Refactor: further extract controller logic from routers

src/controllers/images/beerImages/index.ts

@@ -0,0 +1,34 @@
+import ServerError from '@/config/util/ServerError';
+import addBeerImageToDB from '@/services/BeerImage/addBeerImageToDB';
+import APIResponseValidationSchema from '@/validation/APIResponseValidationSchema';
+import { NextApiResponse } from 'next';
+import { z } from 'zod';
+import { UploadBeerPostImagesRequest } from './types';
+
+// eslint-disable-next-line import/prefer-default-export
+export const processBeerImageData = async (
+  req: UploadBeerPostImagesRequest,
+  res: NextApiResponse<z.infer<typeof APIResponseValidationSchema>>,
+) => {
+  const { files, user, body } = req;
+
+  if (!files || !files.length) {
+    throw new ServerError('No images uploaded', 400);
+  }
+
+  const beerImages = await addBeerImageToDB({
+    alt: body.alt,
+    caption: body.caption,
+    beerPostId: req.query.id,
+    userId: user!.id,
+    files,
+  });
+
+  res.status(200).json({
+    success: true,
+    message: `Successfully uploaded ${beerImages.length} image${
+      beerImages.length > 1 ? 's' : ''
+    }`,
+    statusCode: 200,
+  });
+};