get puck events

backend/app/routers/puck.py

@@ -3,7 +3,7 @@ from sqlalchemy.orm import Session
 from typing import List
 import uuid
 from app.schemas import Puck as PuckSchema, PuckCreate, PuckUpdate, SetTellPosition, PuckEvent
-from app.models import Puck as PuckModel, Sample as SampleModel, PuckEvent as PuckEventModel, Slot as SlotModel, LogisticsEvent as LogisticsEventModel
+from app.models import Puck as PuckModel, Sample as SampleModel, PuckEvent as PuckEventModel, Slot as SlotModel, LogisticsEvent as LogisticsEventModel, Dewar as DewarModel
 from app.dependencies import get_db
 from datetime import datetime
 
@@ -129,9 +129,10 @@ async def get_last_tell_position(puck_id: str, db: Session = Depends(get_db)):
     }
 
 @router.get("/slot/{slot_id}", response_model=List[PuckSchema])
-async def get_pucks_by_latest_dewar_slot(slot_id: int, db: Session = Depends(get_db)):
+async def get_pucks_by_latest_beamline_dewar_slot(slot_id: int, db: Session = Depends(get_db)):
     """
-    Retrieve all pucks for the most recent dewar associated with the given slot_id.
+    Retrieve all pucks for the most recent dewar associated with the given slot_id
+    with a 'beamline' event type.
     """
     # Query the Slot table to ensure the slot exists
     slot = db.query(SlotModel).filter(SlotModel.id == slot_id).first()
@@ -142,23 +143,34 @@ async def get_pucks_by_latest_dewar_slot(slot_id: int, db: Session = Depends(get
     if not slot.dewar:
         raise HTTPException(status_code=404, detail="No dewar associated with the given slot")
 
-    # Find the most recent slot for the associated dewar (using a timestamp or event record)
-    # Query related `LogisticsEvent` or the latest assignment of this dewar
-    recent_slot = (
-        db.query(SlotModel)
-        .join(LogisticsEventModel,
-              SlotModel.id == LogisticsEventModel.slot_id)  # Assumes LogisticsEvent tracks slot changes
-        .filter(SlotModel.dewar_unique_id == slot.dewar_unique_id)  # Match slots by dewar's unique ID
-        .order_by(LogisticsEventModel.timestamp.desc())  # Most recent event
+    # Find the most recent dewar associated with a "beamline" event type
+    recent_beamline_event = (
+        db.query(LogisticsEventModel)
+        .filter(
+            LogisticsEventModel.slot_id == slot_id,
+            LogisticsEventModel.event_type == "Beamline"  # Filter by "beamline"
+        )
+        .order_by(LogisticsEventModel.timestamp.desc())  # Order by most recent event
         .first()
     )
 
-    # Confirm if a recent slot association exists
-    if not recent_slot or not recent_slot.dewar:
-        raise HTTPException(status_code=404, detail="No recent slot association found for the dewar")
+    # Confirm if we found a "beamline" event for the slot
+    if not recent_beamline_event:
+        raise HTTPException(
+            status_code=404,
+            detail="No 'beamline' event found for the given slot"
+        )
 
-    # Retrieve all pucks from the dewar currently in the recent slot
-    pucks = db.query(PuckModel).filter(PuckModel.dewar_id == recent_slot.dewar.id).all()
+    # Retrieve the dewar linked to the "beamline" event
+    dewar = db.query(DewarModel).filter(DewarModel.id == recent_beamline_event.dewar_id).first()
+    if not dewar:
+        raise HTTPException(
+            status_code=404,
+            detail="No dewar associated with the most recent 'beamline' event"
+        )
+
+    # Retrieve all pucks associated with the dewar
+    pucks = db.query(PuckModel).filter(PuckModel.dewar_id == dewar.id).all()
 
     # Return the list of pucks
     return pucks