Function processOgImage

apps/api/src/controllers/misc.controller.ts:186–221

(
  buffer: Buffer,
  originalUrl?: string,
  contentType?: string,
)

// Process OG image with Sharp (resize to 300px width)
async function processOgImage(
  buffer: Buffer,
  originalUrl?: string,
  contentType?: string,
): Promise<Buffer> {
  // If buffer is small enough, return it as-is
  if (buffer.length < 10000) {
    logger.debug(
      { originalUrl, bufferSize: buffer.length },
      'Serving OG image directly without processing',
    );
    return buffer;
  }

  try {
    // For OG images, process with Sharp to 300px width, maintaining aspect ratio
    return await sharp(buffer)
      .resize(300, null, {
        fit: 'inside',
        withoutEnlargement: true,
      })
      .png()
      .toBuffer();
  } catch (error) {
    logger.warn(
      {
        err: error,
        originalUrl,
        bufferSize: buffer.length,
      },
      'Sharp failed to process OG image, trying fallback',
    );

    throw error;
  }
}

// Check if URL is a direct image
function isDirectImage(url: URL): boolean {