity = 0);
                        var f = SqlSugarHelper.Db.UseTran(() =>
                        {
                            SqlSugarHelper.Db.Updateable(csList).ExecuteCommand();
                            string[] str=new string[csList.Count];
                            str=csList.Select(t=>t.DrugId).ToArray();
                            List<MachineRecord> machines = SqlSugarHelper.Db.Queryable<MachineRecord>()
                            //.InnerJoin<ChannelStock>((mr, cs) => mr.DrugId == cs.DrugId)
                             //.Where(mr => mr.DrugId.Contains(csList.Select(it => it.DrugId).ToList()) && mr.Type = 32)
                             .Where(mr => mr.MachineId.Equals(ConfigurationManager.AppSettings["machineId"] ?? "DM1"))
                             .In(mr=>mr.DrugId, str)
                             .Where(mr => mr.Type == 32)
                             .ToList();
                            SqlSugarHelper.Db.Updateable(machines).ReSetValue(mr =>
                            {
                                mr.IsDestroy = 1;
                            }).ExecuteCommand();
                            return true;
                        });
                        if (f.Data)
                        {

                            RequestData();
                            AlertMsg alertMsg = new AlertMsg
                            {
                                Message = "销毁完成",
                                Type = MsgType.SUCCESS,
                            };
                            _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                        }
                        if (!f.IsSuccess)
                        {
                            AlertMsg alertMsg = new AlertMsg
                            {
                                Message = "销毁失败！",
                                Type = MsgType.ERROR,
                            };
                            _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                        }
                    }
                    else
                    {
                        AlertMsg alertMsg = new AlertMsg
                        {
                            Message = "未勾选要销毁的数据或勾选的数据库存为0",
                            Type = MsgType.ERROR,
                        };
                        _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                    }
                }
                else
                {
                    AlertMsg alertMsg = new AlertMsg
                    {
                        Message = "没有要操作销毁的数据",
                        Type = MsgType.ERROR,
                    };
                    _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                }
            });
        }
        private void DestoryDialogResult(IDialogResult dialogResult)
        {
            if(dialogResult.Result==ButtonResult.Yes)
            {
                DestoryAction();
            }
        }
        //执行销毁操作
        private void DestoryAction()
        {
            if (csList != null && csList.Count > 0)
            {
                csList.ForEach(it => it.Quantity = 0);
                var f = SqlSugarHelper.Db.UseTran(() =>
                {
                    SqlSugarHelper.Db.Updateable(csList).ExecuteCommand();

                    List<MachineRecord> machines = SqlSugarHelper.Db.Queryable<MachineRecord>()
                    .InnerJoin<ChannelStock>((mr, cs) => mr.DrugId == cs.DrugId)
                     //.Where(mr => mr.DrugId.Contains(csList.Select(it => it.DrugId).ToList()) && mr.Type = 32)
                     .Where(mr => mr.MachineId.Equals(ConfigurationManager.AppSettings["machineId"] ?? "DM1"))
                     .Where(mr => mr.Type == 32)
                     .ToList();
                    SqlSugarHelper.Db.Updateable(machines).ReSetValue(mr =>
                    {
                        mr.IsDestroy = 1;
                    }).ExecuteCommand();
                    return true;
                });
                if (f.Data)
                {

                    RequestData();
                    AlertMsg alertMsg = new AlertMsg
                    {
                        Message = "销毁完成",
                        Type = MsgType.SUCCESS,
                    };
                    _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                }
                if (!f.IsSuccess)
                {
                    AlertMsg alertMsg = new AlertMsg
                    {
                        Message = "销毁失败！",
                        Type = MsgType.ERROR,
                    };
                    _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                }
            }
        }

        private void DoDialogResult(IDialogResult dialogResult)
        {
            // 委托   被动执行     被子窗口执行
            // dialogResult  第一方面可以拿到任意参数   第二方面   可判断关闭状态
            RequestData();
            //MessageBox.Show("返回值：" + dialogResult.Result.ToString());
        }

        public bool KeepAlive => false;


        public DelegateCommand Query
        {
            get => new DelegateCommand(() =>
            {
                RequestData();
            });
        }

        //这个方法用于拦截请求,continuationCallback(true)就是不拦截，continuationCallback(false)拦截本次操作
        public void ConfirmNavigationRequest(NavigationContext navigationContext, Action<bool> continuationCallback)
        {
            continuationCallback(true);
        }


        //接收导航传过来的参数
        public void OnNavigatedTo(NavigationContext navigationContext)
        {
                //查询表格数据
                RequestData();
        }

        void RequestData()
        {

            Channels = SqlSugarHelper.Db.Queryable<ChannelStock>()
                .LeftJoin<DrugInfo>((cs, di) => cs.DrugId == di.DrugId.ToString())
                .Where((cs) => cs.DrawerType != 1 && cs.MachineId.Equals(ConfigurationManager.AppSettings["machineId"] ?? "DM1"))
                .Select((cs, di) => new ChannelStock
                {
                    CanReturnQuantity = SqlFunc.Subqueryable<MachineRecord>().Where(mr => mr.DrugId == cs.DrugId).Where(mr => mr.Type == 2).Where(mr => mr.Status != 2).Select(mr => SqlFunc.IsNull(SqlFunc.AggregateSumNoNull(mr.Quantity - mr.ReturnQuantity1 - mr.ReturnQuantity2), 0)),
                    DrugInfo = new DrugInfo
                    {
                        DrugId = di.DrugId,
                        DrugName = di.DrugName,
                        DrugSpec = di.DrugSpec,
                        Manufactory = di.Manufactory,
                        PackUnit = di.PackUnit,
                    },
                    Quantity = cs.Quantity
                }, true)
                .OrderBy(cs => cs.DrawerNo)
                .OrderBy(cs => cs.ColNo)
                .ToList()
                ;
            _ = Channels.Count;
        }

        //每次导航的时候，该实列用不用重新创建，true是不重新创建,false是重新创建
        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        //这个方法用于拦截请求
        public void OnNavigatedFrom(NavigationContext navigationContext)
        {

        }
    }
}