package com.mojang.blaze3d.audio;

import java.nio.ByteBuffer;
import java.util.OptionalInt;
import javax.sound.sampled.AudioFormat;
import org.jspecify.annotations.Nullable;
import org.lwjgl.openal.AL10;

public class SoundBuffer {
	@Nullable
	private ByteBuffer data;
	private final AudioFormat format;
	private boolean hasAlBuffer;
	private int alBuffer;
	private final int size;

	public SoundBuffer(final ByteBuffer data, final AudioFormat format) {
		this.data = data;
		this.format = format;
		this.size = data.limit();
	}

	OptionalInt getAlBuffer() {
		if (!this.hasAlBuffer) {
			if (this.data == null) {
				return OptionalInt.empty();
			}

			int audioFormat = OpenAlUtil.audioFormatToOpenAl(this.format);
			int[] intBuffer = new int[1];
			AL10.alGenBuffers(intBuffer);
			if (OpenAlUtil.checkALError("Creating buffer")) {
				return OptionalInt.empty();
			}

			AL10.alBufferData(intBuffer[0], audioFormat, this.data, (int)this.format.getSampleRate());
			if (OpenAlUtil.checkALError("Assigning buffer data")) {
				return OptionalInt.empty();
			}

			this.alBuffer = intBuffer[0];
			this.hasAlBuffer = true;
			this.data = null;
		}

		return OptionalInt.of(this.alBuffer);
	}

	public void discardAlBuffer() {
		if (this.hasAlBuffer) {
			AL10.alDeleteBuffers(new int[]{this.alBuffer});
			if (OpenAlUtil.checkALError("Deleting stream buffers")) {
				return;
			}
		}

		this.hasAlBuffer = false;
	}

	public OptionalInt releaseAlBuffer() {
		OptionalInt result = this.getAlBuffer();
		this.hasAlBuffer = false;
		return result;
	}

	public AudioFormat format() {
		return this.format;
	}

	public int size() {
		return this.size;
	}

	public boolean isValid() {
		return this.data != null || this.hasAlBuffer;
	}
}