Function buildCompileErrorResponse

apps/sim/app/api/tools/latex/route.ts:170–214

* Maps a failed compile-service response to a JSON error response: 422 with * extracted TeX errors for compilation failures, 502 for anything unexpected.

(
  upstreamResponse: Response,
  requestId: string
)

 * extracted TeX errors for compilation failures, 502 for anything unexpected.
 */
async function buildCompileErrorResponse(
  upstreamResponse: Response,
  requestId: string
): Promise<NextResponse> {
  const errorBody = await readResponseJsonWithLimit(upstreamResponse, {
    maxBytes: MAX_ERROR_JSON_BYTES,
    label: 'LaTeX compile error response',
  }).catch(() => undefined)

  const errorRecord =
    typeof errorBody === 'object' && errorBody !== null
      ? (errorBody as Record<string, unknown>)
      : undefined
  const errorCode =
    typeof errorRecord?.error === 'string'
      ? truncate(errorRecord.error, MAX_ERROR_CODE_CHARS)
      : undefined
  const compilationErrors = extractCompilationErrors(errorRecord?.log_files)
  const details = compilationErrors ? `:\n${compilationErrors}` : ''

  const isCompilationFailure =
    upstreamResponse.status >= 400 &&
    upstreamResponse.status < 500 &&
    Boolean(errorCode || compilationErrors)

  if (isCompilationFailure) {
    logger.warn(`[${requestId}] LaTeX compilation failed`, {
      status: upstreamResponse.status,
      errorCode,
    })
    return NextResponse.json(
      { error: `LaTeX compilation failed (${errorCode || upstreamResponse.status})${details}` },
      { status: 422 }
    )
  }

  logger.error(`[${requestId}] LaTeX compile service error`, {
    status: upstreamResponse.status,
    errorCode,
  })
  return NextResponse.json(
    { error: `LaTeX compile service error: ${upstreamResponse.status}${details}` },
    { status: 502 }
  )
}

/**
 * Stores the compiled PDF as an execution file when execution context is