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

namespace BFEditor.Resource
{	
	public class MaterialTools
	{
	    /// <summary>
	    /// 删除冗余属性
	    /// </summary>
	    public static void DeleteOverProperty(string matPath)
	    {
	        var mat = AssetDatabase.LoadAssetAtPath<Material>(matPath);
	        if (mat != null)
	        {
	            var matInfo = new SerializedObject(mat);
	            var property = matInfo.FindProperty("m_SavedProperties");
	
	            property.Next(true);
	
	            do
	            {
	                if (!property.isArray)
	                {
	                    continue;
	                }
	
	                for (var i = property.arraySize - 1; i >= 0; --i)
	                {
	                    var p1 = property.GetArrayElementAtIndex(i);
	                    if (p1.isArray)
	                    {
	                        for (var j = p1.arraySize - 1; j >= 0; --j)
	                        {
	                            var p2 = p1.GetArrayElementAtIndex(j);
	                            var val = p2.FindPropertyRelative("first");
	
	                            if (!mat.HasProperty(val.stringValue))
	                            {
	                                Debug.Log(matPath + " 删除冗余属性 " + val.stringValue);
	                                p1.DeleteArrayElementAtIndex(j);
	                            }
	                        }
	                    }
	                    else
	                    {
	                        var val = p1.FindPropertyRelative("first");
	                        if (!mat.HasProperty(val.stringValue))
	                        {
	                            Debug.Log(matPath + " 删除冗余属性 " + val.stringValue);
	                            property.DeleteArrayElementAtIndex(i);
	                        }
	                    }
	                }
	            }
	            while (property.Next(false));
	
	            matInfo.ApplyModifiedProperties();
	        }
	    }
	
	    /// <summary>
	    /// 删除冗余属性
	    /// </summary>
	    public static void DeleteAllMaterialOverProperty()
	    {
	        var guids = AssetDatabase.FindAssets("t:material", new string[] {ResourceProcessConfig.ARTS_FOLDER_PATH });
	
	        var total = guids.Length;
	
	        var i = 1;
	        foreach (var guid in guids)
	        {
	            var path = AssetDatabase.GUIDToAssetPath(guid);
	            EditorUtility.DisplayProgressBar("材质检查", path, (float)i / total);
	            DeleteOverProperty(path);
	            i++;
	        }
	
	        EditorUtility.ClearProgressBar();
	        AssetDatabase.SaveAssets();
	        AssetDatabase.Refresh();
	    }
	
	    /// <summary>
	    /// 清理fbx默认材质
	    /// </summary>
	    public static void ClearFbxDefaultMaterial(bool needDialog = false)
	    {
	        Debug.Log("[bfinfo]清理fbx默认材质...");
	        var errorList = new List<string>();
	        var pathList = BFEditorUtils.GetAssetPathsWithSuffix(ResourceProcessConfig.ARTS_FOLDER_PATH, ".fbx");
	        var count = 0;
	        var totalCount = pathList.Count;
	
	        foreach (var path in pathList)
	        {
	            count++;
	            EditorUtility.DisplayProgressBar("正在检查清理fbx默认材质", path, (float)count / totalCount);
	            var obj = AssetDatabase.LoadAssetAtPath<GameObject>(path);
	            var renderers = obj.GetComponentsInChildren<Renderer>(true);
	            foreach (var renderer in renderers)
	            {
	                foreach (var mat in renderer.sharedMaterials)
	                {
	                    if (mat != null)
	                    {
	                        Debug.LogError("需要清理默认材质 " + path);
	                        errorList.Add(path);
	                    }
	                }
	            }
	        }
	
	        EditorUtility.ClearProgressBar();
	
	        foreach (var path in errorList)
	        {
	            AssetDatabase.ImportAsset(path);  // ModelImporter OnPostprocessModel 清空sharedMaterials
	        }
	
	        if (needDialog)
	        {
	            EditorUtility.DisplayDialog("完成", string.Format("共清理{0}个fbx", errorList.Count), "ok");
	        }
	    }
	}
}