private async Task <SchedulesResult> _GetSchedules(string subject)
{
if (string.IsNullOrWhiteSpace(_subjectRequested) && _subjectRequested != subject)
{
NetworkComms.RemoveGlobalIncomingPacketHandler($"{SchedulesResult.GetHeader()}{_subjectRequested}");
}
if (string.IsNullOrWhiteSpace(subject))
{
return(null);
}
_subjectRequested = subject;
if (Server == null)
{
await FindServer();
}
if (Server == null)
{
return(null);
}
if (_subjectRequested != subject)
{
return(null);
}
SchedulesResult result = null;
NetworkComms.AppendGlobalIncomingPacketHandler <SchedulesResult>(SchedulesResult.GetHeader() + subject,
(h, c, i) =>
{
NetworkComms.RemoveGlobalIncomingPacketHandler(SchedulesResult.GetHeader() + subject);
result = i;
});
await new SchedulesRequest()
{
SubjectCode = subject, StudentId = CurrentStudent.Id
}
.Send(new IPEndPoint(IPAddress.Parse(Server.IP), Server.Port));
var start = DateTime.Now;
while ((DateTime.Now - start).TotalSeconds < 17)
{
if (result != null)
{
return(result);
}
await Task.Delay(TimeSpan.FromSeconds(1));
}
Server = null;
NetworkComms.RemoveGlobalIncomingPacketHandler(SchedulesResult.GetHeader() + subject);
return(null);
}
public static void ScheduleRequestHandler(PacketHeader packetheader, Connection con, SchedulesRequest incomingobject)
{
var dev = AndroidDevice.Cache.FirstOrDefault(
d => d.IP == ((IPEndPoint)con.ConnectionInfo.RemoteEndPoint).Address.ToString());
//Maybe do not ignore this on production
if (dev == null)
{
return;
}
var result = new SchedulesResult()
{
Serial = incomingobject.Serial, Subject = incomingobject.SubjectCode
};
var student = Models.Student.Cache.FirstOrDefault(x => x.Id == incomingobject.StudentId);
var subject = Models.Subject.Cache
.FirstOrDefault(x => x.Code.ToLower() == incomingobject.SubjectCode.ToLower());
if (student == null || subject == null)
{
result.Success = false;
result.ErrorMessage = $"{incomingobject.SubjectCode.ToUpper()} not found!";
}
else
{
if (!(Models.CourseSubject.Cache
.Any(x => x.CourseId == student?.CourseId &&
x.SubjectId == subject.Id)))
{
result.Success = false;
result.ErrorMessage = $"{incomingobject.SubjectCode.ToUpper()} is not in your course.";
}
else
{
var schedules = Models.ClassSchedule.Cache.Where(x => x.Subject.Code == subject.Code);
result.Success = true;
result.Schedules = new List <ClassSchedule>();
foreach (var sched in schedules)
{
result.Schedules.Add(new ClassSchedule()
{
ClassId = sched.Id,
Instructor = sched.Instructor,
Schedule = sched.Description,
SubjectCode = sched.Subject.Code,
Room = sched.Room,
Slots = sched.Slots,
Enrolled = GetEnrolled(sched.Id)
});
}
}
}
result.Send(new IPEndPoint(IPAddress.Parse(dev.IP), dev.Port));
}