not create access token if not teacher

src/pages/lesson-details.tsx

@@ -24,6 +24,8 @@ import {
   StudentList,
   BreadcrumbsWrapper,
 } from './style'
+import { useAppSelector } from '../__data__/store'
+import { isTeacher } from '../utils/user'
 
 export function getGravatarURL(email, user) {
   if (!email) return void 0
@@ -37,6 +39,8 @@ export function getGravatarURL(email, user) {
 const LessonDetail = () => {
   const { lessonId, courseId } = useParams()
   const canvRef = useRef(null)
+  const user = useAppSelector((s) => s.user)
+  
   const {
     isFetching,
     data: accessCode,
@@ -45,6 +49,7 @@ const LessonDetail = () => {
   } = api.useCreateAccessCodeQuery(
     { lessonId },
     {
+      skip: !isTeacher(user),
       pollingInterval:
         Number(getConfigValue('journal.polling-interval')) || 3000,
       skipPollingIfUnfocused: true,