/// <summary>
/// Deprecated Method for adding a new object to the Users EntitySet. Consider using the .Add method of the associated ObjectSet<T> property instead.
/// </summary>
public void AddToUsers(User user)
{
base.AddObject("Users", user);
}
/// <summary>
/// Create a new User object.
/// </summary>
/// <param name="userId">Initial value of the UserId property.</param>
/// <param name="mSISDN">Initial value of the MSISDN property.</param>
/// <param name="authCodeSHA1">Initial value of the AuthCodeSHA1 property.</param>
public static User CreateUser(global::System.Int32 userId, global::System.String mSISDN, global::System.String authCodeSHA1)
{
User user = new User();
user.UserId = userId;
user.MSISDN = mSISDN;
user.AuthCodeSHA1 = authCodeSHA1;
return user;
}
private void SendMessage(User senderUser, User recipientUser,
MessageType messageType, string msgText)
{
Message msg = new Message();
msg.FromUserId = senderUser.UserId;
msg.ToUserId = recipientUser.UserId;
msg.MsgType = messageType.ToString();
msg.MsgDate = DateTime.Now;
msg.MsgText = msgText;
CryptoChatEntities context = new CryptoChatEntities();
context.Messages.AddObject(msg);
context.SaveChanges();
}
private void DeleteWaitingMessagesAndSessions(User recipientUser)
{
CryptoChatEntities context = new CryptoChatEntities();
// Delete any waiting messages for the user
string deleteMessagesSQL = "DELETE FROM Messages WHERE ToUserId={0}";
context.ExecuteStoreCommand(deleteMessagesSQL,
new object[] { recipientUser.UserId });
// Delete any existing chat sessions associated with the user
string deleteChatSessionsSQL = "DELETE FROM ChatSessions WHERE " +
"FromUserId={0} or ToUserId={0}";
context.ExecuteStoreCommand(deleteChatSessionsSQL,
new object[] { recipientUser.UserId });
}
private void DeleteChatSession(User senderUser, User recipientUser)
{
CryptoChatEntities context = new CryptoChatEntities();
// Delete any existing chat sessions between the users
string deleteChatSessionsSQL = "DELETE FROM ChatSessions WHERE " +
"(FromUserId={0} and ToUserId={1}) or (FromUserId={1} and ToUserId={0})";
context.ExecuteStoreCommand(deleteChatSessionsSQL,
new object[] { senderUser.UserId, recipientUser.UserId });
// Delete any waiting chat messages between the users
string msgTypesToDelete =
"'" + MessageType.MSG_CHALLENGE.ToString() + "'," +
"'" + MessageType.MSG_RESPONSE.ToString() + "'," +
"'" + MessageType.MSG_START_CHAT.ToString() + "'," +
"'" + MessageType.MSG_CANCEL_CHAT.ToString() + "'," +
"'" + MessageType.MSG_CHAT_MESSAGE.ToString() + "'";
string deleteMessagesSQL = "DELETE FROM Messages WHERE " +
"((FromUserId={0} and ToUserId={1}) or (FromUserId={1} and ToUserId={0})) AND " +
"(MsgType in (" + msgTypesToDelete + "))";
context.ExecuteStoreCommand(deleteMessagesSQL,
new object[] { senderUser.UserId, recipientUser.UserId });
}
internal static void SendMessageToAllOnlineUsers(
User senderUser, MessageType msgType, string msgText)
{
DateTime minAllowedLastActivityTime =
DateTime.Now.AddSeconds(-Settings.Default.HttpSessionTimeoutSeconds);
CryptoChatEntities context = new CryptoChatEntities();
var allUserIds =
from u in context.Users
where u.LastActivity >= minAllowedLastActivityTime
select u.UserId;
foreach (var recipientUserId in allUserIds)
{
if (senderUser.UserId != recipientUserId)
{
Message msg = new Message();
msg.FromUserId = senderUser.UserId;
msg.ToUserId = recipientUserId;
msg.MsgType = msgType.ToString();
msg.MsgText = msgText;
msg.MsgDate = DateTime.Now;
context.Messages.AddObject(msg);
}
}
context.SaveChanges();
}
public LoginResponse RegisterNewUser(string msisdn, string authCode)
{
CheckMSISDN(msisdn);
CheckAuthCode(authCode);
LoginResponse loginResult = null;
ExecuteAndHandleExceptions(() =>
{
// Register the user in the DB
CryptoChatEntities context = new CryptoChatEntities();
User user = new User();
user.MSISDN = msisdn.ToLowerInvariant();
user.AuthCodeSHA1 = authCode;
context.Users.AddObject(user);
context.SaveChanges();
// Login the user into the system after the registration
loginResult = LoginUser(msisdn, authCode);
// Send the "user online" notification to all online users
SendMessageToAllOnlineUsers(user,
MessageType.MSG_USER_ONLINE, "New user registered in the system.");
});
return loginResult;
}
