public RecursiveProgram(IIntCodeValidator validator, IIntcodeProgramFactory intcodeProgramFactory)
{
_validator = validator;
_intcodeProgramFactory = intcodeProgramFactory;
_adder = new AdderProgram(_validator);
_multiplier = new MultiplierProgram(_validator);
}
public int ComputeSignal(IList <IntCodeValue> phaseSettings, int[] data)
{
var amplifiers = new IIntCodeProgram[phaseSettings.Count];
var firstInput = new BlockingCollection <IntCodeValue>();
for (var i = 0; i < amplifiers.Length; i++)
{
var input = i == 0 ? firstInput : amplifiers[i - 1].Output;
input.Add(phaseSettings[i]);
if (_feedbackLoop && i == amplifiers.Length - 1)
{
amplifiers[i] = IntCodeProgram.New(input, firstInput);
}
else
{
amplifiers[i] = IntCodeProgram.New(input);
}
}
var tasks = amplifiers.Select(program =>
Task.Factory.StartNew(() => program.Compute(data.ToArray()), TaskCreationOptions.LongRunning));
firstInput.Add(IntCodeValue.FromInt(0));
Task.WhenAll(tasks).Wait(TimeoutMs);
var took = amplifiers.Last().Output.TryTake(out var signal);
if (!took)
{
throw new InvalidOperationException("No output found.");
}
if (amplifiers.Last().Output.Count != 0)
{
throw new InvalidOperationException("There's still output in the last amplifier.");
}
return((int)signal);
}
