private void Apply(RobotRotated evt)
{
var robot = GetRobot(evt.Name).Value.UpdateCompassPoint(
EnumEx.MapByStringValue <Contracts.CompassPoint, CompassPoint>(evt.CompassPoint));
_robots[evt.Name] = robot;
}
public void RotateRobot(Rotation rotation, string name)
{
var maybeRobot = GetRobot(name);
if (maybeRobot.IsNone)
{
throw new ApplicationException($"Robot {name} does not exist");
}
var robot = maybeRobot.Value;
var compassPointInt = Pattern.Match <Rotation, int>(rotation)
.When(r => r == Rotation.Right, () => (int)robot.CompassPoint + 1)
.When(r => r == Rotation.Left, () => (int)robot.CompassPoint - 1)
.Result;
var newCompassPoint = Pattern.Match <int, CompassPoint>(compassPointInt)
.When(i => i == -1, () => CompassPoint.West)
.Otherwise.Default(() => (CompassPoint)(compassPointInt % 4));
var evt = new RobotRotated(Id, Version,
EnumEx.MapByStringValue <CompassPoint, Contracts.CompassPoint>(newCompassPoint), name);
RaiseDomainEvent(evt);
}