Enable set `AIRGAP` cookie to view Lunr search results (#18648)

* Enable set `lunr` cookie to view Lunr search results

* Use AIRGAP instead of lunr for cookie name

includes/explorer.html

@@ -1,7 +1,7 @@
 {% include breadcrumbs %}
 
 <div class="graphql-container">
-  {% if process.env.AIRGAP %}
+  {% if AIRGAP %}
     <p>GraphQL explorer is not available on this environment.</p>
   {% else %}
     <iframe id="graphiql" class="graphql-explorer" scrolling="no" src="{{ graphql.explorerUrl }}" allowfullscreen>

layouts/graphql-explorer.html

@@ -21,7 +21,7 @@
 
           <div class="mt-2">
             <div>
-              {% if process.env.AIRGAP %}
+              {% if AIRGAP %}
                 <p>GraphQL explorer is not available on this environment.</p>
               {% else %}
                 <iframe id="graphiql" class="graphql-explorer" scrolling="no" src="{{ graphql.explorerUrl }}">

layouts/product-landing.html

@@ -44,7 +44,7 @@
           {% if page.product_video and page.product_video != '' %}
             <div class="col-12 col-lg-6">
               <div class="position-relative" style="padding-bottom:56.25%;">
-                {% unless process.env.AIRGAP %}
+                {% unless AIRGAP %}
                   <iframe
                     title="{{ page.shortTitle }} Video"
                     class="top-0 left-0 position-absolute box-shadow-large rounded-1 width-full height-full"

middleware/context.js

@@ -29,7 +29,6 @@ module.exports = async function contextualize (req, res, next) {
   featureFlags.forEach(featureFlagName => {
     req.context.process.env[featureFlagName] = process.env[featureFlagName]
   })
-  if (process.env.AIRGAP) req.context.process.env.AIRGAP = true
 
   // define each context property explicitly for code-search friendliness
   // e.g. searches for "req.context.page" will include results from this file
@@ -64,8 +63,9 @@ module.exports = async function contextualize (req, res, next) {
       nonEnterpriseDefaultVersion
     },
     // `|| undefined` won't show at all for production
-    airgap: Boolean(process.env.AIRGAP) || undefined
+    airgap: Boolean(process.env.AIRGAP || req.cookies.AIRGAP) || undefined
   })
+  if (process.env.AIRGAP || req.cookies.AIRGAP) req.context.AIRGAP = true
 
   return next()
 }

middleware/search.js

@@ -22,7 +22,7 @@ router.get('/', async function postSearch (req, res, next) {
   }
 
   try {
-    const results = process.env.AIRGAP
+    const results = process.env.AIRGAP || req.cookies.AIRGAP
       ? await loadLunrResults({ version, language, query: `${query} ${filters || ''}`, limit })
       : await loadAlgoliaResults({ version, language, query, filters, limit })
     return res.status(200).json(results)