restructure: move backend into backend/

backend/app/routers/radacct.py

@@ -0,0 +1,41 @@
+"""radacct — accounting data. Read-only: FreeRADIUS owns writes to this table."""
+from fastapi import APIRouter, Depends, Query
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from .. import crud
+from ..database import get_db
+from ..models import RadAcct
+from ..pagination import Page, PageParams
+from ..schemas import RadAcctOut
+
+router = APIRouter(prefix="/radacct", tags=["radacct (read-only)"])
+
+
+@router.get("", response_model=Page[RadAcctOut])
+def list_acct(
+    page: PageParams = Depends(),
+    username: str | None = None,
+    nasipaddress: str | None = None,
+    active: bool | None = Query(default=None, description="true = sessions with no stop time"),
+    db: Session = Depends(get_db),
+):
+    filters = {"username": username, "nasipaddress": nasipaddress}
+    total = crud.count_rows(db, RadAcct, filters)
+
+    stmt = select(RadAcct)
+    for field, value in filters.items():
+        if value is not None:
+            stmt = stmt.where(getattr(RadAcct, field) == value)
+    if active is True:
+        stmt = stmt.where(RadAcct.acctstoptime.is_(None))
+    elif active is False:
+        stmt = stmt.where(RadAcct.acctstoptime.is_not(None))
+    stmt = stmt.order_by(RadAcct.acctstarttime.desc()).limit(page.limit).offset(page.offset)
+    rows = list(db.execute(stmt).scalars().all())
+    return Page(total=total, limit=page.limit, offset=page.offset, items=rows)
+
+
+@router.get("/{radacctid}", response_model=RadAcctOut)
+def get_acct(radacctid: int, db: Session = Depends(get_db)):
+    return crud.get_row_or_404(db, RadAcct, radacctid, pk_field="radacctid")