Merge pull request #24417 from overleaf/mf-implement-stripe-hosted-checkout-split-test

[web] Implement stripe hosted checkout with split test

GitOrigin-RevId: 25e5ff2a46135f402cdf479623ab38c858c5640c

services/web/app/src/Features/Subscription/SubscriptionController.js

@@ -629,7 +629,7 @@ async function getRecommendedCurrency(req, res) {
     ip = req.query.ip
   }
   const currencyLookup = await GeoIpLookup.promises.getCurrencyCode(ip)
-  const countryCode = currencyLookup.countryCode
+  let countryCode = currencyLookup.countryCode
   const recommendedCurrency = currencyLookup.currencyCode
 
   let currency = null
@@ -640,6 +640,13 @@ async function getRecommendedCurrency(req, res) {
     currency = recommendedCurrency
   }
 
+  const queryCountryCode = req.query.countryCode?.toUpperCase()
+
+  // only enable countryCode testing flag on staging or dev environments
+  if (queryCountryCode && process.env.NODE_ENV !== 'production') {
+    countryCode = queryCountryCode
+  }
+
   return {
     currency,
     recommendedCurrency,