public Input Provide(string arg)
{
arg = arg?.Trim() ?? string.Empty;
if (!_fileProcessor.Exists(arg))
{
throw new FileNotFoundException(arg);
}
var input = new Input();
_streamReader.TargetFile(arg);
if (_streamReader.EndOfStream())
{
throw new InputNotValidException("File should not be empty");
}
string surfaceParameter = _streamReader.ReadLine();
input.SurfaceParameter = surfaceParameter.Trim();
while (!_streamReader.EndOfStream())
{
string vehicleParameter = _streamReader.ReadLine()?.Trim();
if (string.IsNullOrEmpty(vehicleParameter))
{
break;
}
if (_streamReader.EndOfStream())
{
throw new InputNotValidException("Each vehicle should contains at least one move command");
}
string moveCommandsParameter = _streamReader.ReadLine()?.Trim();
if (string.IsNullOrEmpty(moveCommandsParameter))
{
throw new InputNotValidException("Each vehicle should contains at least one move command");
}
var vehicleAndMoveCommandsPair = new Tuple <string, string>(vehicleParameter, moveCommandsParameter);
input.VehicleAndCommandsParameterList.Add(vehicleAndMoveCommandsPair);
}
return(input);
}