using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System;

public class AudioManager : MonoBehaviour
{
    public GameObject Audiomanager;

    public static AudioManager Main
    {
        get
        {
            return GameObject.Find("AudioManager").GetComponent<AudioManager>();
        }
    }

    public HashSet<Sound> sounds =
       new HashSet<Sound>();

    /// Creates a new sound, registers it, gives it the properties specified, and starts playing it
    public Sound PlayNewSound(string soundName, bool loop = false, bool interrupts = false, Action<Sound> callback = null)
    {
        Sound sound = NewSound(soundName, loop, interrupts, callback);
        sound.playing = true;
        return sound;
    }

    /// Creates a new sound, registers it, and gives it the properties specified
    public Sound NewSound(string soundName, bool loop = false, bool interrupts = false, Action<Sound> callback = null)
    {
        Sound sound = new Sound(soundName);
        RegisterSound(sound);
        sound.loop = loop;
        sound.interrupts = interrupts;
        sound.callback = callback;
        return sound;
    }

    /// Registers a sound with the AudioManager and gives it an AudioSource if necessary
    /// You should probably avoid calling this function directly and just use 
    /// NewSound and PlayNewSound instead
    public void RegisterSound(Sound sound)
    {
        sounds.Add(sound);
        sound.audioManager = this;
        if (sound.source == null)
        {
            AudioSource source = gameObject.AddComponent<AudioSource>();
            source.clip = sound.clip;
            sound.source = source;
        }
    }

    private void Update()
    {
        sounds.ToList().ForEach(sound => {
            sound.Update();
        });
    }
}