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

public abstract class AbstractMap {
    private IDrawingObject _drawingObject = null;
    protected int[][] _map = null;
    protected int _width;
    protected int _height;
    protected float _size_x;
    protected float _size_y;
    protected final Random _random = new Random();
    protected final int _freeRoad = 0;
    protected final int _barrier = 1;

    public Image createMap(int width, int height, IDrawingObject drawingObject) {
        _width = width;
        _height = height;
        _drawingObject = drawingObject;
        do {
            generateMap();
        } while (!setObjectOnMap());
        return drawMapWithObject();
    }

    public Image moveObject(Direction direction) {
        _drawingObject.moveObject(direction);
        if (objectIntersects()) {
            switch (direction) {
                case Left -> _drawingObject.moveObject(Direction.Right);
                case Right -> _drawingObject.moveObject(Direction.Left);
                case Up -> _drawingObject.moveObject(Direction.Down);
                case Down -> _drawingObject.moveObject(Direction.Up);
            }
        }
        return drawMapWithObject();
    }

    private boolean setObjectOnMap() {
        if (_drawingObject == null || _map == null)
        {
            return false;
        }

        for (int i = 2; i < _map.length; i++)
        {
            for (int j = 2; j < _map[i].length; j++)
            {
                _drawingObject.setObject((int) (i * _size_x), (int) (j * _size_y), _width, _height);
                if (!objectIntersects()) return true;
            }
        }

        return true;
    }

    private boolean objectIntersects() {
        float[] location = _drawingObject.getCurrentPosition();
        for (int i = 0; i < _map.length; i++)
        {
            for (int j = 0; j < _map[i].length; j++)
            {
                if (_map[i][j] == _barrier)
                {
                    if (i * _size_x >= location[0] && (i + 1) * _size_x <= location[1] && j * _size_y >= location[2] && (j + 1) * _size_y <= location[3])
                    {
                        return true;
                    }
                }
            }
        }

        return false;
    }

    private Image drawMapWithObject() {
        Image img = new BufferedImage(_width, _height, BufferedImage.TYPE_INT_ARGB);
        if (_drawingObject == null || _map == null) {
            return img;
        }
        Graphics2D g = (Graphics2D) img.getGraphics();
        for (int i = 0; i < _map.length; ++i)
        {
            for (int j = 0; j < _map[i].length; ++j)
            {
                if (_map[i][j] == _freeRoad)
                {
                    drawRoadPart(g, i, j);
                } else if (_map[i][j] == _barrier)
                {
                    drawBarrierPart(g, i, j);
                }
            }
        }
        _drawingObject.drawingObject(g);
        return img;
    }

    protected abstract void generateMap();
    protected abstract void drawRoadPart(Graphics2D g, int i, int j);
    protected abstract void drawBarrierPart(Graphics2D g, int i, int j);
}