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

public class ScenePostProcessor : PostProcessor
{
    /// <summary>
    /// 原场景
    /// </summary>
    private Scene Scene { get; set; }

    /// <summary>
    /// 后处理场景
    /// </summary>
    private Scene ClonedScene { get; set; }

    /// <summary>
    /// 后处理场景根路径
    /// </summary>
    private const string SCENE_POSTPROCESS_DIR = "Assets/Art_Out/AutoGen/PostProcessScenes";

    /// <summary>
    /// 场景后处理根文件路径
    /// </summary>
    protected override string ResourcesBaseDir => SCENE_POSTPROCESS_DIR;

    /// <summary>
    /// 后处理场景父路径 
    /// </summary>
    protected override string PostProcessFolderName => Path.GetFileNameWithoutExtension(scenePath.Replace("/", "_"));

    /// <summary>
    /// 原场景资源
    /// </summary>
    protected override Object AssetToPostProcess => AssetDatabase.LoadAssetAtPath<SceneAsset>(scenePath);

    /// <summary>
    /// 后处理场景路径
    /// </summary>
    protected override string OutputAssetPath => $"{ProcessedResourceDir}/{sceneName}_{SCENE_POST_PROCESS_NAME}.unity";

    /// <summary>
    /// 原场景路径
    /// </summary>
    private string scenePath;

    /// <summary>
    /// 原场景名字
    /// </summary>
    private string sceneName;

    protected override void Init(PostProcessInstructor postProcessInstructor)
    {
        base.Init(postProcessInstructor);
        Scene = postProcessInstructor.gameObject.scene;
        // 保存场景名字及路径
        scenePath = Scene.path;
        sceneName = Scene.name;
    }

    protected override PostProcessInstructor Clone()
    {
        var sceneCount = SceneManager.sceneCount;
        for (int i = 0; i < sceneCount; i++)
        {
            var scene = SceneManager.GetSceneAt(i);
            if (scene.name.Contains(SCENE_POST_PROCESS_NAME))
                EditorSceneManager.CloseScene(scene, true);
        }

        AssetDatabase.CopyAsset(Scene.path, OutputAssetPath);
        AssetDatabase.Refresh();
        ClonedScene = EditorSceneManager.OpenScene(OutputAssetPath, OpenSceneMode.Additive);
        EditorSceneManager.MarkAllScenesDirty();
        var result = FindInstructorInScene(ClonedScene);

        // 关闭原始场景
        CloseOriginalScene();

        return result;
    }

    /// <summary>
    /// 关闭原始场景
    /// </summary>
    private void CloseOriginalScene()
    {
        try
        {
            if (SceneManager.sceneCount > 1)
            {
                Debug.Log($"关闭原始场景: {Scene.name}");
                EditorSceneManager.CloseScene(Scene, true);
            }
            else
            {
                Debug.LogWarning("只有一个场景打开，无法关闭原始场景，需要至少保留一个场景。");
            }
        }
        catch (System.Exception ex)
        {
            Debug.LogError($"关闭原始场景时出错: {ex.Message}");
        }
    }

    protected override void AfterAll(bool destroyAfterPostProcess)
    {
        EditorSceneManager.SaveOpenScenes();
        EditorUtil.AddPathToAddressable(ProcessedResourceDir, SCENE_ADDRESSABLE_GROUP);
        if (destroyAfterPostProcess)
            EditorSceneManager.CloseScene(ClonedScene, true);
        EditorGUIUtility.PingObject(AssetDatabase.LoadAssetAtPath<SceneAsset>(ClonedScene.path));
    }
}