using System;
using System.Collections;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.Video;

public class GameManager : MonoBehaviour
{

    #region Singleton
    public static GameManager singleton;
    private void Awake()
    {
        if (singleton == null)
        {
            singleton = this;
        }
        else if (singleton != this)
        {
            Destroy(gameObject);
        }
    }

    #endregion


    public bool skipIntro = false;
    public VideoAsset introClip;
    public VideoAsset fullMovie;

    public VideoAsset endingClip;

    public bool IsPlayingIntro { get; private set; }

    public FloatingLabel floatingLabelPrefab;

    public bool CanPlay => CanvasManager.singleton.CanPlay && !(IsPlayingIntro || CameraManager.singleton.isPlayingVideo);

    public SoundManager soundManager;

    public bool AllUnlocked { get; set; }

    public VideoDownloader VideoDownloader { get; private set; }

    public GameObject endingItem;

    public int endingThreshold = 7;

    public SchoolManager mainScene;

    void Start()
    {
        soundManager = GetComponent<SoundManager>();
        VideoDownloader = GetComponent<VideoDownloader>();
#if !UNITY_EDITOR
        skipIntro = false;
#endif 
    }

    // Called by UI Button
    public void OnPressPlay()
    {
        if (skipIntro)
        {
            StartCoroutine(StartGame());
        }
        else
        {
            Intro();
        }
    }

    private IEnumerator StartGame()
    {
        CanvasManager.singleton.StartGame();
        CameraManager.singleton.ShowDefaultTexture();
        IsPlayingIntro = false;
        if (!AllUnlocked) CameraManager.singleton.UpdateArrows();
        if (!skipIntro)
        {
            CameraManager.singleton.MoveRight();
            yield return new WaitForSeconds(1f);
            CameraManager.singleton.UpdateArrows();
        }
    }

    private void Intro()
    {
        Fader.Fade(() =>
        {
            CanvasManager.singleton.titleScreen.SetActive(false);
            CameraManager.singleton.PlayVideo(introClip, () =>
            {
                StartCoroutine(StartGame());
            });
        }, null, false);
    }

    public void PlayFullMovie()
    {
        CanvasManager.singleton.Warning("Le Film Dure 21 minutes       Continuer ?",
        () =>
        {
            CameraManager.singleton.PlayVideo(fullMovie, () =>
            {
                CameraManager.singleton.MoveToMainScene();
            });
        });
    }

    public void RestartGameWithWarning()
    {
        CanvasManager.singleton.Warning("êtes vous sûr de quitter ?", RestartGame);
    }



    public void RestartGame()
    {
        VideoPlayManager.Reset();
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    public void UnlockAll()
    {
        if (AllUnlocked) return;
        AllUnlocked = true;
        CameraManager.singleton.UnlockAll();
    }

    public void OnEndVideo()
    {
        if (VideoPlayManager.TotalVideoPlays >= endingThreshold)
        {
            if (CameraManager.singleton.CurrentSubScene == null)
            {
                CameraManager.singleton.GoToEnding();
            }
        }
    }

    public void PlayEndVideo()
    {
        CanvasManager.singleton.Warning("Terminer la révolution ?",
        () =>
        {
            CameraManager.singleton.ToggleEnding();
            CameraManager.singleton.PlayVideo(endingClip, () =>
            {
                RestartGame();
            });
        });
    }

    public void PlayCredits()
    {
        CameraManager.singleton.PlayVideo(endingClip, () =>
        {
            RestartGame();
        }, 2 * 60); // Credits start at 2 minutes of endingClip
    }

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Q))
        {
            Application.Quit();
        }
        else if (Input.GetKeyDown(KeyCode.R))
        {
            RestartGame();
        }
        else if (Input.GetKeyDown(KeyCode.U))
        {
            UnlockAll();
        }
        else if (Input.GetKeyDown(KeyCode.E))
        {
            PlayEndVideo();
        }
    }
}