using Engine.Asset;
using Engine.Renderer.Pixel;

namespace Engine.Renderer.Texture;

public interface IConstTexture<T> where T : struct, IPixel
{
    public int Width { get; }
    public int Height { get; }

    public void ReadPixels(int x, int y, int width, int height, T[,] pixels);
}

public static class ConstTextureExtensions
{
    public static T[,] ReadPixels<T>(this IConstTexture<T> texture) where T : struct, IPixel
        => texture.ReadPixels(0, 0, texture.Width, texture.Height);

    public static T[,] ReadPixels<T>(this IConstTexture<T> texture, int x, int y, int width, int height)
        where T : struct, IPixel
    {
        var pixels = new T[width, height];
        texture.ReadPixels(x, y, width, height, pixels);

        return pixels;
    }

    public static void ReadPixels<T>(this IConstTexture<T> texture, Image<T> image) where T : struct, IPixel
        => texture.ReadPixels(0, 0, image);

    public static void ReadPixels<T>(this IConstTexture<T> texture, int x, int y, Image<T> image)
        where T : struct, IPixel =>
        texture.ReadPixels(x, y, image.Width, image.Height, image.Pixels);

    public static void ReadPixels<T>(this IConstTexture<T> texture, T[,] pixels) where T : struct, IPixel
        => texture.ReadPixels(0, 0, texture.Width, texture.Height, pixels);
}