perf: batch authorization and activity updates

src/govoplan_access/backend/security/sessions.py

@@ -4,7 +4,7 @@ from dataclasses import dataclass
 from datetime import timedelta
 from collections.abc import Iterable
 
-from sqlalchemy.orm import Session
+from sqlalchemy.orm import Session, joinedload
 
 from govoplan_access.backend.auth.tokens import generate_secret, hash_secret, verify_secret
 from govoplan_access.backend.db.models import (
@@ -104,17 +104,39 @@ def create_auth_session(
     return CreatedSession(model=model, token=token, csrf_token=csrf_token)
 
 
-def authenticate_session_token(session: Session, token: str) -> AuthSession | None:
+def authenticate_session_token(
+    session: Session,
+    token: str,
+    *,
+    touch_interval_seconds: int = 5 * 60,
+) -> AuthSession | None:
     token_hash = hash_session_token(token)
-    model = session.query(AuthSession).filter(AuthSession.token_hash == token_hash, AuthSession.revoked_at.is_(None)).one_or_none()
+    model = (
+        session.query(AuthSession)
+        .options(
+            joinedload(AuthSession.user).joinedload(User.account),
+            joinedload(AuthSession.account),
+        )
+        .filter(
+            AuthSession.token_hash == token_hash,
+            AuthSession.revoked_at.is_(None),
+        )
+        .one_or_none()
+    )
     if not model:
         return None
     now = utc_now()
     expires_at = ensure_aware_utc(model.expires_at)
     if expires_at is None or expires_at < now:
         return None
-    model.last_seen_at = now
-    session.add(model)
+    last_seen_at = ensure_aware_utc(model.last_seen_at)
+    if (
+        touch_interval_seconds <= 0
+        or last_seen_at is None
+        or now - last_seen_at >= timedelta(seconds=touch_interval_seconds)
+    ):
+        model.last_seen_at = now
+        session.add(model)
     return model