package ProjectStormtrooper;

public abstract class AbstractStrategy {
    private IMoveableObject _moveableObject;
    private Status _state = Status.NotInit;
    protected int FieldWidth;
    protected int FieldHeight;

    public Status GetStatus() {
        return _state;
    }

    public void SetData(IMoveableObject moveableObject, int width, int height) {
        if (moveableObject == null) {
            _state = Status.NotInit;
            return;
        }
        _state = Status.InProgress;
        _moveableObject = moveableObject;
        FieldWidth = width;
        FieldHeight = height;
    }

    public void MakeStep() {
        if (_state != Status.InProgress) {
            return;
        }
        if (IsTargetDestination()) {
            _state = Status.Finish;
            return;
        }
        MoveToTarget();
    }

    protected boolean MoveLeft() {
        return MoveTo(EnumDirectionType.Left);
    }

    protected boolean MoveRight() {
        return MoveTo(EnumDirectionType.Right);
    }

    protected boolean MoveUp() {
        return MoveTo(EnumDirectionType.Up);
    }

    protected boolean MoveDown() {
        return MoveTo(EnumDirectionType.Down);
    }

    protected ObjectParameters GetObjectParameters() {
        if (_moveableObject == null)
            return null;
        return _moveableObject.GetObjectPosition();
    }

    protected Integer GetStep() {
        if (_state != Status.InProgress) {
            return null;
        }
        if (_moveableObject == null)
            return null;
        return _moveableObject.GetStep();
    }

    protected abstract void MoveToTarget();

    protected abstract boolean IsTargetDestination();

    private boolean MoveTo(EnumDirectionType directionType) {
        if (_state != Status.InProgress) {
            return false;
        }
        if (_moveableObject == null)
            return false;
        if (_moveableObject.CheckCanMove(directionType)) {
            _moveableObject.MoveObject(directionType);
            return true;
        }
        return false;
    }
}