import javax.swing.*;
import java.awt.*;
import java.util.*;

public class DrawingShip extends JPanel {
    private EntityWarmlyShip warmlyShip; //Класс-сущность
    public EntityWarmlyShip GetWarmlyShip(){return warmlyShip;}
    public float _startPosX; //Координаты отрисовки по оси x
    public float _startPosY; //Координаты отрисовки по оси y
    private Integer _pictureWidth = null; //Ширина окна
    private Integer _pictureHeight = null; //Высота окна
    private final int _warmlyShipWidth = 125; //Ширина отрисовки корабля
    private final int _warmlyShipHeight = 50; //Высота отрисовки корабля

    private int deckCount = 1;
    private DrawDeck dd = new DrawDeck();

    //Инициализация
    public void Init(int speed, float weight, Color bodyColor)
    {
        warmlyShip = new EntityWarmlyShip();
        warmlyShip.Init(speed, weight, bodyColor);
        Random random = new Random();
        dd.SetDeckCount(random.nextInt(1, 4));
    }

    //Начальные коордитанты
    public void SetPosition(int x, int y, int width, int height)
    {
        if (width < _warmlyShipWidth || height < _warmlyShipHeight) return;
        Random random = new Random();
        _startPosX = x < 0 || x + _warmlyShipWidth > width ? random.nextFloat(0, width - _warmlyShipWidth) : x;
        _startPosY = y < 0 || y + _warmlyShipHeight > height ? random.nextFloat(0, height - _warmlyShipHeight) : y;
        _pictureWidth = width;
        _pictureHeight = height;
    }

    //Движение транспорта по координатам
    public void MoveTransport(Direction direction)
    {
        if (_pictureWidth == null || _pictureHeight == null) return;
        switch (direction)
        {
            case Left: //Влево
                if (_startPosX - warmlyShip.GetStep() > 0) _startPosX -= warmlyShip.GetStep();
                break;
            case Up: //Вверх
                if (_startPosY - warmlyShip.GetStep() > 0) _startPosY -= warmlyShip.GetStep();
                break;
            case Right: //Вправо
                if (_startPosX + _warmlyShipWidth + warmlyShip.GetStep() < _pictureWidth) _startPosX += warmlyShip.GetStep();
                break;
            case Down: //Вниз
                if (_startPosY + _warmlyShipHeight + warmlyShip.GetStep() < _pictureHeight) _startPosY += warmlyShip.GetStep();
                break;
        }
    }

    //Отрисовка транспорта
    public void DrawTransport()
    {
        if (_startPosX < 0 || _startPosY < 0 || _pictureWidth == null || _pictureHeight == null)
        {
            return;
        }
        repaint();
    }

    @Override
    public void paintComponent(Graphics g){
        if (GetWarmlyShip() == null) return;

        if (_startPosX < 0 || _startPosY < 0 || _pictureWidth == null || _pictureHeight == null)
        {
            return;
        }
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setColor(warmlyShip.GetBodyColor());
        int[] xPol = new int[] {(int)(_startPosX), (int)(_startPosX + _warmlyShipWidth), (int)(_startPosX + _warmlyShipWidth - 25), (int)(_startPosX + 25)};
        int[] yPol = new int[] {(int)(_startPosY + 20), (int)(_startPosY + 20), (int)(_startPosY + _warmlyShipHeight), (int)(_startPosY + _warmlyShipHeight)};
        g2d.fillPolygon(new Polygon(xPol, yPol, xPol.length));
        g2d.fillRect((int)(_startPosX + _warmlyShipWidth / 5), (int)_startPosY, _warmlyShipWidth * 3 / 5, 20);
        g2d.setColor(Color.CYAN);
        g2d.fillOval((int)(_startPosX + _warmlyShipWidth / 5), (int)_startPosY + 25, 20, 20);
        g2d.fillOval((int)(_startPosX + _warmlyShipWidth * 3 / 5 + 5), (int)_startPosY + 25, 20, 20);
        g2d.fillOval((int)(_startPosX + _warmlyShipWidth * 2 / 5 + 2.5f), (int)_startPosY + 25, 20, 20);
        g2d.setColor(Color.BLACK);
        g2d.drawPolygon(new Polygon(xPol, yPol, xPol.length));
        g2d.drawRect((int)(_startPosX + _warmlyShipWidth / 5), (int)(_startPosY), _warmlyShipWidth * 3 / 5, 20);
        g2d.setColor(Color.BLUE);
        g2d.drawOval((int)(_startPosX + _warmlyShipWidth / 5), (int)_startPosY + 25, 20, 20);
        g2d.drawOval((int)(_startPosX + _warmlyShipWidth * 3 / 5 + 5), (int)_startPosY + 25, 20, 20);
        g2d.drawOval((int)(_startPosX + _warmlyShipWidth * 2 / 5 + 2.5f), (int)_startPosY + 25, 20, 20);
        dd.DrawningDeck(_startPosX, _startPosY, _warmlyShipWidth, g2d, warmlyShip.GetBodyColor());
    }

    //Изменение границ отрисовки
    public void ChangeBorders(int width, int height)
    {
        _pictureWidth = width;
        _pictureHeight = height;
        if (_pictureWidth <= _warmlyShipWidth || _pictureHeight <= _warmlyShipHeight)
        {
            _pictureWidth = null;
            _pictureHeight = null;
            return;
        }
        if (_startPosX + _warmlyShipWidth > _pictureWidth)
        {
            _startPosX = _pictureWidth - _warmlyShipWidth;
        }
        if (_startPosY + _warmlyShipHeight > _pictureHeight)
        {
            _startPosY = _pictureHeight - _warmlyShipHeight;
        }

    }
}