public void CreateUser(string username, string nickname, string authCode)
{
ValidateUsername(username);
ValidateNickname(nickname);
ValidateAuthCode(authCode);
using (ChessEntities context = new ChessEntities())
{
var usernameToLower = username.ToLower();
var nicknameToLower = nickname.ToLower();
var dbUser = context.Users.FirstOrDefault(u => u.Name == usernameToLower || u.Nickname.ToLower() == nicknameToLower);
if (dbUser != null)
{
if (dbUser.Name.ToLower() == usernameToLower)
{
throw new InvalidOperationException("Username already exists");
}
else
{
throw new InvalidOperationException("Nickname already exists");
}
}
dbUser = new User()
{
Name = usernameToLower,
Nickname = nickname,
AuthCode = authCode
};
context.Users.Add(dbUser);
context.SaveChanges();
}
}
public int LoginUser(string sessionKey)
{
ValidateSessionKey(sessionKey);
var context = new ChessEntities();
using (context)
{
var user = context.Users.FirstOrDefault(u => u.SessionKey == sessionKey);
if (user == null)
{
throw new InvalidOperationException("Invalid user authentication");
}
return((int)user.Id);
}
}
public static IEnumerable <UserModel> GetAllUsers()
{
var context = new ChessEntities();
using (context)
{
var users =
(from user in context.Users
select new UserModel()
{
Id = (int)user.Id,
Nickname = user.Nickname
});
return(users.ToList());
}
}
public void LogoutUser(string sessionKey)
{
ValidateSessionKey(sessionKey);
var context = new ChessEntities();
using (context)
{
var user = context.Users.FirstOrDefault(u => u.SessionKey == sessionKey);
if (user == null)
{
throw new InvalidOperationException("Invalid user authentication");
}
user.SessionKey = null;
context.SaveChanges();
}
}
public string LoginUser(string username, string authCode, out string nickname)
{
ValidateUsername(username);
ValidateAuthCode(authCode);
var context = new ChessEntities();
using (context)
{
var usernameToLower = username.ToLower();
var user = context.Users.FirstOrDefault(u => u.Name == usernameToLower && u.AuthCode == authCode);
if (user == null)
{
throw new InvalidOperationException("Invalid username or password");
}
var sessionKey = GenerateSessionKey((int)user.Id);
user.SessionKey = sessionKey;
nickname = user.Nickname;
context.SaveChanges();
return(sessionKey);
}
}
