// Copyright (c) 2023 Dominic Masters
// 
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT

#pragma once
#include "../Asset.hpp"
#include "asset/AssetLoader.hpp"

namespace Dawn {
  class AudioSource;

  enum AudioAssetLoadState {
    AUDIO_ASSET_LOAD_STATE_INITIAL,
    AUDIO_ASSET_LOAD_STATE_OPENING,
    AUDIO_ASSET_LOAD_STATE_READING_HEADER,
    AUDIO_ASSET_LOAD_STATE_READING_CHANNEL_COUNT,
    AUDIO_ASSET_LOAD_STATE_READING_SAMPLE_RATE,
    AUDIO_ASSET_LOAD_STATE_READING_SAMPLES_PER_CHANNEL,
    AUDIO_ASSET_LOAD_STATE_READING_DATA_LENGTH,
    AUDIO_ASSET_LOAD_STATE_DATA_READ,
    AUDIO_ASSET_LOAD_STATE_COMPLETE
  };

  class AudioAsset : public Asset {
    protected:
      AssetLoader loader;
      enum AudioAssetLoadState state = AUDIO_ASSET_LOAD_STATE_INITIAL;

      int32_t channelCount;
      uint32_t sampleRate;
      int32_t samplesPerChannel;
      size_t bufferSize;
      size_t bufferStart;
      size_t frameSize;

    public:
      AudioAsset(const std::string name);

      void updateSync() override;
      void updateAsync() override;

      friend class AudioSource;
  };
}