private TrafficLightRequest ParseRequest(string request)
{
try
{
var trafficLightRequest = new TrafficLightRequest();
foreach (var line in request.Split('\n'))
{
string[] phrases = line.Split(' ');
string url = phrases[1].ToLower();
if(url.IndexOf("flashing=true") != -1)
{
trafficLightRequest.Flashing = true;
}
if (url.IndexOf("solo=true") != -1)
{
trafficLightRequest.Solo = true;
}
if(url.Substring(0,6) == "/green")
trafficLightRequest.Colour = TrafficLightColour.Green;
if (url.Substring(0, 4) == "/red")
trafficLightRequest.Colour = TrafficLightColour.Red;
if (url.Substring(0, 6) == "/amber")
trafficLightRequest.Colour = TrafficLightColour.Amber;
return trafficLightRequest;
}
if(trafficLightRequest.Colour == TrafficLightColour.NotSpecified)
{
throw new InvalidOperationException("Must specify the colour");
}
return trafficLightRequest;
}
catch(Exception ex)
{
throw new NotSupportedException();
}
}
public void SetLed(TrafficLightRequest request)
{
if(request.Solo)
{
green.State = TrafficLightState.Off;
amber.State = TrafficLightState.Off;
red.State = TrafficLightState.Off;
}
if(request.Flashing)
{
switch(request.Colour)
{
case(TrafficLightColour.Green):
green.State = TrafficLightState.Flashing;
break;
case(TrafficLightColour.Amber):
amber.State = TrafficLightState.Flashing;
break;
case(TrafficLightColour.Red):
red.State = TrafficLightState.Flashing;
break;
}
}
else
{
switch (request.Colour)
{
case (TrafficLightColour.Green):
green.State = TrafficLightState.On;
break;
case (TrafficLightColour.Amber):
amber.State = TrafficLightState.On;
break;
case (TrafficLightColour.Red):
red.State = TrafficLightState.On;
break;
}
}
}