import java.awt.*;
import java.awt.image.BufferedImage;
import java.util.LinkedList;

public class MapWithSetBattleshipsGeneric <T extends IDrawningObject, U extends AbstractMap>{

    /// Ширина окна отрисовки
    private final int _pictureWidth;
    /// Высота окна отрисовки
    private final int _pictureHeight;
    /// Размер занимаемого объектом места (ширина)
    private final int _placeSizeWidth = 210;
    /// Размер занимаемого объектом места (высота)
    private final int _placeSizeHeight = 90;
    public final SetBattleshipGeneric<T> _setBattleship;
    /// Карта
    private final U _map;
    LinkedList<DrawningObjectBattleship> deletedBattleships = new LinkedList<>();
    /// Конструктор
    public MapWithSetBattleshipsGeneric(int picWidth, int picHeight, U map)
    {
        int width = picWidth / _placeSizeWidth;
        int height = picHeight / _placeSizeHeight;
        _setBattleship = new SetBattleshipGeneric<T>(width * height);
        _pictureWidth = picWidth;
        _pictureHeight = picHeight;
        _map = map;
    }
    public int Add(T battleship)
    {
        return this._setBattleship.Insert(battleship);
    }
    public T Subtraction(int position)
    {
        T delObj = this._setBattleship.Remove(position);
        if (delObj == null) return null;
        deletedBattleships.add((DrawningObjectBattleship) delObj);
        return delObj;

    }
    public BufferedImage ShowSet()
    {
        BufferedImage bmp = new BufferedImage(_pictureWidth, _pictureHeight, BufferedImage.TYPE_INT_RGB);
        Graphics gr = bmp.getGraphics();
        DrawBackground((Graphics2D)gr);
        DrawBattleship((Graphics2D)gr);
        return bmp;
    }
    public BufferedImage ShowOnMap()
    {
        Shaking();
        for (int i = 0; i < _setBattleship.Count(); i++)
        {
            var battleship = _setBattleship.Get(i);
            if (battleship != null)
            {
                return _map.CreateMap(_pictureWidth, _pictureHeight, battleship);
            }
        }
        return new BufferedImage(_pictureWidth, _pictureHeight, BufferedImage.TYPE_INT_RGB);
    }

    /// Перемещение объекта по крате
    public BufferedImage MoveObject(Direction direction)
    {
        if (_map != null)
        {
            return _map.MoveObject(direction);
        }
        return new BufferedImage(_pictureWidth, _pictureHeight, BufferedImage.TYPE_INT_RGB);
    }
    private void Shaking()
    {
        int j = _setBattleship.Count() - 1;
        for (int i = 0; i < _setBattleship.Count(); i++)
        {
            if (_setBattleship.Get(i) == null)
            {
                for (; j > i; j--)
                {
                    var battleship = _setBattleship.Get(j);
                    if (battleship != null)
                    {
                        _setBattleship.Insert(battleship, i);
                        _setBattleship.Remove(j);
                        break;
                    }
                }
                if (j <= i)
                {
                    return;
                }
            }
        }
    }
    private void DrawBackground(Graphics2D g)
    {
        g.setColor(Color.blue);
        g.fillRect(0, 0, _pictureWidth, _pictureHeight);
        for (int i = 0; i < _pictureWidth / _placeSizeWidth; i++)
        {

            for (int j = 0; j <= _pictureHeight / _placeSizeHeight; ++j)
            {
                g.setStroke(new BasicStroke(7));
                g.setColor(Color.black);
                g.drawLine(i * _placeSizeWidth, j * _placeSizeHeight, i *
                        _placeSizeWidth + _placeSizeWidth / 2, j * _placeSizeHeight);
                g.setColor(Color.RED);
                g.drawLine(i * _placeSizeWidth + 20, j * _placeSizeHeight-5, i * _placeSizeWidth + 20, j * _placeSizeHeight - 23);
                g.drawLine( i * _placeSizeWidth + 70, j * _placeSizeHeight - 5, i * _placeSizeWidth + 70, j * _placeSizeHeight - 23);
            }

            g.drawLine(i * _placeSizeWidth, 0, i * _placeSizeWidth,
                    (_pictureHeight / _placeSizeHeight) * _placeSizeHeight);


        }
    }
    private void DrawBattleship(Graphics2D g)
    {
        int countColumns = _pictureWidth / _placeSizeWidth - 1;
        int countRows = _pictureHeight / _placeSizeHeight - 1;
        int currentColumn = 0;
        for (int i = 0; i < _setBattleship.Count(); i++)
        {
            if((_setBattleship.Get(i) != null))
            {
                _setBattleship.Get(i).SetObject((currentColumn) * _placeSizeWidth + 10, (countRows) * _placeSizeHeight + 15, _pictureWidth, _pictureHeight);
                _setBattleship.Get(i).DrawningObject(g);
            }
            if (currentColumn >= countColumns)
            {
                currentColumn = 0;
                countRows--;
            }
            else
            {
                currentColumn++;

            }
        }
    }
    public DrawningObjectBattleship GetDeleted() {
        if (deletedBattleships.isEmpty()) return null;
        return deletedBattleships.remove(0);
    }
}