using System;
using UnityEngine;

public class NoiseSystem : MonoBehaviour
{
    public static NoiseSystem Instance { get; private set; }

    [SerializeField] private bool _debugMode = false;
    [SerializeField] private LayerMask _enemyLayer;

    public event EventHandler<NoiseEventArgs> OnNoiseEmitted;

    private void Awake()
    {
        // Singleton pattern
        if (Instance != null && Instance != this)
        {
            Destroy(gameObject);
            return;
        }

        Instance = this;
    }

    public void Emit(Vector3 position, float radius)
    {
        if (_debugMode)
            Debug.Log($"[NoiseSystem] Noise emitted at {position} with radius {radius}");

        OnNoiseEmitted?.Invoke(this, new NoiseEventArgs { Position = position, Radius = radius });

        // Find all enemies in range and notify them
        Collider2D[] hitColliders = Physics2D.OverlapCircleAll(position, radius, _enemyLayer);

        foreach (Collider2D collider in hitColliders)
        {
            var enemy = collider.GetComponent<EnemyAI>();
            if (enemy != null)
            {
                enemy.OnNoise(position);

                if (_debugMode)
                    Debug.Log($"[NoiseSystem] Notified enemy at {collider.transform.position}");
            }
        }
    }

    private void OnDrawGizmosSelected()
    {
        // Debug visualization in editor
        if (!_debugMode)
            return;

        Gizmos.color = Color.yellow;
        // This would need to be called from a debug script to visualize noise spheres
    }
}

public class NoiseEventArgs : EventArgs
{
    public Vector3 Position { get; set; }
    public float Radius { get; set; }
}