public string IsTeacherLoggedIn()
{
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
return(db.IsTeacherLogged());
}
}
public override async System.Threading.Tasks.Task OnConnected()
{
var name = Context.User.Identity.Name;
var isTeacher = Context.User.IsInRole("Teacher");
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
await db.HandleUserConnections(Context, name, isTeacher);
var connections = db.GetAllValidConnections();
if (isTeacher)
{
foreach (var c in connections)
{
Clients.Client(c.HubConnectionID).userConnected(new HubUser
{
Name = name,
IsTeacher = true
});
}
}
else
{
foreach (var c in connections)
{
Clients.Client(c.HubConnectionID).userConnected(new HubUser
{
Name = name,
IsTeacher = false
});
}
}
}
await base.OnConnected();
}
public IEnumerable <string> GetConnectedStudents()
{
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
return(db.GetConnectedStudents());
}
}
public void TeacherStopped()
{
Clients.AllExcept(Context.ConnectionId).teacherStoppedExplicitly();
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
db.RemoveAllHubConnections();
}
}
public void CancelControlFromTeacher(string user)
{
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
var con = db.GetStudentHubConnection(user);
if (con != null)
{
Clients.Client(con.HubConnectionID).cancelFromTeacher();
}
}
}
public override async System.Threading.Tasks.Task OnDisconnected(bool stopCalled)
{
try
{
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
await db.UpdateUserConnection(Context.ConnectionId, false);
}
//send out the disconnect
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
var isTeacher = Context.User.IsInRole("Teacher");
var connections = db.GetAllValidConnections();
if (isTeacher)
{
foreach (var c in connections)
{
Clients.Client(c.HubConnectionID).userDisconnected(new HubUser
{
Name = Context.User.Identity.Name,
IsTeacher = true
}, stopCalled);
}
//if (stopCalled)
//{
// db.RemoveAllHubConnections();
//}
}
else
{
foreach (var c in connections)
{
Clients.Client(c.HubConnectionID).userDisconnected(new HubUser
{
Name = Context.User.Identity.Name,
IsTeacher = false
}, stopCalled);
}
}
}
}
catch (Exception e)
{
var msg = e.Message;
throw;
}
await base.OnDisconnected(stopCalled);
}
public override async System.Threading.Tasks.Task OnReconnected()
{
try
{
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
await db.UpdateUserConnection(Context.ConnectionId, true);
}
using (var db = new EDCWebApp.DAL.EDCLoginUserContext())
{
var connections = db.GetAllValidConnections();
var isTeacher = Context.User.IsInRole("Teacher");
if (isTeacher)
{
foreach (var c in connections)
{
Clients.Client(c.HubConnectionID).userReconnected(new HubUser
{
Name = Context.User.Identity.Name,
IsTeacher = true
});
}
}
else
{
foreach (var c in connections)
{
Clients.Client(c.HubConnectionID).userReconnected(new HubUser
{
Name = Context.User.Identity.Name,
IsTeacher = false
});
}
}
}
}
catch (Exception e)
{
var msg = e.Message;
}
await base.OnReconnected();
}
