feat: make preview image support optional

api/create-preview-image.ts

@@ -3,6 +3,7 @@ import { NextApiRequest, NextApiResponse } from 'next'
 import got from 'got'
 import lqip from 'lqip-modern'
 
+import { isPreviewImageSupportEnabled } from '../lib/config'
 import * as types from '../lib/types'
 import * as db from '../lib/db'
 
@@ -11,6 +12,14 @@ export default async (req: NextApiRequest, res: NextApiResponse) => {
     return res.status(405).send({ error: 'method not allowed' })
   }
 
+  if (!isPreviewImageSupportEnabled) {
+    return res
+      .status(418)
+      .send({
+        error: 'preview image support has been disabled for this deployment'
+      })
+  }
+
   const { url, id } = req.body
 
   const result = await createPreviewImage(url, id)