public async Task SendCandidate(int roomId, string candidate)
{
// Validation
if (roomId <= 0)
{
await ReturnError("Could not send candidate", "You must specify a room.");
return;
}
if (candidate.IsNullOrWhitespace())
{
await ReturnError("Could not send candidate", "You must specify a candidate.");
return;
}
// Permission
Room room = null;
await Task.Run(() => room = _roomService.GetRoom(roomId));
if (room == null || !RoomPermissionHelper.CanAddMessage(_context.CurrentUser, room))
{
await ReturnError("Could not send candidate", "You do not have permission, the room may have been deleted.");
return;
}
// Notify others in group
await Clients.OthersInGroup(roomId.ToString()).SendAsync("ReceiveCandidate", candidate);
}
public async Task StopBroadcast(int roomId)
{
// Validation
if (roomId <= 0)
{
await ReturnError("Could not stop broadcast", "You must specify a room.");
return;
}
// Permission
Room room = null;
await Task.Run(() => room = _roomService.GetRoom(roomId));
if (room == null || !RoomPermissionHelper.CanAddMessage(_context.CurrentUser, room))
{
await ReturnError("Could not stop broadcast", "You do not have permission, the room may have been deleted.");
return;
}
// Notify all in group
Models.Broadcast hubBroadcast = new Models.Broadcast
{
UserId = _context.CurrentUser.Id,
StreamId = string.Empty
};
await Clients.Group(roomId.ToString()).SendAsync("ReceiveDeleteBroadcast", hubBroadcast);
}
public async Task SendMessage(int roomId, string text)
{
// Validation
if (roomId <= 0)
{
await ReturnError("Could not send message", "You must specify a room.");
return;
}
if (text.IsNullOrWhitespace())
{
await ReturnError("Could not send message", "Text must not be null or whitespace.");
return;
}
// Permission
Room room = null;
await Task.Run(() => room = _roomService.GetRoom(roomId));
if (room == null || !RoomPermissionHelper.CanAddMessage(_context.CurrentUser, room))
{
await ReturnError("Could not send message", "You do not have permission, the room may have been deleted.");
return;
}
// Trim message if necessary
if (text.Length > 2000)
{
text = text.Substring(0, 2000);
}
// Add message to room
int messageId = -1;
await Task.Run(() => messageId = _roomService.AddMessage(_context.CurrentUser, room, text));
// Html encode the text of the message
text = HtmlEncoder.Default.Encode(text);
// Notify all in group
Models.Message hubMessage = new Models.Message
{
Id = messageId,
UserName = _context.CurrentUser.UserName,
UserId = _context.CurrentUser.Id,
Text = text,
IsDeleted = false,
ModifiedId = _context.CurrentUser.Id,
ModifiedUserName = _context.CurrentUser.UserName
};
await Clients.Group(roomId.ToString()).SendAsync("ReceiveMessage", hubMessage);
}
public async Task SendOfferToUser(int roomId, string userId, string offer)
{
// Validation
if (roomId <= 0)
{
await ReturnError("Could not send offer", "You must specify a room.");
return;
}
if (userId.IsNullOrWhitespace())
{
await ReturnError("Could not send offer", "You must specify a user.");
return;
}
if (offer.IsNullOrWhitespace())
{
await ReturnError("Could not send offer", "You must specify an offer.");
return;
}
// Permission
Room room = null;
await Task.Run(() => room = _roomService.GetRoom(roomId));
if (room == null || !RoomPermissionHelper.CanAddMessage(_context.CurrentUser, room))
{
await ReturnError("Could not send offer", "You do not have permission, the room may have been deleted.");
return;
}
// Notify specified user
await Clients.User(userId).SendAsync("ReceiveOffer", offer, _context.CurrentUser.Id);
}
