Refactor: move service logic out of api routes and into separate files

src/services/BeerImage/processImageDataIntoDB.ts

@@ -0,0 +1,39 @@
+import DBClient from '@/prisma/DBClient';
+import { BeerImage } from '@prisma/client';
+import { z } from 'zod';
+import ImageMetadataValidationSchema from '../types/ImageSchema/ImageMetadataValidationSchema';
+
+interface ProcessImageDataArgs {
+  files: Express.Multer.File[];
+  alt: z.infer<typeof ImageMetadataValidationSchema>['alt'];
+  caption: z.infer<typeof ImageMetadataValidationSchema>['caption'];
+  beerPostId: string;
+  userId: string;
+}
+
+const processImageDataIntoDB = ({
+  alt,
+  caption,
+  files,
+  beerPostId,
+  userId,
+}: ProcessImageDataArgs) => {
+  const beerImagePromises: Promise<BeerImage>[] = [];
+  files.forEach((file) => {
+    beerImagePromises.push(
+      DBClient.instance.beerImage.create({
+        data: {
+          alt,
+          caption,
+          postedBy: { connect: { id: userId } },
+          beerPost: { connect: { id: beerPostId } },
+          path: file.path,
+        },
+      }),
+    );
+  });
+
+  return Promise.all(beerImagePromises);
+};
+
+export default processImageDataIntoDB;