using System;
using System.Collections;
using System.Collections.Generic;
using BigSpace.XRCore.Base;
using UnityEngine;
using UnityEngine.Video;


namespace BigSpace.XRCore.GameMode
{
    public class GameModeMgr : MonoSingleton<GameModeMgr>
    {
        private IGameMode _gameMode;

        [SerializeField]private bool _isOffline = true;
        public bool IsOffline => _isOffline;
        public int NextSceneId = 10000;
        
        [SerializeField] private VideoPlayer videoPlayer;
        private bool initialized;
        private bool videoHidden;
        
        private void Start()
        {
            //Application.targetFrameRate = 30;
            SceneMgr.Instance.nowSceneId = NextSceneId;
            StartCoroutine(PlayVideoThenInitGameMode());

            //PicoApi.InitEnterpriseService();
        }

        private IEnumerator PlayVideoThenInitGameMode()
        {
            if (videoPlayer == null && !TryGetComponent(out videoPlayer))
            {
                Debug.Log("[GameModeMgr] No VideoPlayer, init directly.");
                InitGameMode();
                yield break;
            }

            videoPlayer.loopPointReached += OnVideoFinished;
            videoPlayer.errorReceived += OnVideoError;
            Debug.Log("[GameModeMgr] Video events registered, preparing.");

            if (!videoPlayer.isPrepared)
            {
                videoPlayer.Prepare();
                while (!videoPlayer.isPrepared)
                {
                    yield return null;
                }
            }

            Debug.Log("[GameModeMgr] Video prepared, play.");
            videoPlayer.Play();

            float waitToStart = 2f;
            float elapsed = 0f;
            while (!videoPlayer.isPlaying && elapsed < waitToStart)
            {
                elapsed += Time.deltaTime;
                yield return null;
            }

            float maxDuration = videoPlayer.clip != null ? (float)videoPlayer.clip.length + 1f : 5f;
            elapsed = 0f;
            while (videoPlayer.isPlaying && elapsed < maxDuration)
            {
                elapsed += Time.deltaTime;
                yield return null;
            }

            Debug.Log("[GameModeMgr] Video finished by coroutine.");
            InitGameMode();
        }

        private void OnVideoFinished(VideoPlayer _)
        {
            Debug.Log("[GameModeMgr] Video finished event.");
            InitGameMode();
        }

        private void OnVideoError(VideoPlayer _, string __)
        {
            Debug.LogWarning("[GameModeMgr] Video error, init directly.");
            InitGameMode();
        }

        private void HideVideoPlayer()
        {
            if (videoHidden || videoPlayer == null)
            {
                return;
            }

            videoHidden = true;
            try
            {
                if (videoPlayer.isPlaying)
                {
                    videoPlayer.Stop();
                }
                videoPlayer.gameObject.SetActive(false);
            }
            catch
            {
            }
        }
        
        private void InitGameMode()
        {
          if (initialized)
          {
              return;
          }
          initialized = true;
          HideVideoPlayer();
          if (videoPlayer != null)
          {
              videoPlayer.loopPointReached -= OnVideoFinished;
              videoPlayer.errorReceived -= OnVideoError;
          }

          _gameMode = new OfflineMode();
          _gameMode.Initialize();
        }
    }
}