Function normalizeDownloadedMedia

ai/ai.ts:629–644

(
  downloaded: any,
)

const normalizeDownloadedMedia = async (
  downloaded: any,
): Promise<Buffer | null> => {
  if (!downloaded) return null;
  if (Buffer.isBuffer(downloaded)) return downloaded;
  if (typeof downloaded === "string" && downloaded.length > 0) {
    try {
      const stat = await fs.promises.stat(downloaded);
      if (!stat.isFile()) return null;
      return await fs.promises.readFile(downloaded);
    } catch {
      return null;
    }
  }
  return null;
};

const getImageExtensionForMime = (mimeType: string): string => {
  if (mimeType === "image/png") return ".png";
  if (mimeType === "image/webp") return ".webp";