using System;
using System.Collections.Generic;
using System.Drawing;
using System.Runtime.Remoting.Messaging;

namespace SpritePacker
{
	public class Sprite 
	{
		private Rectangle area;
		private string filename;
		private Image image;

		public bool Placed { get; set; } = false;

		public Rectangle Area
		{
			get { return area; }
			set { area = value; }
		}
		public string Filename
		{
			get { return filename; }
			set { filename = value; }
		}
		public Image Image { get { return image; } }

		public Point Location { get { return new Point(X, Y); } }
		public int X
		{
			get { return area.X; }
			set { area.X = value; }
		}
		public int Y
		{
			get { return area.Y; }
			set { area.Y = value; }
		}
		public int Width
		{
			get { return area.Width; }
			set { area.Width = value; }
		}
		public int Height
		{
			get { return area.Height; }
			set { area.Height = value; }
		}
		public int Top { get { return area.Top; } }
		public int Bottom { get { return area.Bottom; } }
		public int Left { get { return area.Left; } }
		public int Right { get { return area.Right; } }

		public int AreaSize { get { return area.Width * area.Height; } }
		public int MaxSideLength { get { return Math.Max(area.Width, area.Height); } }

		public Sprite(string inFilename)
		{
			Filename = inFilename;

			image = Image.FromFile(filename);
			Width = image.Width;
			Height = image.Height;
		}

		public static int GetLargestSize(List<Sprite> sprList)
		{
			int largestSoFar = 0;
			foreach(Sprite spr in sprList)
			{
				if (spr.Area.Width > largestSoFar)
					largestSoFar = spr.Area.Width;
			}
			return largestSoFar;
		}

		public List<Sprite> GetIntersectors(List<Sprite> spriteList)
		{
			List<Sprite> result = new List<Sprite>();
			foreach(Sprite spr in spriteList)
			{
				if (spr == this) // Don't attempt to check for collisions with ourselves
					continue;
				if (spr.IntersectsWith(this))
					result.Add(spr);
			}
			return result;
		}
		public List<Sprite> GetIntersectorsX(List<Sprite> spriteList)
		{
			List<Sprite> result = new List<Sprite>();
			foreach(Sprite spr in spriteList)
			{
				if (spr.IntersectsWithX(this))
					result.Add(spr);
			}
			return result;
		}
		public List<Sprite> GetIntersectorsY(List<Sprite> spriteList)
		{
			List<Sprite> result = new List<Sprite>();
			foreach(Sprite spr in spriteList)
			{
				if (spr.IntersectsWithY(this))
					result.Add(spr);
			}
			return result;
		}

		public bool IntersectsWith(List<Sprite> otherSprites)
		{
			foreach (Sprite spr in otherSprites)
			{
				if (IntersectsWith(spr))
					return true;
			}
			return false;
		}
		public bool IntersectsWith(Sprite otherSprite)
		{
			return otherSprite.Area.IntersectsWith(Area);
		}

		public bool IntersectsWithX(List<Sprite> otherSprites)
		{
			foreach (Sprite spr in otherSprites)
			{
				if (IntersectsWithX(spr))
					return true;
			}
			return false;
		}
		public bool IntersectsWithY(List<Sprite> otherSprites)
		{
			foreach (Sprite spr in otherSprites)
			{
				if (IntersectsWithY(spr))
					return true;
			}
			return false;
		}

		public bool IntersectsWithX(Sprite otherSprite)
		{
			if(Area.Right > otherSprite.Area.X &&
				Area.X < otherSprite.Area.Right)
				return true;
			else
				return false;
		}
		public bool IntersectsWithY(Sprite otherSprite)
		{
			if(Area.Bottom > otherSprite.Area.Y &&
				Area.Y < otherSprite.Area.Bottom)
				return true;
			else
				return false;
		}

		public override string ToString()
		{
			return string.Format("Sprite {0} at {1}", Filename, Area);
		}
	}
}