using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.Serialization;

namespace DDD
{
    public enum SceneType
    {
        Title = 0,
        Restaurant = 1
    }
    
    public class GameManager : Singleton<GameManager>
    {
        private static readonly Dictionary<SceneType, string> SceneTypeDict = new()
        {
            { SceneType.Title, "00.Title" },
            { SceneType.Restaurant, "01.Restaurant" }
        };
        
        public SceneType CurrentSceneType { get; private set; }

        private void Start()
        {
            CurrentSceneType = SceneType.Title;
        }

        public async Task ChangeScene(SceneType sceneType)
        {
            if (!SceneTypeDict.TryGetValue(sceneType, out string changeSceneName))
            {
                Debug.LogError($"[GameManager] 정의되지 않은 SceneType: {sceneType}");
                return;
            }

            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(CurrentSceneType, sceneType);
            CameraManager.Instance.ChangeScene(sceneType);
            KeyManager.Instance.ChangeScene(sceneType);

            CurrentSceneType = sceneType;
            
            await Task.Delay(1000);
            await UiManager.Instance.FadeOut();
            
            Debug.Log($"{changeSceneName} 씬으로 전환 완료");
        }
        
        public void ChangeSceneByIndex(int index)
        {
            var sceneEnum = (SceneType)index;
            _ = ChangeScene(sceneEnum);
        }
    }
}