using ElectricLocomotive;
using System;
using System.Collections.Generic;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ElectricLocomotive
{
    public class DrawingLocomotiv
    {
        public EntityLocomotiv? EntityLocomotiv { get; protected set; }
        protected int _pictureWidth;
        protected int _pictureHeight;
        public int GetPosX => _startPosX;
        public int GetPosY => _startPosY;
        public int GetWidth => _vehicleWidth;
        public int GetHeight => _vehicleHeight;
        protected int _startPosX;
        protected int _startPosY;
        protected readonly int _vehicleWidth = 170;
        protected readonly int _vehicleHeight = 110;
        
        public DrawingLocomotiv(int speed, double weight,int width,int height)
        {
            if (width <= _vehicleWidth || height <= _vehicleHeight) {
                return;
            }
            _pictureWidth = width;
            _pictureHeight = height;
            EntityLocomotiv = new EntityLocomotiv(speed, weight);
        }
        protected DrawingLocomotiv(int speed, double weight,int width,int height, int vehicleHeight, int vehicleWidth)
        {
            if (width <= _vehicleWidth || height <= _vehicleHeight) {
                return;
            }
            _pictureWidth = width;
            _pictureHeight = height;
            EntityLocomotiv = new EntityLocomotiv(speed, weight);
        }
        public bool CanMove(DirectionType direction)
        {
            if (EntityLocomotiv == null)
                return false;
            return direction switch
            {
                DirectionType.Left => _startPosX - EntityLocomotiv.Step > 0,
                DirectionType.Up => _startPosY - EntityLocomotiv.Step > 0,
                DirectionType.Right => _startPosX + EntityLocomotiv.Step < _pictureWidth,
                DirectionType.Down => _startPosY -+ EntityLocomotiv.Step < _pictureHeight
            };
        }
        public void SetPosition(int x,int y)
        {
            if (EntityLocomotiv == null) return;
            _startPosX = x;
            _startPosY = y;
            if (x + _vehicleWidth >= _pictureWidth || y + _vehicleHeight >= _pictureHeight)
            {
                _startPosX = 1;
                _startPosY = 1;
            }
        }
        public void MoveTransport(DirectionType direction)
        {
            if (EntityLocomotiv == null) return;

            switch (direction)
            {
                case DirectionType.Left:
                    if (_startPosX - EntityLocomotiv.Step > 0)
                    {
                        _startPosX -= (int)EntityLocomotiv.Step;
                    }
                    break;
                case DirectionType.Right:
                    if (_startPosX + EntityLocomotiv.Step + _vehicleWidth < _pictureWidth)
                    {
                        _startPosX += (int)EntityLocomotiv.Step;
                    }
                    break;
                case DirectionType.Up:
                    if (_startPosY - EntityLocomotiv.Step > 0)
                    {
                        _startPosY -= (int)EntityLocomotiv.Step;
                    }
                    break;
                case DirectionType.Down:
                    if (_startPosY + EntityLocomotiv.Step + _vehicleHeight < _pictureHeight)
                    {
                        _startPosY += (int)EntityLocomotiv.Step;
                    }
                    break;
            }
        }
        public virtual void DrawLoco(Graphics g)
        {
            if (EntityLocomotiv == null) return;
            Pen penBody = new(EntityLocomotiv.ColorBody, 3);
            Pen penWindow = new(EntityLocomotiv.ColorWindow, 3);
            SolidBrush doorBrush = new(EntityLocomotiv.ColorFillBody);
            Pen penWheel = new(EntityLocomotiv.ColorBody, 2);
            
            //Body
            g.DrawRectangle(penBody, _startPosX, _startPosY + _vehicleHeight - 50, _vehicleWidth - 10, _vehicleHeight - 80);
            Point[] upBodyPoints = { new Point(_startPosX, _startPosY + 60), new Point(_startPosX + 10, _startPosY + 30), new Point(_startPosX + 150, _startPosY + 30), new Point(_startPosX + 160, _startPosY + 60) };
            g.DrawPolygon(penBody, upBodyPoints);
            //Door
            g.DrawRectangle(penBody, _startPosX + _vehicleWidth / 2 - 15, _startPosY + 45, _vehicleWidth / 10, _vehicleHeight / 2 - 10);
            g.FillRectangle(doorBrush, _startPosX + _vehicleWidth / 2 - 14, _startPosY + 46, _vehicleWidth / 10 - 1, _vehicleHeight / 2 - 12);
            //Windows
            int xWindow = _startPosX + 15;
            int yWindow = _startPosY + 37;
            for (int i = 0; i < 2; i++)
            {
                g.DrawRectangle(penWindow, xWindow, yWindow, 15, 15);
                xWindow += 25;
            }
            xWindow += 35;
            for (int i = 0; i < 2; i++)
            {
                g.DrawRectangle(penWindow, xWindow, yWindow, 15, 15);
                xWindow += 25;
            }
            //wheels
            int xWheel = _startPosX + 5;
            int yWheel = _startPosY + _vehicleHeight - 20;
            for (int i = 0; i < 4; i++)
            {
                g.DrawEllipse(penWheel, xWheel, yWheel, 20, 20);
                xWheel += 40;
            }
        }
    }
}