using UnityEngine;
using Unity.VRTemplate;



[RequireComponent(typeof(Collider))]
public class ArtWorkIntroController : MonoBehaviour
{
    [SerializeField] private AudioClip introClip;
    [SerializeField, Tooltip("对应的艺术品，例如 Painting7")]
    private GameObject artwork;

    private int collidersInside;
    private bool isFacing;
    private CalloutGazeController gazeController;
    private AudioManager audioManager;
    private bool audioManagerReady;

    private void Awake()
    {
        if (artwork != null)
        {
            gazeController = artwork.GetComponent<CalloutGazeController>();
        }
    }

    private void OnEnable()
    {
        if (audioManagerReady)
        {
            audioManager.NarrationEnabledChanged += OnNarrationEnabledChanged;
        }

        if (gazeController == null)
        {
            return;
        }

        gazeController.FacingEnteredEvent.AddListener(OnFacingEntered);
        gazeController.FacingExitedEvent.AddListener(OnFacingExited);
    }

    private void Start()
    {
        audioManager = AudioManager.Instance;
        audioManagerReady = true;
        audioManager.NarrationEnabledChanged += OnNarrationEnabledChanged;
        UpdatePlayback();
    }

    private void OnDisable()
    {
        if (audioManager != null)
        {
            audioManager.NarrationEnabledChanged -= OnNarrationEnabledChanged;
            audioManager.PauseArtWorkIntro(introClip);
        }

        collidersInside = 0;
        isFacing = false;

        if (gazeController != null)
        {
            gazeController.FacingEnteredEvent.RemoveListener(OnFacingEntered);
            gazeController.FacingExitedEvent.RemoveListener(OnFacingExited);
        }
    }

    private void OnTriggerEnter(Collider other)
    {
        if (!isActiveAndEnabled || !other.CompareTag("Player"))
        {
            return;
        }

        collidersInside++;
        UpdatePlayback();
    }

    private void OnTriggerExit(Collider other)
    {
        if (!isActiveAndEnabled || !other.CompareTag("Player"))
        {
            return;
        }

        collidersInside = Mathf.Max(0, collidersInside - 1);
        UpdatePlayback();
    }

    private void OnFacingEntered()
    {
        isFacing = true;
        UpdatePlayback();
    }

    private void OnFacingExited()
    {
        isFacing = false;
        UpdatePlayback();
    }

    private void OnNarrationEnabledChanged(bool isEnabled)
    {
        UpdatePlayback();
    }

    private void UpdatePlayback()
    {
        if (!audioManagerReady)
        {
            return;
        }

        if (audioManager.NarrationEnabled && collidersInside > 0 && isFacing)
        {
            audioManager.PlayArtWorkIntro(introClip);
        }
        else
        {
            audioManager.PauseArtWorkIntro(introClip);
        }
    }

    private void Reset()
    {
        GetComponent<Collider>().isTrigger = true;
    }
}