Initial commit

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/routers/flock.py

@@ -0,0 +1,70 @@
+from datetime import date
+from typing import Optional
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from database import get_db
+from models import FlockHistory
+from schemas import FlockHistoryCreate, FlockHistoryUpdate, FlockHistoryOut
+
+router = APIRouter(prefix="/api/flock", tags=["flock"])
+
+
+@router.get("", response_model=list[FlockHistoryOut])
+def list_flock_history(db: Session = Depends(get_db)):
+    q = select(FlockHistory).order_by(FlockHistory.date.desc())
+    return db.scalars(q).all()
+
+
+@router.get("/current", response_model=Optional[FlockHistoryOut])
+def get_current_flock(db: Session = Depends(get_db)):
+    """Returns the most recent flock entry — the current flock size."""
+    q = select(FlockHistory).order_by(FlockHistory.date.desc()).limit(1)
+    return db.scalars(q).first()
+
+
+@router.get("/at/{target_date}", response_model=Optional[FlockHistoryOut])
+def get_flock_at_date(target_date: date, db: Session = Depends(get_db)):
+    """Returns the flock size that was in effect on a given date."""
+    q = (
+        select(FlockHistory)
+        .where(FlockHistory.date <= target_date)
+        .order_by(FlockHistory.date.desc())
+        .limit(1)
+    )
+    return db.scalars(q).first()
+
+
+@router.post("", response_model=FlockHistoryOut, status_code=201)
+def create_flock_entry(body: FlockHistoryCreate, db: Session = Depends(get_db)):
+    record = FlockHistory(**body.model_dump())
+    db.add(record)
+    db.commit()
+    db.refresh(record)
+    return record
+
+
+@router.put("/{record_id}", response_model=FlockHistoryOut)
+def update_flock_entry(
+    record_id: int,
+    body: FlockHistoryUpdate,
+    db: Session = Depends(get_db),
+):
+    record = db.get(FlockHistory, record_id)
+    if not record:
+        raise HTTPException(status_code=404, detail="Record not found")
+    for field, value in body.model_dump(exclude_none=True).items():
+        setattr(record, field, value)
+    db.commit()
+    db.refresh(record)
+    return record
+
+
+@router.delete("/{record_id}", status_code=204)
+def delete_flock_entry(record_id: int, db: Session = Depends(get_db)):
+    record = db.get(FlockHistory, record_id)
+    if not record:
+        raise HTTPException(status_code=404, detail="Record not found")
+    db.delete(record)
+    db.commit()