using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http.Headers;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;

namespace AirBus
{
    public class DrawningAirBus
    {
        public EntityAirBus? EntityAirBus { get; private set; }

        // ширина и высота картинки
        private int pictureWidht;
        private int pictureHeight;

        // стартовые точки
        private int startPosX;
        private int startPosY;

        private readonly int airbusWidth = 100;
        private readonly int airbusHeight = 37;

        public bool Init(int speed, double weight, Color bodyColor, Color additionalColor, int width, int height)
        {
            pictureWidht = width;
            pictureHeight = height;

            EntityAirBus = new EntityAirBus();
            EntityAirBus.Init(speed, weight, bodyColor, additionalColor);
            return true;
        }

        //установка позиции
        public void SetPosition(int x, int y)
        {
            if (x >= 0 && x + airbusWidth <= pictureWidht && y >= 0 && y + airbusHeight <= pictureHeight)
            {
                startPosX = x;
                startPosY = y;
            }
        }

        // изменение направления движения
        public void MoveTransport(Direction direction)
        {
            if (EntityAirBus == null)
            {
                return;
            }
            switch (direction)
            {
                case Direction.Left:
                    if (startPosX - EntityAirBus.Step > 0)
                    {
                        startPosX -= (int)EntityAirBus.Step;
                    }
                    break;
                case Direction.Right:
                    if (startPosX + EntityAirBus.Step <= pictureWidht)
                    {
                        startPosX += (int)EntityAirBus.Step;
                    }
                    break;
                case Direction.Up:
                    if (startPosY - EntityAirBus.Step > 0)
                    {
                        startPosY -= (int)EntityAirBus.Step;
                    }
                    break;
                case Direction.Down:
                    if (startPosY + EntityAirBus.Step <= pictureHeight)
                    {
                        startPosY += (int)EntityAirBus.Step;
                    }
                    break;
            }
        }

        // РИСОВАНИЕ САМОЛЁТА
        public void DrawTransport(Graphics g)
        {
            if ( startPosX < 0 || startPosY < 0 || EntityAirBus == null)
            {
                return;
            }
            Pen pen = new(Color.Black);
            Brush additionalBrush = new SolidBrush(EntityAirBus.AdditionalColor);
            Brush additionalBrush2 = new SolidBrush(Color.Black);

            // нос
            Point point1 = new Point(startPosX + 74, startPosY + 15);
            Point point2 = new Point(startPosX + 88, startPosY + 22);
            Point point3 = new Point(startPosX + 74, startPosY + 27);
            Point[] PointsNose = { point1, point2, point3 };

            g.DrawPolygon(pen, PointsNose);
            g.FillPolygon(additionalBrush, PointsNose);

            // хвост
            Point point4 = new Point(startPosX + 4, startPosY + 17);
            Point point5 = new Point(startPosX + 3, startPosY);
            Point point6 = new Point(startPosX + 21, startPosY + 17);

            Point[] PointsTail = { point4, point5, point6 };
            g.DrawPolygon(pen, PointsTail);
            g.FillPolygon(additionalBrush, PointsTail);

            // тело
            g.DrawRectangle(pen, startPosX + 2, startPosY + 14, 72, 14);
            g.FillRectangle(additionalBrush, startPosX + 2, startPosY + 14, 72, 14);

            //шасси
            g.DrawEllipse(pen, startPosX + 21, startPosY + 30, 3, 3);
            g.FillEllipse(additionalBrush, startPosX + 21, startPosY + 30, 3, 3);

            g.DrawEllipse(pen, startPosX + 25, startPosY + 30, 3, 3);
            g.FillEllipse(additionalBrush, startPosX + 25, startPosY + 30, 3, 3);

            g.DrawEllipse(pen, startPosX + 70, startPosY + 30, 3, 3);
            g.FillEllipse(additionalBrush, startPosX + 70, startPosY + 30, 3, 3);

            // Крыло
            g.DrawEllipse(pen, startPosX + 24, startPosY + 20, 31, 4);
            g.FillEllipse(additionalBrush, startPosX + 24, startPosY + 20, 31, 4);


            // у хвоста
            g.DrawEllipse(pen, startPosX, startPosY + 14, 14, 5);
            g.FillEllipse(additionalBrush, startPosX, startPosY + 14, 14, 5);

        }

        public void ChangeBorders(int width, int height)
        {
            pictureWidht = width;
            pictureHeight = height;
            if (pictureWidht <= airbusWidth || pictureHeight <= airbusWidth)
            {
                pictureWidht = null;
                pictureHeight = null;
                return;
            }
            if ( startPosX + airbusWidth > pictureWidht)
            {
                startPosX = pictureWidht.Value - airbusWidth;
            }
            if ( startPosY + airbusHeight > pictureHeight)
            {
                startPosY = pictureHeight.Value - airbusHeight;
            }
        }
    }
}