using System;
using System.Threading.Tasks;
using UnityEngine;
using UnityEngine.SceneManagement;

namespace DDD
{
    public enum SceneName
    {
        Title = 0,
        Restaurant = 1
    }
    
    public class GameManager : Singleton<GameManager>
    {
        public async Task ChangeScene(SceneName sceneName)
        {
            string previousSceneName = SceneManager.GetActiveScene().name;
            string changeSceneName;

            switch (sceneName)
            {
                case SceneName.Title:
                    changeSceneName = "00.Title";
                    break;
                case SceneName.Restaurant:
                    changeSceneName = "01.Restaurant";
                    break;
                default:
                    throw new ArgumentOutOfRangeException(nameof(sceneName), sceneName, null);
            }

            await UiManager.Instance.FadeIn();
            
            AsyncOperation loadSceneAsync = SceneManager.LoadSceneAsync(changeSceneName, LoadSceneMode.Additive);
            while (loadSceneAsync is { isDone: false })
                await Task.Yield();
            
            // 씬 로딩 후 초기화 작업
            UiManager.Instance.ChangeScene(previousSceneName, changeSceneName);
            CameraManager.Instance.ChangeScene(changeSceneName);
            KeyManager.Instance.ChangeScene(changeSceneName);
            
            await Task.Delay(1000);
            
            await UiManager.Instance.FadeOut();
            
            Debug.Log($"{changeSceneName} 씬으로 전환 완료");
        }
        
        public void ChangeSceneByIndex(int index)
        {
            var sceneEnum = (SceneName)index;
            _ = ChangeScene(sceneEnum);
        }
    }
}