Dispenser/DispenserUI/ViewModels/Login/LoginVM.cs

145 lines
3.9 KiB
C#
Raw Normal View History

2024-08-16 07:20:09 +00:00
using System;
using System.Collections.Generic;
using System.Reactive;
using System.Windows.Forms;
using DispenserCommon.Aop;
using DispenserCommon.Ioc;
using DispenserCommon.Utils;
using DispenserCore.Context;
using DispenserCore.Model.DTO;
using DispenserCore.Service;
using ReactiveUI;
using LoginErrorWindow = DispenserUI.Views.Windows.LoginErrorWindow;
namespace DispenserUI.ViewModels.Login;
[Component, GlobalTry]
public class LoginVM : DynamicViewModel
{
private readonly Dictionary<string, int> _errorTimes = new();
private readonly GlobalSessionHolder _sessionHolder = ServiceLocator.GetService<GlobalSessionHolder>();
// 用来记录登录错误告警情况10分钟内异常超过3次则添加到小黑屋里面去
private readonly SlidingWindow _slidingWindow = new(10 * 60 * 1000);
private readonly UserService _userService = ServiceLocator.GetService<UserService>();
private bool _isCapsLockIndicatorVisible;
//订阅IsCapsLockOn、IsPwdTextBoxFocus
private bool _isCapsLockOn;
private bool _isPwdTextBoxFocus;
private string _password;
private bool _showError;
private string _userName;
public LoginVM()
{
Visible = false;
CapsLockUpCommand = ReactiveCommand.Create(CapsLockUp);
PwdTextBoxGotFocusCommand = ReactiveCommand.Create(PwdTextBoxGotFocus);
PwdTextBoxLostFocusCommand = ReactiveCommand.Create(PwdTextBoxLostFocus);
ToLogin = ReactiveCommand.Create(Login);
}
public string UserName
{
get => _userName;
set => this.RaiseAndSetIfChanged(ref _userName, value);
}
public string Password
{
get => _password;
set => this.RaiseAndSetIfChanged(ref _password, value);
}
public bool IsCapsLockIndicatorVisible
{
get => _isCapsLockIndicatorVisible;
set => this.RaiseAndSetIfChanged(ref _isCapsLockIndicatorVisible, value);
}
public bool ShowError
{
get => _showError;
set => this.RaiseAndSetIfChanged(ref _showError, value);
}
public ReactiveCommand<Unit, Unit> CapsLockUpCommand { get; }
public ReactiveCommand<Unit, Unit> PwdTextBoxGotFocusCommand { get; }
public ReactiveCommand<Unit, Unit> PwdTextBoxLostFocusCommand { get; }
public ReactiveCommand<Unit, Unit> ToLogin { get; }
private void CapsLockUp()
{
_isCapsLockOn = Control.IsKeyLocked(Keys.CapsLock);
UpdateCapsLockIndicator();
}
private void PwdTextBoxGotFocus()
{
_isPwdTextBoxFocus = true;
ShowError = false;
UpdateCapsLockIndicator();
}
private void PwdTextBoxLostFocus()
{
_isPwdTextBoxFocus = false;
ShowError = false;
UpdateCapsLockIndicator();
}
private void UpdateCapsLockIndicator()
{
IsCapsLockIndicatorVisible = _isCapsLockOn && _isPwdTextBoxFocus;
}
/// <summary>
/// 登录
/// </summary>
[Operation("用户登录")]
private void Login()
{
try
{
// 如果登录异常次数超过3次则提示用户
if (_slidingWindow.Contains(UserName))
{
WindowUtil.ShowDialog(new LoginErrorWindow());
// 清空当前的错误统计
_errorTimes.Remove(UserName);
return;
}
ShowError = false;
// 进行登录验证
var user = _userService.Login(UserName, Password);
// 将登录结果记录下来
_sessionHolder.SetSession(new Session(user));
}
catch (Exception e)
{
ShowError = true;
_errorTimes.TryGetValue(UserName, out var times);
times += 1;
if (times >= 3)
{
// 添加到小黑屋10分钟内不能进行登录
_slidingWindow.AllowValue(UserName);
return;
}
_errorTimes[UserName] = times;
}
}
}