using ProjectCruiser.Entities;
namespace ProjectCruiser.DrawningSamples;
public class DrawningBase
{
    // Класс-сущность
    public EntityBase? EntityTransport { get; protected set; }
    private int? _pictureWidth; // Ширина окна
    private int? _pictureHeight; // Высота окна

    protected int? _startPosX; // < protected
    protected int? _startPosY; // < protected

    private readonly int _drawningWidth = 302; // Ширина прорисовки автомобиля
    private readonly int _drawningHeight = 42; // Высота прорисовки автомобиля

    // Инициализация свойств (теперь через конструктор)
    public DrawningBase(EntityBase ship) : this()
    {
        EntityTransport = ship;
    }

    private DrawningBase()
    {
        _pictureWidth = null;
        _pictureHeight = null;
        _startPosX = null;
        _startPosY = null;
    }

    // protected >
    protected DrawningBase(int drawningCarWidth, int drawningCarHeight) : this()
    {
        _drawningWidth = drawningCarWidth;
        _pictureHeight = drawningCarHeight;
    }

    public int getHeight() // для создания объекта в нижнем левом углу (*)
    {
        return _drawningHeight;
    }

    // Установка границ поля
    public bool SetPictureSize(int w, int h)
    {
        if (w < _drawningWidth || h < _drawningHeight)
            // canvas always bigger then obj to fit it
        {
            return false;
        }

        _pictureWidth = w;
        _pictureHeight = h;

        if (_startPosX != null || _startPosY != null)
        {
            SetPosition(_startPosX.Value, _startPosY.Value);
        }

        return true;
    }

    public void SetPosition(int x, int y)
    {
        if (!_pictureHeight.HasValue || !_pictureWidth.HasValue)
        {
            return;
        }

        if (x > _pictureWidth - _drawningWidth) _startPosX =
                _pictureWidth - _drawningWidth;
        else if (x < 0) _startPosX = 0;
        else _startPosX = x;

        if (y > _pictureHeight - _drawningHeight) _startPosY =
                _pictureHeight.Value - _drawningHeight;
        else if (y < 0) _startPosY = 0;
        else _startPosY = y;
    }

    public bool MoveTransport(DirectionType direction)
    {
        if (EntityTransport == null || !_startPosX.HasValue || !_startPosY.HasValue)
        {
            return false;
        }

        switch (direction)
        {
            //влево
            case DirectionType.Left:
                if (_startPosX.Value - EntityTransport.Step > 0)
                {
                    _startPosX -= (int)EntityTransport.Step;
                }
                return true;
            //вверх
            case DirectionType.Up:
                if (_startPosY.Value - EntityTransport.Step > 0)
                {
                    _startPosY -= (int)EntityTransport.Step;
                }
                return true;
            // вправо
            case DirectionType.Right:
                if (_startPosX.Value + _drawningWidth + EntityTransport.Step
                    < _pictureWidth.Value)
                {
                    _startPosX += (int)EntityTransport.Step;
                }
                return true;
            //вниз
            case DirectionType.Down:
                if (_startPosY.Value + _drawningHeight + EntityTransport.Step
                    < _pictureHeight.Value)
                {
                    _startPosY += (int)EntityTransport.Step;
                }
                return true;

            default:
                return false;
                // Перемещение объекта (удалось перемещение - true \ false)
        }
    }

    public virtual void DrawTransport(Graphics g) // < virtual
    {
        if (EntityTransport == null || !_startPosX.HasValue ||
        !_startPosY.HasValue)
        {
            return;
        }

        Pen pen = new(Color.Black, 2);
        Brush mainBrush = new SolidBrush(EntityTransport.MainColor);

        //границы cruiser
        Point point0 = new Point(_startPosX.Value + 2, _startPosY.Value + 7);
        Point point1 = new Point(_startPosX.Value + 2, _startPosY.Value + 30);
        Point point2 = new Point(_startPosX.Value + 184, _startPosY.Value + 42);
        Point point3 = new Point(_startPosX.Value + 260, _startPosY.Value + 34);
        Point point4 = new Point(_startPosX.Value + 300, _startPosY.Value + 22);
        Point point5 = new Point(_startPosX.Value + 260, _startPosY.Value + 10);
        Point point6 = new Point(_startPosX.Value + 184, _startPosY.Value + 2);

        Point[] boarders = {
            point0,
            point1,
            point2,
            point3,
            point4,
            point5,
            point6
        };

        g.DrawPolygon(pen, boarders);
        g.FillPolygon(mainBrush, boarders);

        // салон на верхней палубе
        int y_h = EntityTransport.values[1];
        g.DrawRectangle(pen, _startPosX.Value + 100, _startPosY.Value + y_h, 38, 24);
        g.DrawRectangle(pen, _startPosX.Value + 110, _startPosY.Value + y_h + 6, 20, 12);
        g.FillRectangle(mainBrush, _startPosX.Value + 110, _startPosY.Value + y_h + 6, 20, 12);
        g.DrawRectangle(pen, _startPosX.Value + 117, _startPosY.Value + y_h + 18, 6, 20);
        g.FillRectangle(mainBrush, _startPosX.Value + 117, _startPosY.Value + y_h + 18, 6, 20);
    }

    public int? GetPosX => _startPosX;
    public int? GetPosY => _startPosY;
    public int GetWidth => _drawningWidth;
    public int GetHeight => _drawningHeight;
}