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

public class WebGLTextureMaxSizeTool
{
    private const int TargetMaxSize = 1024;

    [MenuItem("Tools/Force All Textures MaxSize = 1024")]
    public static void ForceWebGLTextureMaxSize()
    {
        string[] guids = AssetDatabase.FindAssets("t:Texture2D", new[] { "Assets" });

        int changedCount = 0;

        try
        {
            AssetDatabase.StartAssetEditing();

            foreach (string guid in guids)
            {
                string path = AssetDatabase.GUIDToAssetPath(guid);

                TextureImporter importer = AssetImporter.GetAtPath(path) as TextureImporter;
                if (importer == null)
                    continue;

                // 跳过 Sprite Atlas（可选）
                //if (importer.textureType == TextureImporterType.Sprite && importer.spriteImportMode == SpriteImportMode.Multiple)
                //{
                //    // 如果你不想跳过，可以删掉这段
                //}

                TextureImporterPlatformSettings webglSettings =
                    importer.GetPlatformTextureSettings("WebGL");

                bool needReimport = false;

                if (!webglSettings.overridden)
                {
                    webglSettings.overridden = true;
                    needReimport = true;
                }

                if (webglSettings.maxTextureSize != TargetMaxSize)
                {
                    webglSettings.maxTextureSize = TargetMaxSize;
                    needReimport = true;
                }

                if (needReimport)
                {
                    importer.SetPlatformTextureSettings(webglSettings);
                    importer.SaveAndReimport();
                    changedCount++;
                }
            }
        }
        finally
        {
            AssetDatabase.StopAssetEditing();
            AssetDatabase.SaveAssets();
            AssetDatabase.Refresh();
        }

        EditorUtility.DisplayDialog(
            "WebGL Texture Tool",
            $"处理完成\n\n修改贴图数量：{changedCount}",
            "OK"
        );

        Debug.Log($"[WebGLTextureMaxSizeTool] 修改贴图数量：{changedCount}");
    }
}