/// <summary>
/// 作为注册用户登录
/// </summary>
/// <param name="userDto">用户信息</param>
/// <returns>异步获取Token的任务，发生错误时返回错误信息</returns>
public async Task <(AccessTokenResponseDto, Dictionary <string, string> error)> LoginAsRegisteredUserAsync(UserLoginRequestDto userDto)
{
User user = await _dbContext.User
.FirstOrDefaultAsync(u => u.Username == userDto.Username);
if (user != null &&
ValidatePassword(userDto.Password, user.Salt, user.PasswordHash))
{
AccessTokenResponseDto tokenDto = new AccessTokenResponseDto
{
AccessToken = await _tokenAuthService.GenerateAccessTokenAsync(user),
RefreshToken = await _tokenAuthService.GenerateRefreshTokenAsync(user)
};
return(tokenDto, null);
}
else
{
// 用户名或密码错误
var error = new Dictionary <string, string>
{
["username"] = _msg.GetMessage("E001", "用户名或密码")
};
return(null, error);
}
}
/// <summary>
/// 创建房间
/// </summary>
/// <param name="uid">用户ID</param>
/// <param name="roomDto">用户输入的用于创建房间的信息</param>
/// <returns>表示异步创建房间的任务，如果创建失败则返回错误信息</returns>
public async Task <ChatRoomCreateResponseDto> CreateRoomAsync(int uid, ChatRoomDto roomDto)
{
// 防止用户打开多个窗口创建房间
var error = await ApplyForCreatingRoomAsync(uid);
if (!string.IsNullOrEmpty(error))
{
return(new ChatRoomCreateResponseDto
{
Error = error,
CloseModalIfError = true
});
}
try
{
var room = new ChatRoom
{
OwnerId = uid,
Name = roomDto.Name,
MaxUsers = roomDto.MaxUsers,
IsEncrypted = roomDto.IsEncrypted,
IsPermanent = roomDto.IsPermanent,
IsHidden = roomDto.IsHidden,
AllowGuest = roomDto.AllowGuest
};
// 如果房间被加密
if (roomDto.IsEncrypted)
{
Guid salt = Guid.NewGuid();
room.Salt = salt.ToString();
room.PasswordHash = PasswordHelper.GeneratePasswordHash(roomDto.Password, room.Salt);
}
_dbContext.ChatRoom.Add(room);
await _dbContext.SaveChangesAsync();
return(new ChatRoomCreateResponseDto
{
RoomId = HashidsHelper.Encode(room.Id)
});
}
catch (Exception)
{
// 因为是多线程，任然可能发生异常
// 房间名重复
return(new ChatRoomCreateResponseDto
{
Error = _msg.GetMessage("E003", "房间名"),
CloseModalIfError = false
});
}
}
/// <summary>
/// 验证用户名
/// </summary>
/// <param name="username">用户名</param>
/// <returns>表示异步验证用户名的任务</returns>
public async Task <string> ValidateUsernameAsync(string username)
{
// 用户名仅支持中日英文、数字和下划线,且不能为纯数字
if (!Regex.IsMatch(username, @"^[\u4e00-\u9fa5\u3040-\u309F\u30A0-\u30FFa-zA-Z_\d]+$") ||
Regex.IsMatch(username, @"^\d+$"))
{
return(_msg.GetMessage("E002", "用户名"));
}
// 检测用户名是否存在
int count = await _dbContext
.User.CountAsync(user => user.Username == username);
if (count > 0)
{
return(_msg.GetMessage("E003", "用户名"));
}
return(null);
}
