using System.IO;
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

namespace StixGames.GrassShader
{
#if UNITY_EDITOR
    public static class GrassTextureUtility
    {
        public static Texture2D SaveTextureToFile(string path, Texture2D texture, bool isReadable = false, bool isLinear = false, bool isNormal = false)
        {
            File.WriteAllBytes(path, texture.EncodeToPNG());

            //Import and load the new texture
            AssetDatabase.ImportAsset(path);
            var importer = (TextureImporter) AssetImporter.GetAtPath(path);
            importer.textureType = isNormal ? TextureImporterType.NormalMap : TextureImporterType.Default;
            importer.wrapMode = TextureWrapMode.Clamp;
            importer.isReadable = isReadable;
            importer.maxTextureSize = Mathf.Max(texture.width, texture.height);
            importer.sRGBTexture = !isLinear;
            importer.alphaSource = TextureImporterAlphaSource.FromInput;
            importer.filterMode = FilterMode.Trilinear;
            importer.textureCompression = TextureImporterCompression.Uncompressed;
            importer.SetPlatformTextureSettings(new TextureImporterPlatformSettings
            {
                name = "Standalone",
                format = TextureImporterFormat.RGBA32,
                overridden = true,
            });
            AssetDatabase.ImportAsset(path);

            return AssetDatabase.LoadAssetAtPath(path, typeof(Texture2D)) as Texture2D;
        }
    }
#endif
}