From 8118c0645e5fe502d82f075181eec839d28390bf Mon Sep 17 00:00:00 2001
From: midas <midas@wollinger.co.at>
Date: Sat, 12 Jul 2025 08:52:17 +0000
Subject: [PATCH] library/calendar_sync.py aktualisiert

---
 library/calendar_sync.py | 111 ++++++++++++++++++++++++++++-----------
 1 file changed, 80 insertions(+), 31 deletions(-)

diff --git a/library/calendar_sync.py b/library/calendar_sync.py
index 705134e..0e9c037 100644
--- a/library/calendar_sync.py
+++ b/library/calendar_sync.py
@@ -5,16 +5,33 @@ from caldav import DAVClient
 import vobject
 import requests
 from urllib.parse import urlparse
+import logging
+
+# Logging für Debugging einrichten
+logging.basicConfig(level=logging.WARNING)
 
 def fetch_ics_events(url, user=None, password=None):
     try:
         response = requests.get(url, auth=(user, password) if user else None)
         response.raise_for_status()
         events = []
-        for calendar in vobject.readComponents(response.text):
-            for component in calendar.components():
-                if component.name == 'VEVENT':
-                    events.append(component)
+        ics_data = response.text
+        
+        # Debug-Ausgabe für ungültige Daten
+        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)}")
@@ -37,6 +54,27 @@ def connect_caldav(url, user=None, password=None, verify_ssl=True):
     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'],
@@ -53,43 +91,54 @@ def sync_ics_to_caldav(module):
 
     existing_events = {}
     for event in target_cal.events():
-        if event is None:
-            continue
-        data = getattr(event, 'data', None)
-        if not data:
-            continue
-        try:
-            for calendar in vobject.readComponents(data):
-                for component in calendar.components():
-                    if component.name == 'VEVENT' and hasattr(component, 'uid'):
-                        uid = str(component.uid)
-                        existing_events[uid] = event
-        except Exception:
-            continue
+        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)
-        ical_data = vevent.serialize()
+        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:
-            target_cal.add_event(ical_data)
-            results['added'].append(uid)
-            changed = True
-        elif ical_data != existing_events[uid].data:
-            existing_events[uid].data = ical_data
-            existing_events[uid].save()
-            results['updated'].append(uid)
-            changed = True
+            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 in set(existing_events.keys()) - current_uids:
-            existing_events[uid].delete()
-            results['removed'].append(uid)
-            changed = True
+        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
 
@@ -114,4 +163,4 @@ def run_module():
         module.fail_json(msg=str(e))
 
 if __name__ == '__main__':
-    run_module()
+    run_module()
\ No newline at end of file