fix(ab env): check the current host to determine the env (codesandbox#5933)

* fix(ab env): check the current host to determine the env

* fix(ab env): use staging_branch to check the env

* fix(ab env): use staging env to determine the env

* fix(ab env): check the current node env and staging

* fix(ab env): reuse sse logic

* fix(abenv): cover local cases

* fix(ab env): recreate host func

* fix(env): remove unnecessary stringify in the ab testing env

* feat(ab env): check the current url

Author: danilowoz

packages/common/src/config/env.ts

@@ -10,9 +10,11 @@ const STAGING_API = Boolean(JSON.stringify(process.env.STAGING_API));
 
 const AB_TESTING_URL_STAGING = 'https://ab-testing.codesandbox.stream';
 const AB_TESTING_URL_PRODUCTION = 'https://ab-testing.codesandbox.io';
-export const AB_TESTING_URL = STAGING_API
-  ? AB_TESTING_URL_STAGING
-  : AB_TESTING_URL_PRODUCTION;
+export const AB_TESTING_URL = /codesandbox\.io/.test(
+  typeof window !== `undefined` ? window?.location?.host : ''
+)
+  ? AB_TESTING_URL_PRODUCTION
+  : AB_TESTING_URL_STAGING;
 
 export const getExperimentUserId = () => {
   const KEY_NAME = 'csb-ab-user-id';