public object CreateContext(string otherUserName)
{
var otherUser = entities.Users.FirstOrDefault(u => u.UserName == otherUserName);
if (otherUser.UserName == Context.User.Identity.Name)
{
throw new HttpException("Can't create a context with yourself.");
}
var chatContext = new ChatContext()
{
InitiatorId = Context.User.Identity.GetUserId(),
OtherUser = otherUser,
LastInteraction = DateTime.Now
};
entities.ChatContexts.Add(chatContext);
entities.SaveChanges();
var viewModel = new
{
Id = chatContext.Id,
OtherUser = new UserProfileBasicViewModel(otherUser)
{
UserId = otherUser.Id
}
};
SendNewContextToConnectedClients(chatContext);
return Serialize(viewModel);
}
private void SendMessageToConnectedClients(ChatContext chatContext, object messageViewModel)
{
var otherUserConnections = GetOtherUser(chatContext)
.SignalRConnections.Select(c => c.ConnectionId);
foreach (var connectionId in otherUserConnections)
{
Clients.Client(connectionId).newMessage(messageViewModel);
}
}
private void SendNewContextToConnectedClients(ChatContext context)
{
var otherUser = GetOtherUser(context);
var currentUser = GetCurrentUser();
var viewModel = new
{
Id = context.Id,
OtherUser = new UserProfileBasicViewModel(currentUser)
{
UserId = otherUser.Id
}
};
var otherUserConnections = otherUser.SignalRConnections.Select(c => c.ConnectionId);
foreach (var connectionId in otherUserConnections)
{
Clients.Client(connectionId).newContext(viewModel);
}
}
private ApplicationUser GetOtherUser(ChatContext context)
{
if (context.Initiator == null)
{
context.Initiator = entities.Users
.FirstOrDefault(u => u.Id == context.InitiatorId);
}
var otherUser = context.Initiator
.Id != Context.User.Identity.GetUserId() ?
context.Initiator : context.OtherUser;
return otherUser;
}