feat: Updated some logic for the useCourseUpgrade() hook

src/hooks/use-course-upgrade.js

@@ -3,21 +3,37 @@ import { useModel } from '@src/generic/model-store'; // eslint-disable-line impo
 import { useSelector } from 'react-redux';
 import { CourseInfoContext } from '../context';
 
+const millisecondsInOneDay = 24 * 60 * 60 * 1000; // hours*minutes*seconds*milliseconds
+
 export default function useCourseUpgrade() {
   const { courseId, isUpgradeEligible } = useContext(CourseInfoContext);
   const { offer } = useModel('coursewareMeta', courseId);
   const { verifiedMode } = useModel('courseHomeMeta', courseId);
   const {
     auditTrialLengthDays,
+    auditTrial,
   } = useSelector(state => state.learningAssistant);
 
   const upgradeUrl = offer?.upgradeUrl || verifiedMode?.upgradeUrl;
 
   if (!isUpgradeEligible || !upgradeUrl) { return { upgradeable: false }; }
 
+  let auditTrialExpired = false;
+  let auditTrialDaysRemaining;
+
+  if (auditTrial?.expirationDate) {
+    const auditTrialExpirationDate = new Date(auditTrial.expirationDate);
+    auditTrialDaysRemaining = Math.ceil((auditTrialExpirationDate - Date.now()) / millisecondsInOneDay);
+
+    auditTrialExpired = auditTrialDaysRemaining < 0;
+  }
+
   return {
     upgradeable: true,
     auditTrialLengthDays,
+    auditTrialDaysRemaining,
+    auditTrialExpired,
+    auditTrial,
     upgradeUrl,
   };
 }