using UnityEngine;
using UnityEngine.SceneManagement; 

public class StaircaseCurse : MonoBehaviour
{
    [Header("Don't Look Back Settings")]
    [Range(-1f, 1f)] public float killThreshold = -0.2f; 
    public GameObject blackScreenPanel; 

    [Header("Spooky Audio System")]
    [Tooltip("Drag empty GameObjects with AudioSources from around the map here")]
    public AudioSource[] environmentalSources; 
    public AudioClip[] scaryClips; // Whispers, footsteps, wood creaks
    [Tooltip("Minimum seconds between random noises")]
    public float minSoundDelay = 2f;
    [Tooltip("Maximum seconds between random noises")]
    public float maxSoundDelay = 5f;

    // Internal State
    private bool playerOnStairs = false;
    private Transform playerTransform;
    private bool isDead = false;
    private float soundTimer;

    void Start()
    {
        // Initialize timer
        soundTimer = Random.Range(minSoundDelay, maxSoundDelay);
    }

    void Update()
    {
        if (isDead || !playerOnStairs) return;

        // 1. CHECK LIGHTS & FACING DIRECTION
        // If lights are OFF, the curse is active
        if (GameManager.Instance != null && !GameManager.Instance.AreAnyLightsOn())
        {
            CheckPlayerFacing();
            
            // 2. HANDLE RANDOM AUDIO
            HandleAudio();
        }
    }

    void HandleAudio()
    {
        soundTimer -= Time.deltaTime;
        
        if (soundTimer <= 0)
        {
            PlayRandomSound();
            // Reset timer
            soundTimer = Random.Range(minSoundDelay, maxSoundDelay);
        }
    }

    void PlayRandomSound()
    {
        if (environmentalSources.Length == 0 || scaryClips.Length == 0) return;

        // 1. Pick a random sound
        AudioClip clip = scaryClips[Random.Range(0, scaryClips.Length)];

        // 2. Pick a random location (Source)
        AudioSource source = environmentalSources[Random.Range(0, environmentalSources.Length)];

        // 3. Play
        source.PlayOneShot(clip);
        Debug.Log($"Played sound from: {source.name}");
    }

    void CheckPlayerFacing()
    {
        // (Same logic as before)
        Vector3 stairsDir = transform.forward;
        Vector3 playerDir = playerTransform.forward;
        stairsDir.y = 0; playerDir.y = 0;
        stairsDir.Normalize(); playerDir.Normalize();

        if (Vector3.Dot(stairsDir, playerDir) < killThreshold)
        {
            TriggerGameOver();
        }
    }

    void TriggerGameOver()
    {
        isDead = true;
        if (blackScreenPanel != null) blackScreenPanel.SetActive(true);
        
        // Disable controls
        if (playerTransform.GetComponent<PlayerController>())
            playerTransform.GetComponent<PlayerController>().enabled = false;
            
        Invoke("RestartLevel", 3f);
    }

    void RestartLevel()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Player"))
        {
            playerOnStairs = true;
            playerTransform = other.transform;
            // Reset timer so a sound doesn't play INSTANTLY upon entering
            soundTimer = Random.Range(minSoundDelay, maxSoundDelay);
        }
    }

    void OnTriggerExit(Collider other)
    {
        if (other.CompareTag("Player")) playerOnStairs = false;
    }
}