162 lines
6.5 KiB
Python
162 lines
6.5 KiB
Python
from fastapi import APIRouter, HTTPException, Depends
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from sqlalchemy.orm import Session
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from typing import List, Optional
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from ..models import Dewar as DewarModel, Slot as SlotModel, LogisticsEvent as LogisticsEventModel
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from ..schemas import LogisticsEventCreate, SlotSchema, Dewar as DewarSchema
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from ..database import get_db
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import logging
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from datetime import datetime, timedelta
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router = APIRouter()
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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def calculate_time_until_refill(last_refill: Optional[datetime], refill_interval_hours: int = 24) -> int:
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refill_interval = timedelta(hours=refill_interval_hours)
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now = datetime.now()
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if not last_refill:
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return -1 # Sentinel value indicating no refill event recorded
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time_until_next_refill = last_refill + refill_interval - now
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return max(0, int(time_until_next_refill.total_seconds()))
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@router.get("/slots", response_model=List[SlotSchema])
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async def get_all_slots(db: Session = Depends(get_db)):
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slots = db.query(SlotModel).all()
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slots_with_refill_time = []
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for slot in slots:
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time_until_refill = None
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if slot.dewar_unique_id:
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logger.info(f"Fetching last refill event for dewar: {slot.dewar_unique_id}")
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try:
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last_refill_event = db.query(LogisticsEventModel) \
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.join(DewarModel, DewarModel.id == LogisticsEventModel.dewar_id) \
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.filter(
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DewarModel.unique_id == slot.dewar_unique_id,
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LogisticsEventModel.event_type == "refill"
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) \
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.order_by(LogisticsEventModel.timestamp.desc()) \
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.first()
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except Exception as e:
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logger.error(f"Error querying last refill event: {str(e)}")
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last_refill_event = None
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if last_refill_event:
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last_refill = last_refill_event.timestamp
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time_until_refill = calculate_time_until_refill(last_refill)
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logger.info(f"Slot ID: {slot.id}, Last Refill: {last_refill}, Time Until Refill: {time_until_refill}")
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else:
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logger.warning(f"Slot ID: {slot.id} for dewar id '{slot.dewar_unique_id}' has no refill events.")
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time_until_refill = -1
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else:
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logger.warning(f"Slot ID: {slot.id} has no dewar associated.")
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time_until_refill = -1
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# Ensure Dewar.name is optional if it may not exist in Dewar schema.
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dewar_name = slot.dewar.name if slot.dewar and hasattr(slot.dewar, 'name') else None
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slot_data = SlotSchema(
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id=slot.id,
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qr_code=slot.qr_code,
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label=slot.label,
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qr_base=slot.qr_base,
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occupied=slot.occupied,
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needs_refill=slot.needs_refill,
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dewar_unique_id=slot.dewar_unique_id,
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dewar_name=dewar_name, # Using the optional dewar_name
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time_until_refill=(time_until_refill or -1)
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)
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slots_with_refill_time.append(slot_data)
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return slots_with_refill_time
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@router.get("/dewars", response_model=List[DewarSchema])
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async def get_all_dewars(db: Session = Depends(get_db)):
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dewars = db.query(DewarModel).all()
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return dewars
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@router.post("/dewar/refill", response_model=dict)
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async def refill_dewar(qr_code: str, db: Session = Depends(get_db)):
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logger.info(f"Refilling dewar with QR code: {qr_code}")
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if not isinstance(qr_code, str):
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raise HTTPException(status_code=400, detail="Invalid QR code format")
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dewar = db.query(DewarModel).filter(DewarModel.unique_id == qr_code.strip()).first()
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if not dewar:
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logger.error("Dewar not found")
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raise HTTPException(status_code=404, detail="Dewar not found")
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now = datetime.now()
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new_event = LogisticsEventModel(
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dewar_id=dewar.id,
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slot_id=None,
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event_type="refill",
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timestamp=now,
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action_details=f"{dewar.unique_id} refilled"
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)
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db.add(new_event)
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db.commit()
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time_until_refill_seconds = calculate_time_until_refill(now)
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logger.info(f"Dewar refilled successfully with time_until_refill: {time_until_refill_seconds}")
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return {"message": "Dewar refilled successfully", "time_until_refill": time_until_refill_seconds}
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@router.get("/dewar/{unique_id}", response_model=DewarSchema)
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async def get_dewar_by_unique_id(unique_id: str, db: Session = Depends(get_db)):
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logger.info(f"Received request for dewar with unique_id: {unique_id}")
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dewar = db.query(DewarModel).filter(DewarModel.unique_id == unique_id.strip()).first()
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if not dewar:
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logger.warning(f"Dewar with unique_id '{unique_id}' not found.")
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raise HTTPException(status_code=404, detail="Dewar not found")
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logger.info(f"Returning dewar: {dewar}")
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return dewar
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@router.post("/dewar/scan", response_model=dict)
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async def scan_dewar(event_data: LogisticsEventCreate, db: Session = Depends(get_db)):
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dewar_qr_code = event_data.dewar_qr_code
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location_qr_code = event_data.location_qr_code
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transaction_type = event_data.transaction_type
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logger.info(f"Scanning dewar {dewar_qr_code} for slot {location_qr_code} with transaction type {transaction_type}")
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dewar = db.query(DewarModel).filter(DewarModel.unique_id == dewar_qr_code).first()
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if not dewar:
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raise HTTPException(status_code=404, detail="Dewar not found")
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slot = db.query(SlotModel).filter(SlotModel.qr_code == location_qr_code).first()
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if transaction_type == 'incoming':
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if not slot or slot.occupied:
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raise HTTPException(status_code=400, detail="Slot not found or already occupied")
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logger.info(f"Associating dewar {dewar.unique_id} with slot {slot.qr_code}")
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slot.dewar_unique_id = dewar.unique_id # Properly associate with the unique_id
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slot.occupied = True
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elif transaction_type == 'outgoing':
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if not slot or not slot.occupied or slot.dewar_unique_id != dewar.unique_id:
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raise HTTPException(status_code=400, detail="Slot not found or dewar not associated with slot")
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logger.info(f"Disassociating dewar {dewar.unique_id} from slot {slot.qr_code}")
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slot.dewar_unique_id = None # Remove the association
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slot.occupied = False
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log_event(db, dewar.id, slot.id if slot else None, transaction_type)
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db.commit()
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return {"message": "Status updated successfully"}
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def log_event(db: Session, dewar_id: int, slot_id: int, event_type: str):
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new_event = LogisticsEventModel(dewar_id=dewar_id, slot_id=slot_id, event_type=event_type)
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db.add(new_event)
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db.commit() |