Calendar + NLP modules implemented

backend/modules/calendar/service.py

@@ -0,0 +1,45 @@
+# modules/calendar/service.py
+from sqlalchemy.orm import Session
+from datetime import datetime
+from modules.calendar.models import CalendarEvent
+from core.exceptions import not_found_exception
+
+def create_calendar_event(db: Session, user_id: int, event_data):
+    event = CalendarEvent(**event_data.dict(), user_id=user_id)
+    db.add(event)
+    db.commit()
+    db.refresh(event)
+    return event
+
+def get_calendar_events(db: Session, user_id: int, start: datetime, end: datetime):
+    query = db.query(CalendarEvent).filter(
+        CalendarEvent.user_id == user_id
+    )
+    if start:
+        query = query.filter(CalendarEvent.start_time >= start)
+    if end:
+        query = query.filter(CalendarEvent.end_time <= end)
+    return query.all()
+
+def update_calendar_event(db: Session, user_id: int, event_id: int, event_data):
+    event = db.query(CalendarEvent).filter(
+        CalendarEvent.id == event_id,
+        CalendarEvent.user_id == user_id
+    ).first()
+    if not event:
+        raise not_found_exception()
+    for key, value in event_data.dict().items():
+        setattr(event, key, value)
+    db.commit()
+    db.refresh(event)
+    return event
+
+def delete_calendar_event(db: Session, user_id: int, event_id: int):
+    event = db.query(CalendarEvent).filter(
+        CalendarEvent.id == event_id,
+        CalendarEvent.user_id == user_id
+    ).first()
+    if not event:
+        raise not_found_exception()
+    db.delete(event)
+    db.commit()