namespace DaggerFramework.Audio
{
    public abstract class AudioBackend : IDisposable
    {
        public abstract void Initialize();
        public abstract void Update();
        public abstract void Shutdown();
        // BUS
        public abstract void CreateBus(string busName);
        public abstract void SetBusVolume(string busName, float volume);
        public abstract float GetBusVolume(string busName);

        // SOUND
        public abstract void PlaySound(Sound sound, string bus = "Master", float pitch = 1.0f, float volume = 1.0f);
        public void PlaySound(Sound sound, string bus = "Master") => PlaySound(sound, bus, default, default);
        public void PlaySoundVariation(Sound sound, string bus = "Master", float pitchVariation = 0.1f, float volume = 1.0f)
        {
            var maxPitch = 1.0f + pitchVariation;
            var minPitch = 1.0f - pitchVariation;

            var pitch = (float)_random.NextDouble() * (maxPitch - minPitch) + minPitch;
            PlaySound(sound, bus, pitch, volume);
        }

        // EFFECTS
        public abstract void AddBusEffect<T>(T effect, string bus = "Master") where T : AudioEffect;

        public void Dispose()
        {
            Shutdown();
        }

        private LehmerRandom _random = new LehmerRandom();
    }
}