now associating a dewar to a slot

backend/app/routers/logistics.py

@@ -87,4 +87,22 @@ async def scan_dewar(event_data: LogisticsEventCreate, db: Session = Depends(get
 def log_event(db: Session, dewar_id: int, slot_id: int, event_type: str):
     new_event = LogisticsEventModel(dewar_id=dewar_id, slot_id=slot_id, event_type=event_type)
     db.add(new_event)
-    db.commit()
+    db.commit()
+
+
+@router.post("/dewar/refill", response_model=dict)
+async def refill_dewar(qr_code: str, db: Session = Depends(get_db)):
+    dewar = db.query(DewarModel).filter(DewarModel.unique_id == qr_code).first()
+    if not dewar:
+        raise HTTPException(status_code=404, detail="Dewar not found")
+
+    # Process refill
+    dewar.last_refill = datetime.now()
+    new_event = LogisticsEventModel(
+        dewar_id=dewar.id, slot_id=None,  # No specific slot, as it's a refill event
+        event_type="refill",
+        action_details=f"{dewar.unique_id} refilled"
+    )
+    db.add(new_event)
+    db.commit()
+    return {"message": "Dewar refilled successfully"}