import java.util.Random;

public class DrawingEntities <T extends EntityPlane, U extends IAdditionalDrawingObject>
{
    public EntityPlane[] _arrPlane;
    public IAdditionalDrawingObject[] _arrWindow;
    int countArrPlane = 0;
    int countArrWindows = 0;
    String _x_index;
    String _y_index;

    //конструктор
    public DrawingEntities(int sizeArrPlane, int sizeArrAddElem)
    {
        _arrPlane = new EntityPlane[sizeArrPlane];
        _arrWindow = new IAdditionalDrawingObject[sizeArrAddElem];
    }

    //добавить сущность-самолёт
    public int Insert(T plane)
    {
        if(countArrPlane < _arrPlane.length)
        {
            _arrPlane[countArrPlane] = plane;
            countArrPlane++;

            return countArrPlane - 1;
        }

        return -1;
    }

    //добавить кол-во и тип иллюминаторов
    public int Insert(U addElement)
    {
        if(countArrWindows < _arrWindow.length)
        {
            _arrWindow[countArrWindows] = addElement;
            countArrWindows++;

            return countArrWindows - 1;
        }

        return -1;
    }

    //фиксирование индексов
    public void SetIndex(int indexFirst, int indexSecond)
    {
        _x_index = Integer.toString(indexFirst);
        _y_index = Integer.toString(indexSecond);
    }

    public DrawingPlane CreatePlane()
    {
        Random rnd = new Random();
        int indexPlane = 0;
        int indexArrWindow = 0;

        if(countArrPlane - 1 != 0 && countArrWindows - 1 != 0)
        {
            indexPlane = rnd.nextInt(0, countArrPlane - 1);
            indexArrWindow = rnd.nextInt(0, countArrWindows - 1);
        }

        T plane = (T)_arrPlane[indexPlane];
        U windows = (U)_arrWindow[indexArrWindow];

        SetIndex(indexPlane, indexArrWindow);

        if(plane instanceof EntityAirbus)
        {
            return new DrawingAirbus(plane, windows);
        }

        return new DrawingPlane(plane, windows);
    }
}