namespace Nerfed.Runtime.Audio;

/// <summary>
/// Plays back a series of AudioBuffers in sequence. Set the OnSoundNeeded callback to add AudioBuffers dynamically.
/// </summary>
public class SoundSequence : UpdatingSourceVoice, IPoolable<SoundSequence>
{
	public int NeedSoundThreshold = 0;
	public delegate void OnSoundNeededFunc();
	public OnSoundNeededFunc OnSoundNeeded;

	public SoundSequence(AudioDevice device, Format format) : base(device, format)
	{

		}

	public SoundSequence(AudioDevice device, AudioBuffer templateSound) : base(device, templateSound.Format)
	{

		}

	public static SoundSequence Create(AudioDevice device, Format format)
	{
			return new SoundSequence(device, format);
		}

	public override void Update()
	{
			lock (StateLock)
			{
				if (State != SoundState.Playing) { return; }

				if (NeedSoundThreshold > 0)
				{
					int buffersNeeded = NeedSoundThreshold - (int) BuffersQueued;

					for (int i = 0; i < buffersNeeded; i += 1)
					{
						if (OnSoundNeeded != null)
						{
							OnSoundNeeded();
						}
					}
				}
			}
		}

	public void EnqueueSound(AudioBuffer buffer)
	{
#if DEBUG
		if (!(buffer.Format == Format))
		{
			Log.Warning("Sound sequence audio format mismatch!");
			return;
		}
#endif

		lock (StateLock)
		{
			Submit(buffer.ToFAudioBuffer());
		}
	}
}