using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WarmlyLocomotive.Entities;

namespace WarmlyLocomotive.DrawningObjects
{
    /// <summary>
    /// Класс, отвечающий за прорисовку и перемещение объекта-сущности
    /// </summary>
    public class DrawningWarmlyLocomotive
    {
        /// <summary>
        /// Класс-сущность
        /// </summary>
        public EntityWarmlyLocomotive? EntityWarmlyLocomotive { get; protected set; }
        /// <summary>
        /// Ширина окна
        /// </summary>
        private int _pictureWidth;
        /// <summary>
        /// Высота окна
        /// </summary>
        private int _pictureHeight;
        /// <summary>
        /// Левая координата прорисовки локомотива
        /// </summary>
        protected int _startPosX;
        /// <summary>
        /// Верхняя кооридната прорисовки локомотива
        /// </summary>
        protected int _startPosY;
        /// <summary>
        /// Ширина прорисовки локомотива
        /// </summary>
        protected readonly int _WarmlyLocomotiveWidth = 200;
        /// <summary>
        /// Высота прорисовки локомотива
        /// </summary>
        protected readonly int _WarmlyLocomotiveHeight = 75;
        private readonly int _trumpetHeight = 25;
        public int GetPosX => _startPosX;
        /// <summary>
        /// Координата Y объекта
        /// </summary>
        public int GetPosY => _startPosY;
        /// <summary>
        /// Ширина объекта
        /// </summary>
        public int GetWidth => _WarmlyLocomotiveWidth;
        /// <summary>
        /// Высота объекта
        /// </summary>
        public int GetHeight => _WarmlyLocomotiveHeight;
        public DrawningWarmlyLocomotive(int speed, double weight, Color bodyColor, int width, int height)
        {
            if (width < _WarmlyLocomotiveWidth || height < _WarmlyLocomotiveHeight)
            {
                return;
            }
            _pictureWidth = width;
            _pictureHeight = height;

            EntityWarmlyLocomotive = new EntityWarmlyLocomotive(speed, weight, bodyColor);
        }

        protected DrawningWarmlyLocomotive(int speed, double weight, Color bodyColor, int
    width, int height, int carWidth, int carHeight)
        {
            if (width <= _WarmlyLocomotiveWidth || height <= _WarmlyLocomotiveHeight)
            {
                return;
            }
            _pictureWidth = width;
            _pictureHeight = height;
            _WarmlyLocomotiveWidth = carWidth;
            _WarmlyLocomotiveHeight = carHeight;
            EntityWarmlyLocomotive = new EntityWarmlyLocomotive(speed, weight, bodyColor);
        }
        /// <summary>
        /// Установка позиции
        /// </summary>
        /// <param name="x">Координата X</param>
        /// <param name="y">Координата Y</param>
        public void SetPosition(int x, int y)
        {
            if (x < 0 || x >= _pictureWidth || y < 0 || y >= _pictureHeight)
            {
                _startPosX = 0;
                _startPosY = 0;
            }
            _startPosX = x;
            _startPosY = y;

        }

        public bool CanMove(Direction direction)
        {
            if (EntityWarmlyLocomotive == null)
            {
                return false;
            }
            return direction switch
            {
                //влево
                Direction.Left => _startPosX - EntityWarmlyLocomotive.Step > 0,
                //вверх
                Direction.Up => _startPosY - EntityWarmlyLocomotive.Step > 0,
                // вправо
                Direction.Right => _startPosX + EntityWarmlyLocomotive.Step + _WarmlyLocomotiveWidth < _pictureWidth,
                //вниз
                Direction.Down => _startPosY + EntityWarmlyLocomotive.Step + _WarmlyLocomotiveHeight < _pictureHeight,
                _ => false,
            };
        }

        /// <param name="direction">Направление</param>
        public void MoveTransport(Direction direction)
        {
            if (!CanMove(direction) || EntityWarmlyLocomotive == null)
            {
                return;
            }
            switch (direction)
            {
                //влево
                case Direction.Left:
                    if (_startPosX - EntityWarmlyLocomotive.Step > 0)
                    {
                        _startPosX -= (int)EntityWarmlyLocomotive.Step;
                    }
                    break;
                //вверх
                case Direction.Up:
                    if (_startPosY - _trumpetHeight - EntityWarmlyLocomotive.Step > 0)
                    {
                        _startPosY -= (int)EntityWarmlyLocomotive.Step;
                    }
                    break;
                // вправо
                case Direction.Right:

                    if (_startPosX + _WarmlyLocomotiveWidth + EntityWarmlyLocomotive.Step < _pictureWidth)
                    {
                        _startPosX += (int)EntityWarmlyLocomotive.Step;
                    }
                    break;
                //вниз
                case Direction.Down:
                    if (_startPosY + _WarmlyLocomotiveHeight + EntityWarmlyLocomotive.Step < _pictureHeight)
                    {
                        _startPosY += (int)EntityWarmlyLocomotive.Step;
                    }
                    break;
            }
        }
        /// <summary>
        /// Прорисовка объекта
        /// </summary>
        /// <param name="g"></param>
        public virtual void DrawTransport(Graphics g)
        {
            if (EntityWarmlyLocomotive == null)
            {
                return;
            }
            Pen pen = new(Color.Black, 2);
            Brush bodyBrush = new SolidBrush(EntityWarmlyLocomotive.BodyColor);
            Brush wheelBrush = new SolidBrush(Color.Black);

            //корпус 
            g.FillRectangle(bodyBrush, _startPosX + 50, _startPosY, 150, 50);
            Point[] Points = { new Point(_startPosX + 50, _startPosY + 25), new Point(_startPosX + 125, _startPosY + 25) };
            g.DrawPolygon(pen, Points);
            Point[] Points2 = { new Point(_startPosX + 150, _startPosY + 25), new Point(_startPosX + 200, _startPosY + 25) };
            g.DrawPolygon(pen, Points2);
            //окна
            g.DrawRectangle(pen, _startPosX + 125, _startPosY + 10, 25, 30);
            g.DrawRectangle(pen, _startPosX + 60, _startPosY + 7, 10, 13);
            g.DrawRectangle(pen, _startPosX + 160, _startPosY + 7, 10, 13);
            g.DrawRectangle(pen, _startPosX + 175, _startPosY + 7, 10, 13);
            //колеса
            g.FillEllipse(wheelBrush, _startPosX + 60, _startPosY + 50, 20, 20);
            g.FillEllipse(wheelBrush, _startPosX + 85, _startPosY + 50, 20, 20);
            g.FillEllipse(wheelBrush, _startPosX + 145, _startPosY + 50, 20, 20);
            g.FillEllipse(wheelBrush, _startPosX + 170, _startPosY + 50, 20, 20);

        }
    }
}