using UnityEditor;
using UnityEngine;
using System.Linq;

public class FBXMaterialRemapper : Editor
{
    [MenuItem("Assets/材质工具/Remap FBX 材质到已有材质", true)]
    static bool ValidateSelection()
    {
        return Selection.assetGUIDs.Any(guid =>
        {
            string path = AssetDatabase.GUIDToAssetPath(guid);
            return path.EndsWith(".fbx", System.StringComparison.OrdinalIgnoreCase);
        });
    }

    [MenuItem("Assets/材质工具/Remap FBX 材质到已有材质")]
    static void RemapSelectedFBXMaterials()
    {
        foreach (var guid in Selection.assetGUIDs)
        {
            string path = AssetDatabase.GUIDToAssetPath(guid);
            if (!path.EndsWith(".fbx", System.StringComparison.OrdinalIgnoreCase))
                continue;

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

            // ✅ 正确设置材质导入方式
            importer.materialImportMode = ModelImporterMaterialImportMode.ImportViaMaterialDescription;
            importer.materialLocation = ModelImporterMaterialLocation.InPrefab;
            importer.materialName = ModelImporterMaterialName.BasedOnMaterialName;
            importer.materialSearch = ModelImporterMaterialSearch.Everywhere;

            importer.SearchAndRemapMaterials(ModelImporterMaterialName.BasedOnMaterialName,
                ModelImporterMaterialSearch.Everywhere);

            AssetDatabase.ImportAsset(path, ImportAssetOptions.ForceUpdate);

            Debug.Log($"✅ 已重新设置 FBX 材质导入方式: {path}");
        }

        AssetDatabase.SaveAssets();
        AssetDatabase.Refresh();
    }
}