Function extractUserFileTextContent

apps/sim/app/api/tools/file/manage/route.ts:309–335

(
  userFile: UserFile,
  requestId: string
)

 * raw text; binary files yield a short placeholder rather than corrupt bytes.
 */
const extractUserFileTextContent = async (
  userFile: UserFile,
  requestId: string
): Promise<string> => {
  const { buffer } = await downloadServableFileFromStorage(userFile, requestId, logger, {
    maxBytes: MAX_GET_CONTENT_FILE_BYTES,
  })

  const extension = getFileExtension(userFile.name)
  if (extension && isSupportedFileType(extension)) {
    try {
      const result = await parseBuffer(buffer, extension)
      return result.content ?? ''
    } catch (error) {
      logger.warn('Falling back to raw text after parser failure', {
        name: userFile.name,
        error: getErrorMessage(error, 'Unknown error'),
      })
    }
  }

  if (isLikelyTextBuffer(buffer)) {
    return buffer.toString('utf-8')
  }

  return `[Binary file: ${userFile.name} (${userFile.type || 'application/octet-stream'}, ${buffer.length} bytes). Cannot extract text content.]`
}

export const POST = withRouteHandler(async (request: NextRequest) => {
  const auth = await checkInternalAuth(request, { requireWorkflowId: false })