public JoinChatRoomResult JoinChatRoom(string chatRoomId, string href)
{
if (href != null)
{
HttpContext.Current.Items["href"] = href;
}
var result = new JoinChatRoomResult
{
FileTransferEnabled = chatSettingsProvider.EnableFileTransfer,
VideoChatEnabled = chatSettingsProvider.EnableVideoChat,
FlashMediaServer = chatSettingsProvider.FlashMediaServer
};
User user;
try
{
user = chatUserProvider.GetCurrentlyLoggedUser();
}
catch (System.Security.SecurityException err)
{
result.Error = err.Message;
return(result);
}
if (user == null)
{
string loginUrl = chatUserProvider.GetLoginUrl(href);
result.Error = "You need to login in order to use the chat!";
if (loginUrl != null)
{
result.Error += " Redirecting to login page...";
result.RedirectUrl = loginUrl;
}
return(result);
}
Room room = chatRoomProvider.GetChatRoom(chatRoomId);
if (room == null)
{
result.Error = "The specified chat room does not exist!";
return(result);
}
#region Messenger
var url = (new Uri(href));
var queryKeyValues = HttpUtility.ParseQueryString(url.Query);
var isInitiator = queryKeyValues["init"];
var targetUserId = queryKeyValues["target"];
bool alreadyConnected = href.IndexOf('#') == -1 ? false : (href.Substring(href.IndexOf('#')) == "#connected");
#endregion
string reason;
//if messenger
if (room.Id == "-2")
{
//check chat access only for the initiators
if (isInitiator == "1" && !chatRoomProvider.HasChatAccess(user.Id, room.Id, out reason))
{
if (String.IsNullOrEmpty(reason))
{
result.Error = "You don't have access to the messenger.";
}
else
{
result.Error = reason;
}
return(result);
}
}
else
{
if (!chatRoomProvider.HasChatAccess(user.Id, room.Id, out reason))
{
if (String.IsNullOrEmpty(reason))
{
result.Error = String.Format("You don't have access to chat room '{0}'.", room.Name);
}
else
{
result.Error = reason;
}
return(result);
}
}
// Ignore max users limit for messengerRoom (roomId = -2)
if (room.Id != "-2" && chatRoomStorage.GetUsersInRoom(room.Id).Length >= room.MaxUsers)
{
result.Error = String.Format("The chat room '{0}' is full. Please try again later.", room.Name);
return(result);
}
chatRoomStorage.AddUserToRoom(room.Id, user.Id);
chatRoomStorage.AddMessage(room.Id, new Message
{
Content =
string.Format("User {0} has joined the chat.",
user.DisplayName),
FromUserId = user.Id,
ToUserId = String.IsNullOrEmpty(targetUserId) ? null : targetUserId,
MessageType = MessageTypeEnum.UserJoined,
Timestamp = Miscellaneous.GetTimestamp()
});
#region Messenger
//delete all messages when starting messenger (not reloading it)
if (isInitiator != null && !alreadyConnected)
{
chatRoomStorage.DeleteAllMessagesFor(room.Id, user.Id);
}
if (!alreadyConnected && isInitiator == "1" && !String.IsNullOrWhiteSpace(targetUserId))
{
try
{
var targetUser = chatUserProvider.GetUser(targetUserId);
//Not sure that MessengerUrl should be constructed here?! timestamp and hash are tied to
//the implementation
var timestamp = DateTime.Now.ToFileTimeUtc();
var hash = Miscellaneous.CalculateChatAuthHash(targetUserId, user.Id, timestamp.ToString());
var request = new ChatRequest
{
FromThumbnailUrl = user.ThumbnailUrl,
FromProfileUrl = user.ProfileUrl,
FromUserId = user.Id,
FromUsername = user.DisplayName,
ToUserId = targetUserId,
ToUsername = targetUser.DisplayName,
MessengerUrl =
String.Format("{0}?init=0&id={1}&target={2}×tamp={3}&hash={4}",
url.GetLeftPart(UriPartial.Path), targetUserId, user.Id,
timestamp, hash)
};
messengerProvider.AddChatRequest(request);
}
catch (System.Security.SecurityException) { }
}
#endregion
result.ChatRoomName = room.Name;
result.ChatRoomTopic = room.Topic;
result.Users = chatRoomStorage.GetUsersInRoom(room.Id).Select(chatUserProvider.GetUser).ToArray();
result.Token = chatRoomStorage.GenerateUserToken(user.Id);
result.UserId = user.Id;
result.IsAdmin = chatUserProvider.IsChatAdmin(user.Id, room.Id);
StopVideoBroadcast(user.Id, room.Id);
result.Broadcasts = chatRoomStorage.GetBroadcasts(room.Id, user.Id);
return(result);
}
