using System.Linq;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.SceneManagement;
namespace PhxhSDK.Res
{
    public class SceneHandle
    {
        public Scene Scene { get; private set; }

        public SceneHandle(Scene scene)
        {
            Scene = scene;
        }

        public Camera SceneMainCamera => GetSceneCamera();//GetSceneRootComponent<Camera>(Scene);

        public Volume SceneVolume => GetSceneVolume();

        public CameraRoot SceneCameraRoot => GetSceneRootComponent<CameraRoot>(Scene);
        
        public static T GetSceneRootComponent<T>(Scene scene) where T : Component
        {
            return scene.GetRootGameObjects().FirstOrDefault(root => root.GetComponent<T>() != null)?.GetComponent<T>();
        }

        public Camera GetSceneCamera()
        {
            if (SceneCameraRoot)
            {
                return SceneCameraRoot.Camera;
            }
            
            return GetSceneRootComponent<Camera>(Scene);
        }

        public Volume GetSceneVolume()
        {
            GameObject[] goRoots = Scene.GetRootGameObjects();
            foreach (GameObject goRoot in goRoots) // 临时获取方法
            {
                if (goRoot.name.Equals("Art"))
                    return goRoot.GetComponentInChildren<Volume>();
            }

            return null;
        }
    }
}