SmartDoorLock/LogForceTestApp.Modules.MainModule/ViewModels/LoginPageViewModel.cs

using HandyControl.Controls;
using LogoForceTestApp.Core;
using LogoForceTestApp.Core.Mvvm;
using LogoForceTestApp.Modules.MainModule.Models;
using LogoForceTestApp.Modules.MainModule.Views;
using Prism.Commands;
using Prism.Events;
using Prism.Regions;
using System;
using System.Collections.Generic;

namespace LogoForceTestApp.Modules.MainModule.ViewModels
{
    public class LoginPageViewModel : RegionViewModelBase
    {
        public string Password { get; set; }
        public List<Role> Roles { get; set; }
        public DelegateCommand GoBackCommand { get; set; }
        public DelegateCommand LoginCommand { get; set; }
        public Role UserRole { get; set; }
        public LoginPageViewModel(IRegionManager regionManager,IEventAggregator eventAggregator) : base(regionManager)
        {
            Roles = new List<Role>();
            foreach (Role item in Enum.GetValues(typeof(Role)))
            {
                Roles.Add(item);
            }
            GoBackCommand = new DelegateCommand(GoBack);
            LoginCommand = new DelegateCommand(Login);
            _eventAggregator = eventAggregator;
        }

        private void Login()
        {
            if (string.IsNullOrWhiteSpace(Password))
            {
                Growl.Warning($"{nameof(Password)}不能为空");
            }
            if (Password == "123456")
            {
                CurrentUser.CurrentUserName = UserRole.ToString();
                Growl.Info($"{UserRole}登录成功");

                _eventAggregator.GetEvent<LoginSuccessEvent>().Publish(true);
                if (CurrentUser.CurrentUserName == "Admin")//(CurrentUser.CurrentUserName== "Engineer" || CurrentUser.CurrentUserName=="Admin")
                {
                    GoBack();
                }
                else
                {
                    RegionManager.RequestNavigate(RegionNames.ContentRegion, nameof(MainPage));
                }

            }
            else
            {
                Growl.Warning($"{UserRole}登录失败:密码错误");
                CurrentUser.CurrentUserName = string.Empty;
                _eventAggregator.GetEvent<LoginSuccessEvent>().Publish(false);
            }
        }

        private IRegionNavigationJournal _regionNavigationJournal;
        private readonly IEventAggregator _eventAggregator;

        private void GoBack()
        {
            _regionNavigationJournal?.GoBack();
        }
        public override void OnNavigatedFrom(NavigationContext navigationContext)
        {
            base.OnNavigatedFrom(navigationContext);
        }
        public override void OnNavigatedTo(NavigationContext navigationContext)
        {
            _regionNavigationJournal = navigationContext.NavigationService.Journal;
        }
    }
}