Refactor event logic to support Google Calendar updates

src/sync_logic.py

@@ -145,17 +145,15 @@ def save_local_sync(file_path: str, events: EventsDict) -> None:
                         logger.error(f"Problematic field: {key} = {value} (type: {type(value)})")
 
 
-def add_event_to_google(service: Resource, event: EventDict, calendar_id: str) -> None:
+def _create_google_event_body(event: EventDict) -> Dict[str, Any]:
-    """Add a single event to Google Calendar.
+    """Create the event body for Google Calendar API.
 
     Args:
-        service: Authenticated Google Calendar API service object.
         event: Dictionary containing event details.
-        calendar_id: ID of the target Google Calendar.
-    """
-    logger.info(f"Processing event: {event['summary']} (UID: {event['uid']})")
 
-    try:
+    Returns:
+        Dict[str, Any]: Formatted event body for Google Calendar API.
+    """
     google_event = {
         "summary": event["summary"],
         "description": event.get("description", ""),
@@ -179,6 +177,36 @@ def add_event_to_google(service: Resource, event: EventDict, calendar_id: str) -
             exdates = [f"EXDATE;TZID=UTC:{date}" for date in event["exdate"]]
             google_event["recurrence"].extend(exdates)
 
+    return google_event
+
+
+def add_event_to_google(service: Resource, event: EventDict, calendar_id: str) -> None:
+    """Add or update a single event in Google Calendar.
+
+    Args:
+        service: Authenticated Google Calendar API service object.
+        event: Dictionary containing event details.
+        calendar_id: ID of the target Google Calendar.
+    """
+    logger.info(f"Processing event: {event['summary']} (UID: {event['uid']})")
+
+    try:
+        google_event = _create_google_event_body(event)
+
+        if event.get("google_event_id"):
+            logger.info(f"Updating existing event in Google Calendar: {event['summary']} (Google ID: {event['google_event_id']})")
+            created_event = (
+                service.events()
+                .update(
+                    calendarId=calendar_id,
+                    eventId=event["google_event_id"],
+                    body=google_event,
+                )
+                .execute()
+            )
+            logger.info(f"Successfully updated event: {event['summary']} (Google ID: {created_event['id']})")
+        else:
+            logger.info(f"Creating new event in Google Calendar: {event['summary']}")
             created_event = (
                 service.events()
                 .insert(
@@ -187,14 +215,13 @@ def add_event_to_google(service: Resource, event: EventDict, calendar_id: str) -
                 )
                 .execute()
             )
-
             event["google_event_id"] = created_event["id"]
             logger.info(f"Successfully created event: {event['summary']} (Google ID: {created_event['id']})")
 
         time.sleep(0.5)
 
     except Exception as e:
-        logger.error(f"Failed to add event {event['summary']} (UID: {event['uid']})")
+        logger.error(f"Failed to add/update event {event['summary']} (UID: {event['uid']})")
         logger.error(f"Error: {str(e)}")
         error_events.append(event)