Remove useless reports, avoid DB-Races

app/db.py

@@ -4,7 +4,7 @@ from contextlib import contextmanager
 from pathlib import Path
 from typing import Iterator
 
-from sqlalchemy import create_engine, text
+from sqlalchemy import create_engine, event, text
 from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
 
 from app.config import get_settings
@@ -23,7 +23,24 @@ def _engine_url() -> str:
     return url
 
 
-engine = create_engine(_engine_url(), future=True, pool_pre_ping=True)
+def _connect_args(url: str) -> dict:
+    if url.startswith("sqlite:"):
+        return {"timeout": 60}
+    return {}
+
+
+engine_url = _engine_url()
+engine = create_engine(engine_url, future=True, pool_pre_ping=True, connect_args=_connect_args(engine_url))
+
+
+@event.listens_for(engine, "connect")
+def _configure_sqlite(dbapi_connection, connection_record) -> None:
+    if engine.url.get_backend_name() != "sqlite":
+        return
+    cursor = dbapi_connection.cursor()
+    cursor.execute("PRAGMA busy_timeout=60000")
+    cursor.execute("PRAGMA journal_mode=WAL")
+    cursor.close()
 SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, future=True)