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

namespace DumpTruck
{
    public class DrawingDumpTruck
	{
		/// <summary>
		/// Класс-сущность
		/// </summary>
		public EntityDumpTruck? EntityDumpTruck { get; private set; }
		/// <summary>
		/// Ширина окна
		/// </summary>
		private int _pictureWidth;
		/// <summary>
		/// Высота окна
		/// </summary>
		private int _pictureHeight;
		/// <summary>
		/// Левая координата прорисовки самосвала
		/// </summary>
		private int _startPosX;
		/// <summary>
		/// Верхняя кооридната прорисовки самосвала
		/// </summary>
		private int _startPosY;
		/// <summary>
		/// Ширина прорисовки самосвала
		/// </summary>
		private readonly int _truckWidth = 160;
		/// <summary>
		/// Высота прорисовки самосвала
		/// </summary>
		private readonly int _truckHeight = 90;


        /// <summary>
        /// Инициализация свойств
        /// </summary>
        /// <param name="speed">Скорость</param>
        /// <param name="weight">Вес</param>
        /// <param name="bodyColor">Основной цвет самосвала</param>
		/// <param name="tent">Признак наличия тента</param>
        /// <param name="dumpBox">Признак наличия кузова</param>
        /// <param name="dumpBoxColor">Цвет кузова</param>
        /// <param name="tentColor">Цвет тента</param>
        /// <param name="width">Ширина картинки</param>
        /// <param name="height">Высота картинки</param>
        /// <returns>true - объект создан, false - проверка не пройдена, нельзя создать объект в этих размерах</returns>
        public bool Init(int speed, double weight, Color bodyColor, bool tent, bool dumpBox, Color tentColor, Color dumpBoxColor, int width, int height)
        {
            _pictureWidth = width;
            _pictureHeight = height;
            if (_pictureHeight < _truckHeight || _pictureWidth < _truckWidth) return false;
            EntityDumpTruck = new EntityDumpTruck();
            EntityDumpTruck.Init(speed, weight, bodyColor, tent, dumpBox, tentColor, dumpBoxColor);
            return true;
        }
        /// <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 + _truckWidth > _pictureWidth) { x = 0; }
            if (y < 0 || y + _truckHeight > _pictureHeight) { y = 0; }
            _startPosX = x;
            _startPosY = y;
        }
        /// <summary>
        /// Изменение направления перемещения
        /// </summary>
        /// <param name="direction">Направление</param>
        public void MoveTransport(Direction direction)
        {
            if (EntityDumpTruck == null)
            {
                return;
            }
            switch (direction)
            {
                //влево
                case Direction.Left:
                    if (_startPosX - EntityDumpTruck.Step > 0)
                    {
                        _startPosX -= (int)EntityDumpTruck.Step;
                    }
                    break;
                //вверх
                case Direction.Up:
                    if (_startPosY - EntityDumpTruck.Step > 0)
                    {
                        _startPosY -= (int)EntityDumpTruck.Step;
                    }
                    break;
                // вправо
                case Direction.Right:
                    if (_startPosX + _truckWidth + EntityDumpTruck.Step < _pictureWidth)
                    {
                        _startPosX += (int)EntityDumpTruck.Step;
                    }
                    break;
                //вниз
                case Direction.Down:
                    if (_startPosY + _truckHeight + EntityDumpTruck.Step < _pictureHeight)
                    {
                        _startPosY += (int)EntityDumpTruck.Step;
                    }
                    break;
            }
        }

        /// <summary>
        /// Прорисовка объекта
        /// </summary>
        /// <param name="g"></param>
        public void DrawTransport(Graphics g)
		{
            if (EntityDumpTruck == null)
            {
                return;
            }
            Brush brush = new SolidBrush(EntityDumpTruck.BodyColor);
            g.FillRectangle(brush, _startPosX, _startPosY + 40, 160, 10);
            g.FillRectangle(brush, _startPosX + 120, _startPosY, 40, 40);
            g.FillEllipse(brush, _startPosX, _startPosY + 50, 40, 40);
            g.FillEllipse(brush, _startPosX + 40, _startPosY + 50, 40, 40);
            g.FillEllipse(brush, _startPosX + 120, _startPosY + 50, 40, 40);
            if (EntityDumpTruck.DumpBox)
            {
                Brush brDumpBox = new SolidBrush(EntityDumpTruck.DumpBoxColor);
                Point point1 = new Point(_startPosX + 20, _startPosY);
                Point point2 = new Point(_startPosX + 120, _startPosY);
                Point point3 = new Point(_startPosX + 100, _startPosY + 39);
                Point point4 = new Point(_startPosX, _startPosY + 39);
                Point[] dumpBoxPoints = { point1, point2, point3, point4};
                g.FillPolygon(brDumpBox, dumpBoxPoints);
            }
            if (EntityDumpTruck.DumpBox && EntityDumpTruck.Tent)
            {
                Brush brTent = new SolidBrush(EntityDumpTruck.TentColor);
                Point point1 = new Point(_startPosX + 15, _startPosY);
                Point point2 = new Point(_startPosX + 120, _startPosY);
                Point point3 = new Point(_startPosX + 115, _startPosY + 10);
                Point point4 = new Point(_startPosX + 10, _startPosY + 10);
                Point[] tentPoints = { point1, point2, point3, point4 };
                g.FillPolygon(brTent, tentPoints);
            }
        }
    }
}