using System.Diagnostics;
using System.Linq;
using UnityEngine;
using System.Collections;
using Debug = UnityEngine.Debug;

public class AiSound : MonoBehaviour {
    public AudioSource audio;
    private bool _isPlaying;
    private float _startTime;
    public float rangeScale = 1.0f;
    public float StartTime {
        get { return _startTime; }
    }
    public bool IsPlaying {
        get { return _isPlaying; }
    }
    
	
	void Start () {
	
	}

    private void BroadcastBeginPlaying() {
        _startTime = Time.time;

        var overlapped = Physics2D.OverlapCircleAll(transform.position, audio.maxDistance * rangeScale);
        var listeners = overlapped.Select(v => v.gameObject.GetComponent<AiSoundListener>()).Where(v => v != null).Distinct().ToList();

        if (listeners.Count() != 0) {
            foreach (var listener in listeners) {
                listener.OnSoundStart(this);
                Debug.Log("Broadcast begin playing to object: " + listener.name);
            }
        }
        else {
            Debug.Log("AiSound started but no listeners found");
        }
       

      
    }

    private void BroadcastEndPlaying() {
        Debug.Log("EndPlaying");
    }
 
	
	void Update () {
	    if (audio != null) {
	        if (_isPlaying != audio.isPlaying) {
	            if (!_isPlaying) {
	                BroadcastBeginPlaying();
	            }
	            else {
	                BroadcastEndPlaying();
	            }
	        }
	        _isPlaying = audio.isPlaying;
	    }
	    else {
	        Debug.LogWarning("AiSound AudioSource is null!!!", this);
	    }
	}

    void OnDrawGizmos() {
        if (audio != null) {
            AdvancedGizmo.DrawCircle(transform.position, Vector3.forward, audio.maxDistance * rangeScale, Color.green);
        }
    }
}