Add comments to LD API handler files

Author: andybywire

api/getLinkedData.js

@@ -8,6 +8,7 @@ const metascraper = require('metascraper')([
   require('metascraper-image')()
 ]);
 
+// Specify origins allowed to access this function
 const allowedOrigin = (process.env.NODE_ENV == "development") ? "http://localhost:3333" : "https://cms.uxmethods.org";
 
 module.exports = async (req, res, next) => {
@@ -19,12 +20,12 @@ module.exports = async (req, res, next) => {
       const targetUrl = response.link;
       const { body: html, url } = await got(targetUrl);
       const metadata = await metascraper({ html, url });
-      res.locals.resourceData = metadata;
-      next();
+      res.locals.resourceData = metadata; // writes metadata to a local object to pass to the next handler
+      next(); // pass control to the next handler
     } catch (e) {
       console.error(e);
     }
-  } else {
+  } else { // Boot out any origins not on my allowed list.
     console.log("Unauthorized origin. Originating URL is: " + requestOrigin);
     res.status(401).end('Unauthorized origin.');
   }

api/postImage.js

@@ -9,6 +9,7 @@ const client = sanityClient({
   projectId: projectId,
   dataset: 'production',
   apiVersion: '2021-03-25',
+  useCdn: true,
   token: uxmToken
 });
 

api/postLinkedData.js

@@ -16,7 +16,7 @@ module.exports = async (req, res, next) => {
           patch: {
             id: resourceId,
             set: {
-              title: metadata.title != null ? metadata.title : "",
+              title: metadata.title != null ? metadata.title : "", 
               author: metadata.author != null ? metadata.author : "",
               publisher: {
                 pubName: metadata.publisher != null ? metadata.publisher : "",