public override Task OnConnectedAsync()
{
HubUserInfo u = GetHubUser();
if (u == null)
{
HubUserInfo user = new HubUserInfo();
user.full_name = GetIdentityUserFullName().Result;
user.connection_ids.Add(Context.ConnectionId);
user.user_id = Context.UserIdentifier;
_hubUserService.HubUsers.Add(user);
}
else
{
//user exist, just add new connection id to him
u.connection_ids.Add(Context.ConnectionId);
//add this connection_id to all groups that is this user alreday in
foreach (var group_name in u.groups)
{
Groups.AddToGroupAsync(Context.ConnectionId, group_name);
}
}
return(base.OnConnectedAsync());
}
public async Task MessageAll(string message, string group_name)
{
HubUserInfo user = GetHubUser();
if (user.groups.Contains(group_name))
{
await Clients.Group(group_name).SendAsync("NewMessage", user.full_name, message, group_name);
}
}
public async Task LeaveGroup(string group_name)
{
HubUserInfo user = GetHubUser();
//just if it is alreday in that group
if (user.groups.Contains(group_name))
{
user.groups.Remove(group_name);
foreach (var id in user.connection_ids)
{
await Groups.RemoveFromGroupAsync(id, group_name);
}
await Clients.Group(group_name).SendAsync("GroupChange", group_name, user.full_name, "leave");
}
}
public async Task JoinGroup(string group_name)
{
HubUserInfo user = GetHubUser();
//just if alreday not in that group
if (!user.groups.Contains(group_name))
{
user.groups.Add(group_name);
foreach (var id in user.connection_ids)
{
await Groups.AddToGroupAsync(id, group_name);
}
await Clients.Group(group_name).SendAsync("GroupChange", group_name, user.full_name, "join");
}
}
public override Task OnDisconnectedAsync(Exception exception)
{
HubUserInfo user = GetHubUser();
if (user != null)
{
user.connection_ids.Remove(Context.ConnectionId);
if (user.connection_ids.Count() == 0)
{
_hubUserService.HubUsers.Remove(user);
foreach (string group in user.groups)
{
Clients.Group(group).SendAsync("GroupChange", group, user.full_name, "disconected from");
}
}
}
return(base.OnDisconnectedAsync(exception));
}
