utils: introduce course local storage helper class

1 files changed, 11 insertions, 4 deletions

diff --git a/src/student-prod.ts b/src/student-prod.ts
index 1addf32..ea258c7 100644
--- a/src/student-prod.ts
+++ b/src/student-prod.ts
@@ -1,6 +1,11 @@
 import type { Graduation } from "./graduation-common.ts";
 import { Student } from "./student-common.ts";
-import { getCourseId, getUserIconUrl, getCourseParticipantsUrl } from "./utils-prod.js";
+import {
+	getCourseId,
+	CourseLocalStorage,
+	getUserIconUrl,
+	getCourseParticipantsUrl,
+} from "./utils-prod.js";
 import { fetchGraduation } from "./graduation-prod.ts";
 
 declare module "./student-common.ts" {
@@ -58,16 +63,18 @@ async function _fetchStudents() {
 async function fetchStudents(idFilter?: number, nameFilter?: string) {
 	if (students === null) {
 		const studentsPromise = _fetchStudents();
-		const storedStudents = localStorage.getItem(`students-${getCourseId()}`);
+		const storedStudents = CourseLocalStorage.getItem(`students-${getCourseId()}`);
 		if (storedStudents !== null && storedStudents.length > 0) {
-			studentsPromise.then((fetched) => localStorage.setItem("students", JSON.stringify(fetched)));
+			studentsPromise.then((fetched) =>
+				CourseLocalStorage.setItem("students", JSON.stringify(fetched)),
+			);
 			students = [];
 			for (const o of JSON.parse(storedStudents)) {
 				students.push(new Student(o.id, o.name));
 			}
 		} else {
 			students = await studentsPromise;
-			localStorage.setItem("students", JSON.stringify(students));
+			CourseLocalStorage.setItem("students", JSON.stringify(students));
 		}
 	}