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

public class StreamingleAvatarExporter : EditorWindow
{
    private GameObject targetAvatar;
    private Vector2 scrollPosition;
    private Dictionary<SkinnedMeshRenderer, string> meshTags = new Dictionary<SkinnedMeshRenderer, string>();
    
    private string[] tagOptions = new string[] { "None", "Clothes", "Hair", "Face", "Body", "Other" };
    private Color[] tagColors = new Color[] {
        Color.gray,      // None
        Color.blue,      // Clothes
        Color.yellow,    // Hair
        Color.green,     // Face
        Color.red,      // Body
        Color.magenta   // Other
    };

    [MenuItem("Tools/Streamingle/Avatar Exporter")]
    public static void ShowWindow()
    {
        GetWindow<StreamingleAvatarExporter>("Streamingle Exporter");
    }

    private void OnGUI()
    {
        GUILayout.Label("Streamingle Avatar Exporter", EditorStyles.boldLabel);
        
        EditorGUI.BeginChangeCheck();
        GameObject newTarget = (GameObject)EditorGUILayout.ObjectField("Avatar Object", targetAvatar, typeof(GameObject), true);
        
        if (newTarget != targetAvatar)
        {
            targetAvatar = newTarget;
            if (targetAvatar != null)
            {
                InitializeMeshList();
            }
            else
            {
                meshTags.Clear();
            }
        }

        if (targetAvatar != null)
        {
            GUILayout.Space(10);
            EditorGUILayout.LabelField("메쉬 태그 설정", EditorStyles.boldLabel);
            
            scrollPosition = EditorGUILayout.BeginScrollView(scrollPosition);
            
            foreach (var pair in meshTags.ToList())
            {
                SkinnedMeshRenderer renderer = pair.Key;
                if (renderer == null) continue;

                EditorGUILayout.BeginVertical("box");
                
                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.LabelField($"메쉬: {renderer.name}", EditorStyles.boldLabel);
                EditorGUILayout.EndHorizontal();

                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.LabelField($"버텍스: {renderer.sharedMesh.vertexCount}", GUILayout.Width(120));
                EditorGUILayout.LabelField($"블렌드쉐입: {renderer.sharedMesh.blendShapeCount}", GUILayout.Width(120));
                EditorGUILayout.EndHorizontal();

                int currentIndex = System.Array.IndexOf(tagOptions, pair.Value);
                int newIndex = EditorGUILayout.Popup("태그", currentIndex, tagOptions);
                
                if (newIndex != currentIndex)
                {
                    meshTags[renderer] = tagOptions[newIndex];
                }

                EditorGUI.DrawRect(EditorGUILayout.GetControlRect(false, 3), tagColors[newIndex]);
                
                EditorGUILayout.EndVertical();
                GUILayout.Space(5);
            }
            
            EditorGUILayout.EndScrollView();

            if (GUILayout.Button("Export Avatar"))
            {
                ExportAvatar();
            }
        }
    }

    private void InitializeMeshList()
    {
        meshTags.Clear();
        var renderers = targetAvatar.GetComponentsInChildren<SkinnedMeshRenderer>(true);
        foreach (var renderer in renderers)
        {
            meshTags[renderer] = "None";
        }
    }

    private void ExportAvatar()
    {
        if (targetAvatar == null)
        {
            EditorUtility.DisplayDialog("Error", "Please select an avatar first!", "OK");
            return;
        }

        string fullpath = EditorUtility.SaveFilePanel(
            "Export Streamingle Avatar",
            ".",
            targetAvatar.name,
            "streamingle"
        );

        if (string.IsNullOrEmpty(fullpath))
            return;

        string filename = Path.GetFileName(fullpath);
        string prefabPath = "Assets/StreamingleAvatarTemp.prefab";

        try
        {
            // 컴파일 에러 체크
            if (!string.IsNullOrEmpty(AssetDatabase.GetAssetPath(targetAvatar)))
            {
                AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(targetAvatar), ImportAssetOptions.ForceUpdate);
            }

            // 프리팹 생성 전 임시 폴더 정리
            string tempPath = Path.Combine(Application.dataPath, "../Temp/AssetBundles");
            if (Directory.Exists(tempPath))
            {
                Directory.Delete(tempPath, true);
            }
            Directory.CreateDirectory(tempPath);

            // 프리팹 생성
            bool succeededPack = false;
            GameObject prefabAsset = PrefabUtility.SaveAsPrefabAsset(targetAvatar, prefabPath, out succeededPack);
            
            if (!succeededPack || prefabAsset == null)
            {
                throw new System.Exception("프리팹 생성 실패");
            }

            // AssetDatabase 새로고침 및 대기
            AssetDatabase.Refresh(ImportAssetOptions.ForceUpdate);
            System.Threading.Thread.Sleep(1000); // 새로고침 대기

            // AssetBundle 설정
            AssetBundleBuild bundleBuild = new AssetBundleBuild
            {
                assetBundleName = filename,
                assetNames = new string[] { prefabPath }
            };

            // 빌드 옵션 설정
            BuildAssetBundleOptions options = BuildAssetBundleOptions.None;

            // AssetBundle 빌드
            BuildPipeline.BuildAssetBundles(
                tempPath, 
                new AssetBundleBuild[] { bundleBuild }, 
                options, 
                EditorUserBuildSettings.activeBuildTarget
            );

            // 결과 파일 이동
            string bundlePath = Path.Combine(tempPath, filename);
            if (File.Exists(bundlePath))
            {
                if (File.Exists(fullpath))
                    File.Delete(fullpath);
                
                File.Copy(bundlePath, fullpath, true);
            }
            else
            {
                throw new System.Exception($"AssetBundle 파일을 찾을 수 없습니다. 경로: {bundlePath}");
            }

            EditorUtility.DisplayDialog("Export", "아바타 출력 완료!", "OK");
        }
        catch (System.Exception e)
        {
            Debug.LogError($"Export failed: {e.Message}");
            EditorUtility.DisplayDialog("Error", "아바타 출력 실패! 콘솔을 확인해주세요.", "OK");
        }
        finally
        {
            AssetDatabase.DeleteAsset(prefabPath);
            if (File.Exists(prefabPath))
                File.Delete(prefabPath);
        }
    }
}

// 태그 설정을 위한 별도의 윈도우
public class TagSetupWindow : EditorWindow
{
    private GameObject targetAvatar;
    private Vector2 scrollPosition;
    private string[] availableTags = new string[] { "Clothes", "Hair", "Face", "Body", "Other" };

    public void Initialize(GameObject avatar)
    {
        targetAvatar = avatar;
        titleContent = new GUIContent("태그 설정");
    }

    private void OnGUI()
    {
        if (targetAvatar == null) return;

        GUILayout.Label("아바타 파츠 태그 설정", EditorStyles.boldLabel);
        
        scrollPosition = EditorGUILayout.BeginScrollView(scrollPosition);
        
        Transform[] children = targetAvatar.GetComponentsInChildren<Transform>(true);
        foreach (Transform child in children)
        {
            if (child == targetAvatar.transform) continue;

            EditorGUILayout.BeginHorizontal();
            EditorGUILayout.LabelField(child.name);
            
            string currentTag = child.tag;
            int tagIndex = System.Array.IndexOf(availableTags, currentTag);
            int newTagIndex = EditorGUILayout.Popup(tagIndex, availableTags);
            
            if (newTagIndex != tagIndex)
            {
                child.tag = availableTags[newTagIndex];
                EditorUtility.SetDirty(child.gameObject);
            }
            
            EditorGUILayout.EndHorizontal();
        }
        
        EditorGUILayout.EndScrollView();
    }
}