sizes.mjs

export function getNumericFrameSize(frameSize) {
  const headerSize = 10;
  const encodingSize = 1;

  return headerSize + encodingSize + frameSize;
}

export function getStringFrameSize(frameSize) {
  const headerSize = 10;
  const encodingSize = 1;
  const bomSize = 2;
  const frameUtf16Size = frameSize * 2;

  return headerSize + encodingSize + bomSize + frameUtf16Size;
}

export function getLyricsFrameSize(descriptionSize, lyricsSize) {
  const headerSize = 10;
  const encodingSize = 1;
  const languageSize = 3;
  const bomSize = 2;
  const descriptionUtf16Size = descriptionSize * 2;
  const separatorSize = 2;
  const lyricsUtf16Size = lyricsSize * 2;

  return (
    headerSize +
    encodingSize +
    languageSize +
    bomSize +
    descriptionUtf16Size +
    separatorSize +
    bomSize +
    lyricsUtf16Size
  );
}

export function getPictureFrameSize(
  pictureSize,
  mimeTypeSize,
  descriptionSize,
  useUnicodeEncoding,
) {
  const headerSize = 10;
  const encodingSize = 1;
  const separatorSize = 1;
  const pictureTypeSize = 1;
  const bomSize = 2;
  const encodedDescriptionSize = useUnicodeEncoding
    ? bomSize + (descriptionSize + separatorSize) * 2
    : descriptionSize + separatorSize;

  return (
    headerSize +
    encodingSize +
    mimeTypeSize +
    separatorSize +
    pictureTypeSize +
    encodedDescriptionSize +
    pictureSize
  );
}

export function getCommentFrameSize(descriptionSize, textSize) {
  const headerSize = 10;
  const encodingSize = 1;
  const languageSize = 3;
  const bomSize = 2;
  const descriptionUtf16Size = descriptionSize * 2;
  const separatorSize = 2;
  const textUtf16Size = textSize * 2;

  return (
    headerSize +
    encodingSize +
    languageSize +
    bomSize +
    descriptionUtf16Size +
    separatorSize +
    bomSize +
    textUtf16Size
  );
}

export function getPrivateFrameSize(idSize, dataSize) {
  const headerSize = 10;
  const separatorSize = 1;

  return headerSize + idSize + separatorSize + dataSize;
}

export function getUserStringFrameSize(descriptionSize, valueSize) {
  const headerSize = 10;
  const encodingSize = 1;
  const bomSize = 2;
  const descriptionUtf16Size = descriptionSize * 2;
  const separatorSize = 2;
  const valueUtf16Size = valueSize * 2;

  return (
    headerSize +
    encodingSize +
    bomSize +
    descriptionUtf16Size +
    separatorSize +
    bomSize +
    valueUtf16Size
  );
}

export function getUrlLinkFrameSize(urlSize) {
  const headerSize = 10;

  return headerSize + urlSize;
}

export function getPairedTextFrameSize(list) {
  const headerSize = 10;
  const encodingSize = 1;
  const bomSize = 2;
  const separatorSize = 2;
  let encodedListSize = 0;
  list.forEach((pair) => {
    encodedListSize +=
      bomSize +
      pair[0].length * 2 +
      separatorSize +
      bomSize +
      pair[1].length * 2 +
      separatorSize;
  });

  return headerSize + encodingSize + encodedListSize;
}

export function getSynchronisedLyricsFrameSize(lyrics, descriptionSize) {
  const headerSize = 10;
  const encodingSize = 1;
  const languageSize = 3;
  const timestampFormatSize = 1;
  const contentTypeSize = 1;
  const bomSize = 2;
  const descriptionUtf16Size = descriptionSize * 2;
  const separatorSize = 2;
  const timestampSize = 4;
  let encodedLyricsSize = 0;
  lyrics.forEach((line) => {
    encodedLyricsSize +=
      bomSize + line[0].length * 2 + separatorSize + timestampSize;
  });

  return (
    headerSize +
    encodingSize +
    languageSize +
    timestampFormatSize +
    contentTypeSize +
    bomSize +
    descriptionUtf16Size +
    separatorSize +
    encodedLyricsSize
  );
}