ShakerControl/ShakerManger/ViewModel/LoginViewModel.cs

using HandyControl.Interactivity.Commands;
using Shaker.Model;
using Shaker.ViewModel;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;

namespace ShakerManger.ViewModel
{
    internal class LoginViewModel : DisplayViewModel<Shaker.Model.UserModel>
    {
        private LoginViewModel()
        {

        }
        static LoginViewModel()
        {
        }
        public static LoginViewModel Default { get; } = new LoginViewModel();
        private string passWord = string.Empty;
        private string message = string.Empty;
        private bool isLoggedIn = false;
        private bool isAnonymous = false;

        public string UserName 
        { 
            get => Model.UserName;
            set
            {
                UpdateProperty(ref Model.UserName, value);
                Message = string.Empty;
            }
        }
        public string PassWord
        {
            get => passWord;
            set
            {
                UpdateProperty(ref passWord, value);
                Model.PassWord = Shaker.Model.GlobalVariable.MD5Encrypt32(value);
                Message = string.Empty;
            }
        }
        public UserType UserType { get => Model.UserType; set => UpdateProperty(ref Model.UserType, value); }
        public ICommand LoginCommand => new DelegateCommand(Login);
        private void Login()
        {
            if(string.IsNullOrEmpty(UserName))
            {
                Message = "请输入用户名";
                return;
            }
            if(string.IsNullOrEmpty(PassWord))
            {
                Message = "请输入密码";
                return;
            }
            var user = Sql.Default.FindFirst<UserModel>(u => u.UserName == Model.UserName && u.PassWord == Model.PassWord);
            if(user == null)
            {
                Message = "用户名或密码错误";
                return;
            }
            else
            {
                if (user.UserType == UserType.ClientUser)
                {
                    Message = "您没有权限登录";
                    return;
                }
                else if (user.UserType == UserType.SystemUser || user.UserType == UserType.SystemAdministrator)
                {
                    UpDateModel(user);
                    MainWindowViewModel.Default.LogManger.AddLog("用户登录");
                    IsLoggedIn = true;
                    IsAnonymous = false;
                    return;
                }
                else
                {
                    Message = "用户类型错误";
                }
            }
        }
        public bool IsAnonymous { get => isAnonymous; set =>UpdateProperty(ref isAnonymous , value); }
        public bool IsLoggedIn { get => isLoggedIn; set =>UpdateProperty(ref isLoggedIn, value); }
        public string Message { get => message; set =>UpdateProperty(ref message, value); }
        public override Type View { get; } = typeof(View.LoginView);
        public ICommand AnonymousLoginCommand => new DelegateCommand(() =>
        {
            IsLoggedIn = true;
            IsAnonymous = true;
            MainWindowViewModel.Default.LogManger.AddLog("匿名用户登录");
        });
    }
}