public MobileTerminalState UpdateMobileTerminalStateWhenAdmitingNewCallToOngoingSession(IEnumerable <ICall> activeCalls)
{
if (activeCalls == null)
{
throw new VerticalHandoverPredictionException($"{nameof(activeCalls)} is null");
}
if (activeCalls.Count() == 1 || activeCalls.Count() == 0 || activeCalls.Count() > 3)
{
throw new VerticalHandoverPredictionException($"{nameof(activeCalls)} can not have {activeCalls.Count()} calls");
}
var ongoingServices = activeCalls.Select(x => x.Service);
MobileTerminalState state = MobileTerminalState.VoiceDataVideo;
if (activeCalls.Count() == 2)
{
if (ongoingServices.Intersect(new List <Service> {
Service.Voice, Service.Data
}).Count() == ongoingServices.Count())
{
state = MobileTerminalState.VoiceData;
SetState(state);
}
if (ongoingServices.Intersect(new List <Service> {
Service.Voice, Service.Video
}).Count() == ongoingServices.Count())
{
state = MobileTerminalState.VoiceVideo;
SetState(state);
}
if (ongoingServices.Intersect(new List <Service> {
Service.Video, Service.Data
}).Count() == ongoingServices.Count())
{
state = MobileTerminalState.VideoData;
SetState(MobileTerminalState.VideoData);
}
}
else
{
SetState(MobileTerminalState.VoiceDataVideo);
}
return(state);
}
public static IList <Service> SupportedServices(this MobileTerminalState state)
{
var services = new List <Service>();
switch (state)
{
case MobileTerminalState.Idle:
break;
case MobileTerminalState.Data:
services.Add(Service.Data);
break;
case MobileTerminalState.Video:
services.Add(Service.Video);
break;
case MobileTerminalState.Voice:
services.Add(Service.Voice);
break;
case MobileTerminalState.VideoData:
services.Add(Service.Video);
services.Add(Service.Data);
break;
case MobileTerminalState.VoiceData:
services.Add(Service.Data);
services.Add(Service.Voice);
break;
case MobileTerminalState.VoiceVideo:
services.Add(Service.Voice);
services.Add(Service.Video);
break;
case MobileTerminalState.VoiceDataVideo:
services.Add(Service.Data);
services.Add(Service.Voice);
services.Add(Service.Video);
break;
}
return(services);
}
public static MobileTerminalState GetState(this Service service)
{
MobileTerminalState state = default(MobileTerminalState);
switch (service)
{
case Service.Voice:
state = MobileTerminalState.Voice;
break;
case Service.Video:
state = MobileTerminalState.Video;
break;
case Service.Data:
state = MobileTerminalState.Data;
break;
}
return(state);
}
public void SetState(MobileTerminalState state) => State = state;
public void RemoveFromSessionSequence(MobileTerminalState state) => _sessionSequence.Remove(state);
public void AddToSessionSequence(MobileTerminalState state) => _sessionSequence.Add(state);
