using System;

namespace ScreenConnect;

public class ScreenCodecFactory
{
	private static int DefaultZStandardCompressionLevel => 6;

	private static int DefaultZStandardWindowLog => 28;

	private static int TestZStandardWindowLog => 20;

	public ScreenCodec CreateEncoder(ScreenCodecID codecID)
	{
		return codecID switch
		{
			ScreenCodecID.Grayscale_DeflateDefault_ZlibWrapper => new GrayscaleScreenEncoder(new DeflateEncoder(CoderCompressionLevel.Default, CoderCompressionStrategy.Default, DeflateWrapper.Zlib)), 
			ScreenCodecID.TrueColor_DeflateDefault_ZlibWrapper_RowPrefix => new TrueColorScreenEncoder(new DeflateEncoder(CoderCompressionLevel.Default, CoderCompressionStrategy.Default, DeflateWrapper.Zlib), useRowFilter: true), 
			ScreenCodecID.TrueColorEx_DeflateDefault => throw new NotSupportedException(), 
			ScreenCodecID.TrueColor_DeflateDefault => new TrueColorScreenEncoder(new DeflateEncoder(CoderCompressionLevel.Default, CoderCompressionStrategy.Default, DeflateWrapper.None), useRowFilter: false), 
			ScreenCodecID.WebColor_DeflateDefault => new WebColorScreenEncoder(new DeflateEncoder(CoderCompressionLevel.Default, CoderCompressionStrategy.Default, DeflateWrapper.None)), 
			ScreenCodecID.Grayscale_DeflateDefault => new GrayscaleScreenEncoder(new DeflateEncoder(CoderCompressionLevel.Default, CoderCompressionStrategy.Default, DeflateWrapper.None)), 
			ScreenCodecID.TrueColor_DeflateHighSpeed => new TrueColorScreenEncoder(new DeflateEncoder(CoderCompressionLevel.BestSpeed, CoderCompressionStrategy.Default, DeflateWrapper.None), useRowFilter: false), 
			ScreenCodecID.WebColor_DeflateHighSpeed => new WebColorScreenEncoder(new DeflateEncoder(CoderCompressionLevel.BestSpeed, CoderCompressionStrategy.Default, DeflateWrapper.None)), 
			ScreenCodecID.Grayscale_DeflateHighSpeed => new GrayscaleScreenEncoder(new DeflateEncoder(CoderCompressionLevel.BestSpeed, CoderCompressionStrategy.Default, DeflateWrapper.None)), 
			ScreenCodecID.WebP => new WebPEncoder(80f), 
			ScreenCodecID.TrueColor_ZStandard => new TrueColorScreenEncoder(new ZStandardEncoder(DefaultZStandardCompressionLevel, DefaultZStandardWindowLog), useRowFilter: false), 
			ScreenCodecID.WebColor_ZStandard => new WebColorScreenEncoder(new ZStandardEncoder(DefaultZStandardCompressionLevel, DefaultZStandardWindowLog)), 
			ScreenCodecID.Grayscale_ZStandard => new GrayscaleScreenEncoder(new ZStandardEncoder(DefaultZStandardCompressionLevel, DefaultZStandardWindowLog)), 
			ScreenCodecID.TestCoder_ZStandard => new TrueColorScreenEncoder(new ZStandardEncoder(DefaultZStandardCompressionLevel, TestZStandardWindowLog), useRowFilter: false), 
			ScreenCodecID.TrueColor_Raw => new TrueColorScreenEncoder(null, useRowFilter: false), 
			ScreenCodecID.WebColor_Raw => new WebColorScreenEncoder(null), 
			ScreenCodecID.Grayscale_Raw => new GrayscaleScreenEncoder(null), 
			_ => throw new ArgumentOutOfRangeException(), 
		};
	}

	public ScreenCodec CreateDecoder(ScreenCodecID codecID)
	{
		switch (codecID)
		{
		case ScreenCodecID.Grayscale_DeflateDefault_ZlibWrapper:
			return new GrayscaleScreenDecoder(new DeflateDecoder(DeflateWrapper.Zlib));
		case ScreenCodecID.TrueColor_DeflateDefault_ZlibWrapper_RowPrefix:
			return new TrueColorFilterScreenDecoder(new DeflateDecoder(DeflateWrapper.Zlib));
		case ScreenCodecID.TrueColorEx_DeflateDefault:
			throw new NotSupportedException();
		case ScreenCodecID.TrueColor_ZStandard:
			return new TrueColorScreenDecoder(new ZStandardDecoder());
		case ScreenCodecID.WebColor_ZStandard:
			return new WebColorScreenDecoder(new ZStandardDecoder());
		case ScreenCodecID.Grayscale_ZStandard:
			return new GrayscaleScreenDecoder(new ZStandardDecoder());
		case ScreenCodecID.TrueColor_DeflateDefault:
		case ScreenCodecID.TrueColor_DeflateHighSpeed:
			return new TrueColorScreenDecoder(CreateDeflateDecoder(DeflateWrapper.None));
		case ScreenCodecID.WebColor_DeflateDefault:
		case ScreenCodecID.WebColor_DeflateHighSpeed:
			return new WebColorScreenDecoder(CreateDeflateDecoder(DeflateWrapper.None));
		case ScreenCodecID.Grayscale_DeflateDefault:
		case ScreenCodecID.Grayscale_DeflateHighSpeed:
			return new GrayscaleScreenDecoder(CreateDeflateDecoder(DeflateWrapper.None));
		case ScreenCodecID.TrueColor_Raw:
			return new TrueColorScreenDecoder(null);
		case ScreenCodecID.WebColor_Raw:
			return new WebColorScreenDecoder(null);
		case ScreenCodecID.Grayscale_Raw:
			return new GrayscaleScreenDecoder(null);
		case ScreenCodecID.WebP:
			return new WebPDecoder();
		default:
			throw new ArgumentOutOfRangeException();
		}
	}

	protected virtual IMultiCallCoder CreateDeflateDecoder(DeflateWrapper wrapper)
	{
		return new DeflateDecoder(wrapper);
	}
}