private async Task <AddScheduleResult> _AddSchedule(ClassSchedule schedule)
{
if (CurrentStudent == null)
{
return(null);
}
if (Server == null)
{
await FindServer();
}
if (Server == null)
{
return(null);
}
AddScheduleResult result = null;
NetworkComms.AppendGlobalIncomingPacketHandler <AddScheduleResult>(AddScheduleResult.GetHeader(),
(h, c, i) =>
{
NetworkComms.RemoveGlobalIncomingPacketHandler(AddScheduleResult.GetHeader());
result = i;
});
await new AddSchedule()
{
ClassId = schedule.ClassId,
StudentId = CurrentStudent.StudentId,
TransactionId = TransactionId
}.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(AddScheduleResult.GetHeader());
return(null);
}
public static async void AddScheduleHandler(PacketHeader packetheader, Connection connection, AddSchedule req)
{
var dev = AndroidDevice.Cache.FirstOrDefault(
d => d.IP == ((IPEndPoint)connection.ConnectionInfo.RemoteEndPoint).Address.ToString());
//Maybe do not ignore this on production
if (dev == null)
{
return;
}
var request = Models.Request.Cache.FirstOrDefault(x => x.Id == req.TransactionId);
var sched = Models.ClassSchedule.Cache.FirstOrDefault(x => x.Id == req.ClassId);
if ((request == null) || (request.StudentId != req.StudentId) || sched == null)
{
await new AddScheduleResult()
{
Success = false,
ErrorMessage = "Invalid request"
}.Send(new IPEndPoint(IPAddress.Parse(dev.IP), dev.Port));
return;
}
var prevSched = request.Details.FirstOrDefault(x =>
{
return(x.Schedule.SubjectId == sched.SubjectId && x.ScheduleId != req.ClassId);
});
var result = new AddScheduleResult()
{
Success = true,
ReplacedId = prevSched?.Id ?? 0,
};
prevSched?.Delete();
new RequestDetail()
{
RequestId = req.TransactionId,
ScheduleId = req.ClassId,
}.Save();
await result.Send(new IPEndPoint(IPAddress.Parse(dev.IP), dev.Port));
}