From d09eb5e6348ffba76454df871f91d9cd15c20635 Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fischer@muhq.space>
Date: Sun, 12 Jul 2026 13:58:31 +0200
Subject: js: introduce common date formatting helpers

---
 cockpit/js/cockpit.js        | 12 +++++-------
 js/utils-mock.js             |  1 +
 js/utils-prod.js             |  2 ++
 mass-graducation/src/main.js |  4 ++--
 4 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/cockpit/js/cockpit.js b/cockpit/js/cockpit.js
index 15219cd..1624742 100644
--- a/cockpit/js/cockpit.js
+++ b/cockpit/js/cockpit.js
@@ -17,6 +17,8 @@ import {
 	isTeacher as getIsTeacher,
 	getName,
 	getUserId,
+	DATE_FMT,
+	DATETIME_FMT,
 } from "../../js/utils-ENV.js";
 import { initSelection } from "../../js/selection.js";
 
@@ -259,11 +261,7 @@ async function updateStudentGraduation() {
 			}
 
 			const value = change[key];
-			let fmt = "";
-			if (key == "date")
-				fmt = `${value.getDate()}.${value.getMonth()}.${value.getFullYear()} ${value.getHours()}:${value.getMinutes()}`;
-			else
-				fmt = value;
+			const fmt = key == "date" ? DATETIME_FMT.format(value) : value;
 
 			const changeTd = document.createElement("td");
 			changeTd.innerHTML = fmt;
@@ -319,8 +317,8 @@ async function updateStudentGraduation() {
 		for (const period of graduation.pastObservations) {
 			const tr = document.createElement("tr");
 			const periodTd = document.createElement("td");
-			const startDate = new Intl.DateTimeFormat("de-DE", { month: "numeric", day: "numeric" }).format(period.start);
-			const endDate = new Intl.DateTimeFormat("de-DE", { month: "numeric", day: "numeric", year: "numeric" }).format(period.end);
+			const startDate = DATE_FMT.format(period.start);
+			const endDate = DATE_FMT.format(period.end);
 			periodTd.innerHTML = `${startDate} - ${endDate}`;
 			tr.appendChild(periodTd);
 
diff --git a/js/utils-mock.js b/js/utils-mock.js
index c4a9a73..f394183 100644
--- a/js/utils-mock.js
+++ b/js/utils-mock.js
@@ -1,4 +1,5 @@
 import { fetchStudent } from "./student-ENV.js";
+export { DATE_FMT, DATETIME_FMT, dateStringNow, datetimeStringNow } from "./utils-common.js";
 
 export function isTeacher() {
 	return !(new URLSearchParams(document.location.search)).has("student");
diff --git a/js/utils-prod.js b/js/utils-prod.js
index 24bef96..70e4980 100644
--- a/js/utils-prod.js
+++ b/js/utils-prod.js
@@ -1,3 +1,5 @@
+export { DATE_FMT, DATETIME_FMT, dateStringNow, datetimeStringNow } from "./utils-common.js";
+
 export function isTeacher() {
 	return Boolean(document.querySelector('.editmode-switch-form'))
 		|| document.body.classList.contains('editing');
diff --git a/mass-graducation/src/main.js b/mass-graducation/src/main.js
index 3d20f0b..8d009b0 100644
--- a/mass-graducation/src/main.js
+++ b/mass-graducation/src/main.js
@@ -8,7 +8,7 @@ import {
 
 import { fetchGroups } from "../../js/group.js";
 import { initSelection } from "../../js/selection.js";
-import { getName } from "../../js/utils-ENV.js";
+import { getName, DATETIME_FMT, datetimeStringNow } from "../../js/utils-ENV.js";
 
 let group;
 let name;
@@ -199,7 +199,7 @@ async function loadGroup(selected) {
 		} else {
 			date = graduation.observation.start;
 		}
-		dateCell.innerHTML = date.toLocaleString("de-DE", { month: "numeric", day: "numeric", year: "numeric", hour: "numeric", minute: "numeric" });
+		dateCell.innerHTML = DATETIME_FMT.format(date);
 		row.appendChild(dateCell);
 
 		const btnCell = document.createElement("td");
-- 
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