Add logging out

routes/logout.py

@@ -0,0 +1,48 @@
+from fastapi import APIRouter, Request, Form, Response, Depends
+from fastapi.responses import RedirectResponse
+from sqlalchemy.orm import Session as DBSession
+from database import SessionLocal, User, Session
+from config import settings, cipher
+from services import auth
+from typing import Optional
+import uuid
+
+router = APIRouter()
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+@router.post('/spfn/logout')
+async def logout(
+    request: Request,
+    frontend_origin: Optional[str] = Form(None),
+    db: DBSession = Depends(get_db)
+):
+    host = (frontend_origin or request.headers.get("referer") or "/").rstrip('/')
+    redirect_url = f"{host}/sign_in/"
+    
+    response = RedirectResponse(url=redirect_url, status_code=303)
+    session_id = request.cookies.get("session_id")
+
+    if session_id:
+        try:
+            db.query(Session).filter(Session.id == session_id).delete()
+            db.commit()
+            print(f"Session {session_id} deleted from database.")
+        except Exception as e:
+            print(f"Error deleting session: {e}")
+            db.rollback()
+
+    response.delete_cookie(
+        key="session_id",
+        path="/",
+        domain=None,
+        httponly=settings.cookie_httponly,
+        samesite="lax"
+    )
+
+    return response