From bc9cdc0bff49ebf553be19dd959a25d6e97ec23a Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fischer@muhq.space>
Date: Thu, 17 Sep 2026 17:07:02 +0200
Subject: use course dependent local cache key

This prevents multiple courses overwriting the cached values.
---
 src/database-prod.ts | 2 +-
 src/student-prod.ts  | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/database-prod.ts b/src/database-prod.ts
index d41e829..6712adb 100644
--- a/src/database-prod.ts
+++ b/src/database-prod.ts
@@ -31,7 +31,7 @@ let graduationDb = findGraduationDb();
 const ID_QUERY_PARAM_REGEX = /[?&]id=(\d+)/;
 
 async function findGraduationDb() {
-	let graduationDbId = localStorage.getItem("gruaduationDbId");
+	let graduationDbId = localStorage.getItem(`gruaduationDbId-${getCourseId()}`);
 	if (graduationDbId !== null) {
 		return new DB(Number(graduationDbId));
 	}
diff --git a/src/student-prod.ts b/src/student-prod.ts
index 90398c9..68b65eb 100644
--- a/src/student-prod.ts
+++ b/src/student-prod.ts
@@ -1,6 +1,6 @@
 import type { Graduation } from "./graduation-common.ts";
 import { Student } from "./student-common.ts";
-import { getUserIconUrl, getCourseParticipantsUrl } from "./utils-prod.js";
+import { getCourseId, getUserIconUrl, getCourseParticipantsUrl } from "./utils-prod.js";
 import { fetchGraduation } from "./graduation-prod.ts";
 
 declare module "./student-common.ts" {
@@ -58,7 +58,7 @@ async function _fetchStudents() {
 async function fetchStudents(idFilter?: number, nameFilter?: string) {
 	if (students === null) {
 		const studentsPromise = _fetchStudents();
-		const storedStudents = localStorage.getItem("students");
+		const storedStudents = localStorage.getItem(`students-${getCourseId()}`);
 		if (storedStudents !== null && storedStudents.length > 0) {
 			studentsPromise.then((fetched) => localStorage.setItem("students", JSON.stringify(fetched)));
 			students = [];
-- 
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