using System.Drawing.Drawing2D;

namespace ProjectCruiser;
public class DrawningBase
{
    // Класс-сущность
    public EntityBase? EntityB { get; private set; }
    private int? _pictureWidth; // Ширина окна
    private int? _pictureHeight; // Высота окна
    private int? _startPosX; // Левая координата прорисовки автомобиля
    private int? _startPosY; // Верхняя кооридната прорисовки автомобиля

    private readonly int _drawningWidth = 300; // Ширина прорисовки автомобиля
    private readonly int _drawningHeight = 42; // Высота прорисовки автомобиля

    // Инициализация свойств
    public void Init(int speed, double weight,
        Color bodyColor, Color additionalColor, bool pad,
        bool hangar, bool deckhouse)
    {
        EntityB = new EntityBase();
        EntityB.Init(speed, weight, bodyColor,
            additionalColor, pad, hangar, deckhouse);

        _pictureWidth = null;
        _pictureHeight = null;
        _startPosX = null;
        _startPosY = null;
    }

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

    // Установка границ поля
    public bool SetPictureSize(int w, int h)
    {
        if (w > _pictureWidth || h > _pictureHeight)
        {
            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 (EntityB == null || !_startPosX.HasValue ||
        !_startPosY.HasValue)
        {
            return false;
        }

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

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

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

        Pen pen = new(Color.Black, 2);
        Brush PadBrush = new HatchBrush(HatchStyle.DottedDiamond, Color.LightGray, Color.Black);
        Brush additionalBrush = new SolidBrush(EntityB.AdditionalColor);
        Brush mainBrush = new SolidBrush(EntityB.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);

        // вертолетная площадка
        if (EntityB.HelicopterPads)
        {
            g.DrawEllipse(pen, _startPosX.Value + 170, _startPosY.Value + 11, 20, 20);
            g.FillEllipse(PadBrush, _startPosX.Value + 170, _startPosY.Value + 11, 20, 20);
        }

        // салон на верхней палубе
        if (EntityB.Deckhouse)
        {
            // random location
            int y_h = EntityB.values[1];
            g.DrawRectangle(pen, _startPosX.Value + 100, _startPosY.Value + y_h, 38, 24); // 40, 26

            g.DrawRectangle(pen, _startPosX.Value + 110, _startPosY.Value + y_h + 6, 20, 12);
            g.FillRectangle(additionalBrush, _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(additionalBrush, _startPosX.Value + 117, _startPosY.Value + y_h + 18, 6, 20);
        }

        // ангар
        if (EntityB.Hangar)
        {
            int n = EntityB.values[2];
            if (n == 1) g.FillRectangle(additionalBrush, _startPosX.Value + 250, _startPosY.Value + 20, 14, 7);

            else
            {
                g.FillRectangle(additionalBrush, _startPosX.Value + 80, _startPosY.Value + 10, 10, 20);
                g.FillRectangle(additionalBrush, _startPosX.Value + 70, _startPosY.Value + 12, 8, 12);
            }
        }
    }
}