diff --git a/library/calendar_sync.py b/library/calendar_sync.py
new file mode 100644
index 0000000..47ac5ab
--- /dev/null
+++ b/library/calendar_sync.py
@@ -0,0 +1,159 @@
+#!/usr/bin/env python3
+
+from ansible.module_utils.basic import AnsibleModule
+from caldav import DAVClient, Calendar
+import vobject
+import requests
+import logging
+
+# Logging für Debugging einrichten
+logging.basicConfig(level=logging.WARNING)
+
+def fetch_ics_events(url, user=None, password=None, verify_ssl=True):
+    try:
+        response = requests.get(url, auth=(user, password) if user else None, verify=verify_ssl)
+        response.raise_for_status()
+        events = []
+        ics_data = response.text
+
+        if not ics_data.strip():
+            logging.warning("Leere ICS-Daten empfangen")
+            return events
+
+        try:
+            for calendar in vobject.readComponents(ics_data):
+                for component in calendar.components():
+                    if component.name == 'VEVENT':
+                        if hasattr(component, 'uid') and component.uid.value:
+                            events.append(component)
+                        else:
+                            logging.warning("VEVENT ohne UID übersprungen")
+        except vobject.base.ParseError as e:
+            logging.error(f"Parse-Fehler in ICS-Daten: {str(e)}")
+        return events
+    except Exception as e:
+        raise Exception(f"ICS-Fehler: {str(e)}")
+
+def connect_caldav(url, user=None, password=None, verify_ssl=True):
+    try:
+        client = DAVClient(
+            url,
+            username=user,
+            password=password,
+            ssl_verify_cert=verify_ssl
+        )
+        # Direktes Calendar-Objekt, kein principal-Abgleich nötig
+        return Calendar(client=client, url=url)
+    except Exception as e:
+        raise Exception(f"CalDAV-Fehler: {str(e)}")
+
+def safe_caldav_event_processing(event):
+    try:
+        if event is None or not hasattr(event, 'data') or not event.data:
+            return None
+        for calendar in vobject.readComponents(event.data):
+            for component in calendar.components():
+                if component.name == 'VEVENT' and hasattr(component, 'uid'):
+                    return {
+                        'uid': str(component.uid),
+                        'event_object': event,
+                        'data': event.data
+                    }
+        return None
+    except vobject.base.ParseError:
+        logging.warning("Parse-Fehler in CalDAV-Event, überspringe")
+        return None
+    except Exception as e:
+        logging.error(f"Fehler bei Event-Verarbeitung: {str(e)}")
+        return None
+
+def sync_ics_to_caldav(module):
+    ics_events = fetch_ics_events(
+        module.params['source_url'],
+        module.params['source_user'],
+        module.params['source_password'],
+        module.params['verify_ssl']
+    )
+
+    target_cal = connect_caldav(
+        module.params['target_url'],
+        module.params['target_user'],
+        module.params['target_password'],
+        module.params['verify_ssl']
+    )
+
+    existing_events = {}
+    for event in target_cal.events():
+        processed = safe_caldav_event_processing(event)
+        if processed:
+            existing_events[processed['uid']] = processed
+
+    changed = False
+    results = {'added': [], 'updated': [], 'removed': []}
+
+    for vevent in ics_events:
+        uid = str(vevent.uid)
+        try:
+            ical_data = vevent.serialize()
+        except Exception as e:
+            logging.error(f"Serialisierungsfehler für UID {uid}: {str(e)}")
+            continue
+
+        if not ical_data.strip():
+            logging.warning(f"Leere iCal-Daten für UID {uid}, überspringe")
+            continue
+
+        if uid not in existing_events:
+            try:
+                target_cal.add_event(ical_data)
+                results['added'].append(uid)
+                changed = True
+            except Exception as e:
+                logging.error(f"Hinzufügen fehlgeschlagen für UID {uid}: {str(e)}")
+        else:
+            existing_data = existing_events[uid]['data']
+            if ical_data != existing_data:
+                try:
+                    event_obj = existing_events[uid]['event_object']
+                    event_obj.data = ical_data
+                    event_obj.save()
+                    results['updated'].append(uid)
+                    changed = True
+                except Exception as e:
+                    logging.error(f"Aktualisieren fehlgeschlagen für UID {uid}: {str(e)}")
+
+    if module.params['purge']:
+        current_uids = {str(e.uid) for e in ics_events}
+        for uid, event_info in existing_events.items():
+            if uid not in current_uids:
+                try:
+                    event_info['event_object'].delete()
+                    results['removed'].append(uid)
+                    changed = True
+                except Exception as e:
+                    logging.error(f"Löschen fehlgeschlagen für UID {uid}: {str(e)}")
+
+    return changed, results
+
+def run_module():
+    module_args = dict(
+        source_url=dict(type='str', required=True),
+        source_user=dict(type='str', required=False, default=None),
+        source_password=dict(type='str', required=False, no_log=True, default=None),
+        target_url=dict(type='str', required=True),
+        target_user=dict(type='str', required=False, default=None),
+        target_password=dict(type='str', required=False, no_log=True, default=None),
+        verify_ssl=dict(type='bool', default=False),
+        purge=dict(type='bool', default=False)
+    )
+
+    module = AnsibleModule(argument_spec=module_args, supports_check_mode=False)
+
+    try:
+        changed, results = sync_ics_to_caldav(module)
+        module.exit_json(changed=changed, **results)
+    except Exception as e:
+        module.fail_json(msg=str(e))
+
+if __name__ == '__main__':
+    run_module()