6098/Cowain.Bake.UI/Home/ViewModels/LoginViewModel.cs

//using Cowain.Bake.Common.Service;
using Cowain.Bake.BLL;
using Cowain.Bake.Common;
using Cowain.Bake.Common.Enums;
using Cowain.Bake.Common.Interface;
using Prism.Commands;
using Prism.Ioc;
using Prism.Mvvm;
using System;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using Unity;

namespace Cowain.Bake.UI.Home.ViewModels
{
    public class LoginViewModel : BindableBase
    {
        private readonly IUnityContainer _unityContainer;
        //private readonly IRegionManager _regionManager;

        public LoginViewModel(IUnityContainer unityContainer/*, IRegionManager regionManager*/)
        {
            //初始化数据库连接池
            _unityContainer = unityContainer;
            //_regionManager = regionManager;
            //ConfigInfo.InitConfigParm(_unityContainer);
            Global.STOVE_LAYERS = _unityContainer.Resolve<MemoryDataProvider>().AllStation.Find(x => x.Type == (int)EStationType.Stove).Layers;
        }

        private string _userName = "TEST12132";

        public string UserName
        {
            get { return _userName; }
            set { SetProperty<string>(ref _userName, value); }
        }


        private string _password = "123456";

        public string Password
        {
            get { return _password; }
            set { SetProperty<string>(ref _password, value); }
        }

        private string _errorMsg;

        public string ErrorMsg
        {
            get { return _errorMsg; }
            set { SetProperty<string>(ref _errorMsg, value); }
        }


        // 登录命令
        public ICommand LoginCommand
        {
            get => new DelegateCommand<object>(OnLogin);
        }
        public static bool loginFlag = false;
        private async void OnLogin(object obj)
        {
            string msg = "";
            try
            {
                this.ErrorMsg = "" ;
                if (string.IsNullOrEmpty(this.UserName))
                {
                    this.ErrorMsg = "请输入用户名！";
                    return;
                }
                if (string.IsNullOrEmpty(this.Password))
                {
                    this.ErrorMsg = "请输入密码！";
                    return;
                }
                

                var loginTask = Task.Run(() => _unityContainer.Resolve<UserService>().Login(this.UserName, this.Password, out msg));
                var timeouttask = Task.Delay(8000);
                var completedTask = await Task.WhenAny(loginTask, timeouttask);
                if (completedTask == timeouttask)
                {
                    this.ErrorMsg = "连接数据库超时,请联系管理员!";
                }
                else
                {
                    var task = await loginTask;
                    if (task == true && !loginFlag)
                    {
                        loginFlag = true;
                        this.ErrorMsg = "登录成功 . . .";
                        (obj as Window).DialogResult = true;
                    }
                    else if (task == true && loginFlag)//切换用户
                    {
                        _unityContainer.Resolve<ICommonFun>().InitWindows();
                        (obj as Window).DialogResult = true;
                        (obj as Window).Close();
                    }
                    else
                    {
                        if (!string.IsNullOrEmpty(msg))
                        {
                            this.ErrorMsg = msg;
                        }
                        else if (!loginFlag)
                        {
                            this.ErrorMsg = "登录失败,用户名或密码错误. . .";
                        }
                        else
                        {
                            this.ErrorMsg = "切换用户失败,用户名或密码错误. . .";
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                this.ErrorMsg = "登录失败！" + ex.Message;
            }
        }
    }
}