last50Weeks gets cached

src/server.js

@@ -4,6 +4,7 @@ const app = express();
 const { spawnSync } = require('child_process');
 const moment = require('moment');
 const { WebUntis } = require('webuntis');
+var cron = require('node-cron');
 
 // Befehl für die Skriptausführung
 const command = process.platform === 'win32' ? 'python' : 'python3';
@@ -15,21 +16,26 @@ const static = path.join(__dirname, 'static');
 // Verwende EJS als Vorlagen-Engine
 app.set('view engine', 'ejs');
 
-// Funktion zum Erstellen der Liste der letzten 50 Wochen
-function getLast50Weeks() {
+function getlast50weeks() {
     let currentWeek = moment().startOf('isoWeek');
-    const last50Weeks = [];
-    
+    let last50WeeksCache = [];
+
     for (let i = 0; i < 50; i++) {
         const startOfWeek = currentWeek.clone().format('DD.MM.YYYY');
         const endOfWeek = currentWeek.clone().add(6, 'days').format('DD.MM.YYYY');
-        last50Weeks.push(startOfWeek + " - " + endOfWeek);
+        last50WeeksCache.push(startOfWeek + " - " + endOfWeek);
         currentWeek.subtract(7, 'days');
     }
     
-    return last50Weeks;
+    return last50WeeksCache;
 }
 
+let last50Weeks = getlast50weeks();
+
+cron.schedule('0 6 * * *', () => {
+    last50Weeks = getlast50weeks();
+});
+
 function getCalendarEntries(weekDate) {
     const [startDateStr, endDateStr] = weekDate.split(" - ");
     
@@ -131,12 +137,16 @@ app.use("/", express.static(static));
 
 // Definiere eine Route für die Startseite
 app.get('/', (req, res) => {
-    res.render(path.join(static, 'index'), { options:getLast50Weeks() });
+    res.render(path.join(static, 'index'), {options:last50Weeks });
+});
+
+app.get('/getlast50weeks', (req, res) => {
+    res.send(last50Weeks);
 });
 
 // Definiere eine Route für die Ausgabe der Daten
 app.get('/getreport', async (req, res) => {
-    const weekDate = getLast50Weeks()[req.query.week];
+    const weekDate = last50Weeks[req.query.week];
     res.send({
         calendar: getCalendarEntries(weekDate),
         untis: await getUntis(weekDate)