Improve unsupported PDF character errors

backend/src/routes/functions.ts

@@ -25,6 +25,7 @@ import { s3 } from "../utils/s3";
 import { secrets } from "../utils/secrets";
 import { storeExtractedTextForFile } from "../utils/documentText";
 import { generateLiquidityForecast } from "../utils/liquidityForecast";
+import { getUnsupportedPdfCharacterMessage } from "../utils/pdfCharacterError";
 dayjs.extend(customParseFormat)
 dayjs.extend(isoWeek)
 dayjs.extend(isBetween)
@@ -134,7 +135,15 @@ export default async function functionRoutes(server: FastifyInstance) {
             return pdf // Fastify wandelt automatisch in JSON
         } catch (err) {
             console.log(err)
-            reply.code(500).send({ error: "Failed to create PDF" })
+            const unsupportedCharacterMessage = getUnsupportedPdfCharacterMessage(err, body.data)
+            if (unsupportedCharacterMessage) {
+                return reply.code(422).send({
+                    error: unsupportedCharacterMessage,
+                    code: "UNSUPPORTED_PDF_CHARACTER",
+                })
+            }
+
+            return reply.code(500).send({ error: "Failed to create PDF" })
         }
     })