using Sarand.Net.Standard.Base.App;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.PixelFormats;
using System;
using System.Collections.Generic;
using System.Text;

namespace Sarand.Net.Standard.Base.Utils
{
	//=======================================================================
	// Image handling methods utilising SixLabors ImageSharp package.
	//=======================================================================
	public static class ImageUtils
	{
		//-------------------------------------------------------------------
		private static readonly String className = typeof(ImageUtils).ToString();

		//-------------------------------------------------------------------
		public class ImageConfig
		{
			public byte[] ImageData { get; set; }
			public bool ValidImage { get; set; }
			public int Width { get; set; }
			public int Height { get; set; }
		}
		public static ImageConfig VerifyImageData(byte[] imageData)
		{
			String fn = className + ".VerifyImageData";
			ImageConfig imageConfig = new ImageConfig();
			imageConfig.ImageData = imageData;
			try
			{
				var image = Image.Load<Rgba32>(imageData);
				if (image == null) return imageConfig;
				imageConfig.Width = image.Width;
				imageConfig.Height = image.Height;
				imageConfig.ValidImage = true;
				return imageConfig;
			}
			catch (Exception exc)
			{
				SaLogger.Warn(fn + " " + ExceptionUtil.GetLogMessage(exc));
			}
			return imageConfig;
		}

		// Load from byte array.
		public static Image LoadImage(byte[] imageData)
		{
			var image = Image.Load<Rgba32>(imageData);
			return image;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}