using ProjectLainer.Entities;
using ProjectLainer.MovementStrategy;
using System.Drawing;

namespace ProjectLainer.DrawningObjects
{
    public class DrawingLainer
    {
        public EntityLainer? EntityLainer { get; protected set; }
        private int _pictureWidth;
        private int _pictureHeight;
        protected int _startPosX;
        protected int _startPosY;
        public IMoveableObject GetMoveableObject => new DrawningObjectLainer(this);
        public DrawingLainer(int speed, double weight, Color bodyColor, int
        width, int height)
        {
            if (width < _LainerWidth || height < _LainerHeight)
                return;
            _pictureWidth = width;
            _pictureHeight = height;
            EntityLainer = new EntityLainer(speed, weight, bodyColor);
        }
        
        protected DrawingLainer(int speed, double weight, Color bodyColor, int
        width, int height, int carWidth, int carHeight)
        {
            if (width < _LainerWidth || height < _LainerHeight)
                return;
            _pictureWidth = width;
            _pictureHeight = height;
            _LainerWidth = carWidth;
            _LainerHeight = carHeight;
            EntityLainer = new EntityLainer(speed, weight, bodyColor);
        }
         public void SetPosition(int x, int y)
        {

            if (x + _LainerWidth < _pictureWidth && x + _LainerWidth > 0)
            {
                _startPosX = x;
            }
            if (y + _LainerHeight < _pictureHeight && y + _LainerHeight > 0)
            {
                _startPosY = y;
            }
        }
        public virtual void DrawTransport(Graphics g)
        {
            if (EntityLainer == null)
            {
                return;
            }
            Brush brBlue = new SolidBrush(Color.LightBlue);
            //отрисовка труб
            Brush brush = new SolidBrush(Color.Black);
            Rectangle smokestack1 = new Rectangle(_startPosX + 20, _startPosY, 20, 50);
            Rectangle smokestack2 = new Rectangle(_startPosX + 60, _startPosY, 20, 50);
            g.FillRectangle(brush, smokestack1);
            g.FillRectangle(brush, smokestack2);
            //границы лайнера
            Pen pen = new(Color.Red);
            brush = new SolidBrush(Color.Red);
            Point point1 = new Point(_startPosX, _startPosY + 50);
            Point point2 = new Point(_startPosX + _LainerWidth, _startPosY + 50);
            Point point3 = new Point(_startPosX + 20, _startPosY + 80);
            Point point4 = new Point(_startPosX + 80, _startPosY + 80);
            Point[] points = { point1, point2, point4, point3 };
            g.DrawPolygon(pen, points);
            g.FillPolygon(brush, points);
            //1 палуба
            brush = new SolidBrush(EntityLainer.BodyColor);
            Rectangle deck = new Rectangle(_startPosX + 5, _startPosY + 30, _LainerWidth - 10, 20);
            g.FillRectangle(brush, deck);
            //стекла
            for (int i = 1; i < 5; i++)
            {
                g.FillEllipse(brBlue, _startPosX + i * 16, _startPosY + 33, 14, 14);
            }
        }
        public int GetPosX => _startPosX;
        public int GetPosY => _startPosY;
        private readonly int _LainerWidth = 150;
        private readonly int _LainerHeight = 80;
        public int GetWidth => _LainerWidth;
        public int GetHeight => _LainerHeight;
        public bool CanMove(DirectionType direction)
        {
            if (EntityLainer == null)
            {
                return false;
            }
            return direction switch
            {
                //влево
                DirectionType.Left => _startPosX - EntityLainer.Step > 0,
                //вверх
                DirectionType.Up => _startPosY - EntityLainer.Step > 0,
                // вправо
                DirectionType.Right => _startPosX + _LainerWidth + EntityLainer.Step < _pictureWidth,
                //вниз
                DirectionType.Down => _startPosY + _LainerHeight + EntityLainer.Step < _pictureHeight,
                _ => false,
            };
        }
        public void MoveTransport(DirectionType direction)
        {
            if (!CanMove(direction) || EntityLainer == null)
            {
                return;
            }
            switch (direction)
            {
                //влево
                case DirectionType.Left:
                    if (_startPosX - EntityLainer.Step > 0)
                    {
                        _startPosX -= (int)EntityLainer.Step;
                    }
                    else
                    {
                        _startPosX = 1;
                    }
                    break;
                //вверх
                case DirectionType.Up:
                    if (_startPosY - EntityLainer.Step > 0)
                    {
                        _startPosY -= (int)EntityLainer.Step;
                    }
                    else
                    {
                        _startPosY = 1;
                    }
                    break;
                // вправо
                case DirectionType.Right:
                    if (_startPosX + EntityLainer.Step <= _pictureWidth - _LainerWidth)
                    {
                        _startPosX += (int)EntityLainer.Step;
                    }
                    else
                    {
                        _startPosX = _pictureWidth - _LainerWidth;
                    }
                    break;
                //вниз
                case DirectionType.Down:
                    if (_startPosY + EntityLainer.Step < _pictureHeight - _LainerHeight)
                    {
                        _startPosY += (int)EntityLainer.Step;
                    }
                    else
                    {
                        _startPosY = _pictureHeight - _LainerHeight;
                    }
                    break;
            }
        }
    }
}