using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ContainerShip.MovementStrategy;

namespace ContainerShip.MovementStrategy
{
    internal class MoveToBorder : AbstractStrategy
    {
        protected override bool IsTargetDestinaion()
        {

            if (GetObjectParameters == null)
            {
                return false;
            }
            return GetObjectParameters.RightBorder <= FieldWidth &&
            GetObjectParameters.RightBorder + GetStep() >= FieldWidth &&
            GetObjectParameters.DownBorder <= FieldHeight &&
            GetObjectParameters.DownBorder + GetStep() >= FieldHeight;
        }
        protected override void MoveToTarget()
        {
            if (GetObjectParameters == null)
            {
                return;
            }
            if (Math.Abs(GetObjectParameters.ObjectMiddleHorizontal - FieldWidth) > GetStep())
            {
                if (GetObjectParameters.ObjectMiddleHorizontal - FieldWidth > 0)
                {
                    MoveLeft();
                }
                else
                {
                    MoveRight();
                }

            }
            if (Math.Abs(GetObjectParameters.ObjectMiddleVertical - FieldHeight) > GetStep())
            {
                if (GetObjectParameters.ObjectMiddleVertical - FieldHeight > 0)
                {
                    MoveUp();
                }
                else
                {
                    MoveDown();
                }
            }
        }
    }
}