using System;
using System.Collections.Generic;
using UnityEngine;

namespace CTS
{
	public static class CTSConstants
	{
		public enum ShaderType
		{
			Unity = 0,
			Basic = 1,
			Advanced = 2,
			Tesselation = 3,
			Lite = 4
		}

		public enum ShaderFeatureSet
		{
			None = 0,
			Cutout = 1
		}

		public enum EnvironmentRenderer
		{
			BuiltIn = 0,
			LightWeight2018x = 1,
			HighDefinition2018x = 2
		}

		public enum ShaderMode
		{
			DesignTime = 0,
			RunTime = 1
		}

		public enum AOType
		{
			None = 0,
			NormalMapBased = 1,
			TextureBased = 2
		}

		public enum TextureSize
		{
			Texture_64 = 0,
			Texture_128 = 1,
			Texture_256 = 2,
			Texture_512 = 3,
			Texture_1024 = 4,
			Texture_2048 = 5,
			Texture_4096 = 6,
			Texture_8192 = 7
		}

		public enum TextureType
		{
			Albedo = 0,
			Normal = 1,
			AmbientOcclusion = 2,
			Height = 3,
			Splat = 4,
			Emission = 5
		}

		public enum TextureChannel
		{
			R = 0,
			G = 1,
			B = 2,
			A = 3
		}

		[Flags]
		public enum TerrainChangedFlags
		{
			NoChange = 0,
			Heightmap = 1,
			TreeInstances = 2,
			DelayedHeightmapUpdate = 4,
			FlushEverythingImmediately = 8,
			RemoveDirtyDetailsImmediately = 0x10,
			WillBeDestroyed = 0x100
		}

		public static readonly int MajorVersion = 1;

		public static readonly int MinorVersion = 9;

		public static readonly int PatchVersion = 1;

		public static readonly string CTSPresentSymbol = "CTS_PRESENT";

		public static readonly Dictionary<CTSShaderCriteria, string> shaderNames = new Dictionary<CTSShaderCriteria, string>
		{
			{
				new CTSShaderCriteria(EnvironmentRenderer.BuiltIn, ShaderType.Basic, ShaderFeatureSet.None),
				"CTS/CTS Terrain Shader Basic"
			},
			{
				new CTSShaderCriteria(EnvironmentRenderer.BuiltIn, ShaderType.Basic, ShaderFeatureSet.Cutout),
				"CTS/CTS Terrain Shader Basic CutOut"
			},
			{
				new CTSShaderCriteria(EnvironmentRenderer.BuiltIn, ShaderType.Advanced, ShaderFeatureSet.None),
				"CTS/CTS Terrain Shader Advanced"
			},
			{
				new CTSShaderCriteria(EnvironmentRenderer.BuiltIn, ShaderType.Advanced, ShaderFeatureSet.Cutout),
				"CTS/CTS Terrain Shader Advanced CutOut"
			},
			{
				new CTSShaderCriteria(EnvironmentRenderer.BuiltIn, ShaderType.Tesselation, ShaderFeatureSet.None),
				"CTS/CTS Terrain Shader Advanced Tess"
			},
			{
				new CTSShaderCriteria(EnvironmentRenderer.BuiltIn, ShaderType.Tesselation, ShaderFeatureSet.Cutout),
				"CTS/CTS Terrain Shader Advanced Tess CutOut"
			},
			{
				new CTSShaderCriteria(EnvironmentRenderer.BuiltIn, ShaderType.Lite, ShaderFeatureSet.None),
				"CTS/CTS Terrain Shader Lite"
			}
		};

		public const string CTSShaderName = "CTS/CTS Terrain";

		public const string CTSShaderMeshBlenderName = "CTS/CTS_Model_Blend";

		public const string CTSShaderMeshBlenderAdvancedName = "CTS/CTS_Model_Blend_Advanced";

		public static readonly List<TextureFormat> desktopAndConsoleFormats = new List<TextureFormat>
		{
			TextureFormat.RGB24,
			TextureFormat.RGBA32,
			TextureFormat.RGBAHalf,
			TextureFormat.DXT1,
			TextureFormat.DXT5,
			TextureFormat.BC6H,
			TextureFormat.BC7
		};

		public static int GetTextureSize(TextureSize size)
		{
			return size switch
			{
				TextureSize.Texture_64 => 64, 
				TextureSize.Texture_128 => 128, 
				TextureSize.Texture_256 => 256, 
				TextureSize.Texture_512 => 512, 
				TextureSize.Texture_1024 => 1024, 
				TextureSize.Texture_2048 => 2048, 
				TextureSize.Texture_4096 => 4096, 
				TextureSize.Texture_8192 => 8192, 
				_ => 0, 
			};
		}
	}
}