diff --git a/index.js b/index.js
index 1bf7d75..675b46e 100644
--- a/index.js
+++ b/index.js
@@ -1,17 +1,13 @@
 require('dotenv').config()
-const express = require('express')
 const luxon = require('luxon');
 const { WebUntis } = require('webuntis');
+const PocketBase = require('pocketbase/cjs');
 
-const app = express()
-const port = process.env.PORT;
+const pb = new PocketBase('https://fsae41.de');
 
-app.get('/', (req, res) => {
-  res.send('server is running')
-})
-
-app.get('/timetable', async (req, res) => {
+async function getTimetabe() {
   const untis = new WebUntis(process.env.WEBUNTIS_SCHOOL, process.env.WEBUNTIS_USER, process.env.WEBUNTIS_PASS, process.env.WEBUNTIS_URL);
+  let timetable;
   try {
     await untis.login();
     // Start und Ende der aktuellen Woche bestimmen
@@ -21,33 +17,126 @@ app.get('/timetable', async (req, res) => {
     const endOfWeek = now.endOf('week').plus({ days: 7 * 4 * 4 }).toJSDate();     // Sonntag
 
     // Stundenplan für diese Woche abrufen
-    const timetable = await untis.getOwnTimetableForRange(startOfWeek, endOfWeek);
+    timetable = await untis.getOwnTimetableForRange(startOfWeek, endOfWeek);
 
     await untis.logout();
-    res.json({ status: 'success', data: timetable });
   } catch (error) {
     console.log(error);
-    res.statusCode = 500;
-    res.json({ status: 'error', message: error.message || error.toString() });
-  }
-})
-
-const os = require('os');
-const nets = os.networkInterfaces();
-const results = {};
-
-for (const name of Object.keys(nets)) {
-  for (const net of nets[name]) {
-    if (!net.internal) {
-      results[name] = results[name] || [];
-      results[name].push(net.address);
-    }
   }
+  return timetable;
 }
 
-console.log('Local IPs:', results);
+
+setInterval(async () => {
+  const timetable = await getTimetabe();
+
+  if (!timetable || timetable.length === 0) {
+    console.log("No timetable data available.");
+    return;
+  }
 
 
-app.listen(port, () => {
-  console.log(`Example app listening on port ${port}`)
-})
\ No newline at end of file
+  let created = 0;
+  let updated = 0;
+  let skipped = 0;
+
+
+  const sorted = timetable.sort((a, b) => {
+    // Zuerst nach Datum
+    if (a.date !== b.date) {
+      return a.date - b.date;
+    }
+    // Falls Datum gleich, nach Startzeit
+    if (a.startTime !== b.startTime) {
+      return a.startTime - b.startTime;
+    }
+    // Falls Startzeit gleich, nach Endzeit
+    return a.endTime - b.endTime;
+  });
+
+  let final = []
+
+  for (let i = 0; i < sorted.length - 1; i++) {
+    let now = sorted[i];
+    let next = sorted[i + 1];
+    //gleicher tag
+    if (now.date == next.date) {
+      if (now.endTime == next.startTime) {
+        now.endTime = next.endTime;
+        final.push(now);
+      }
+    }
+  }
+
+  pb.autoCancellation(false);
+
+  const records = await pb.collection('classes').getFullList();
+  //console.log(records);
+
+  for (let i = 0; i < final.length; i++) {
+    let existingRecords;
+
+    try {
+      existingRecords = await pb.collection('classes').getList(1, 0, {
+        filter: 'untis_id = "' + final[i].id + '"',
+      });
+      existingRecords = existingRecords.items[0];
+    } catch (error) {
+    }
+    //console.log(typeof existingRecords);
+
+
+    if (!existingRecords) {
+      // Neu erstellen 
+      const data = {
+        "untis_id": final[i].id,
+        "date": final[i].date,
+        "startTime": final[i].startTime,
+        "endTime": final[i].endTime,
+        "ro": JSON.stringify(final[i].ro),
+        "su": JSON.stringify(final[i].su),
+        "kl": JSON.stringify(final[i].kl),
+        "raw": JSON.stringify(final[i]),
+        "old_version": "JSON"
+      };
+
+      const record = await pb.collection('classes').create(data);
+      created++;
+      continue; // Überspringe die Erstellung, wenn der Datensatz bereits existiert
+    }
+
+    //console.log("Record with untis_id " + final[i].id + " already exists. Skipping creation.");
+
+    // Prüfe, ob etwas geändert wurde
+    const isChanged =
+      existingRecords.date != final[i].date ||
+      existingRecords.startTime != final[i].startTime ||
+      existingRecords.endTime != final[i].endTime ||
+      (existingRecords.kl[0].id != final[i].kl[0].id) ||
+      (existingRecords.ro[0].id != final[i].ro[0].id) ||
+      (existingRecords.su[0].id != final[i].su[0].id);
+
+    if (!isChanged) {
+      skipped++;
+      continue;
+    }
+
+    // Aktualisiere den bestehenden Datensatz
+    existingRecords.old_version = existingRecords.raw;
+    existingRecords.raw = JSON.stringify(final[i]);
+    existingRecords.date = final[i].date;
+    existingRecords.startTime = final[i].startTime;
+    existingRecords.endTime = final[i].endTime;
+    existingRecords.kl = final[i].kl;
+    existingRecords.ro = final[i].ro;
+    existingRecords.su = final[i].su;
+    existingRecords.last_update = new Date().toISOString();
+
+    const record = await pb.collection('classes').update(existingRecords.id, existingRecords);
+
+    updated++;
+  }
+
+  console.log(`✅ Sync done — Created: ${created}, Updated: ${updated}, Skipped: ${skipped}`);
+
+}, 1000 * 60 * 30); // Alle 30 Minuten aktualisieren
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 7c065fc..8f0b225 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,7 @@
         "dotenv": "^17.3.1",
         "express": "^5.2.1",
         "luxon": "^3.7.2",
+        "pocketbase": "^0.26.8",
         "webuntis": "^2.2.1"
       }
     },
@@ -796,6 +797,12 @@
         "url": "https://opencollective.com/express"
       }
     },
+    "node_modules/pocketbase": {
+      "version": "0.26.8",
+      "resolved": "https://registry.npmjs.org/pocketbase/-/pocketbase-0.26.8.tgz",
+      "integrity": "sha512-aQ/ewvS7ncvAE8wxoW10iAZu6ElgbeFpBhKPnCfvRovNzm2gW8u/sQNPGN6vNgVEagz44kK//C61oKjfa+7Low==",
+      "license": "MIT"
+    },
     "node_modules/proxy-addr": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
diff --git a/package.json b/package.json
index 285b60b..7cb65eb 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "dotenv": "^17.3.1",
     "express": "^5.2.1",
     "luxon": "^3.7.2",
+    "pocketbase": "^0.26.8",
     "webuntis": "^2.2.1"
   }
 }