feat(auth): Update cookie management for refresh tokens

backend/src/ea_chatbot/api/routers/auth.py

@@ -1,7 +1,8 @@
+from typing import Optional
 from fastapi import APIRouter, Depends, HTTPException, status, Response, Request
 from fastapi.responses import RedirectResponse
 from fastapi.security import OAuth2PasswordRequestForm
-from ea_chatbot.api.utils import create_access_token, settings
+from ea_chatbot.api.utils import create_access_token, create_refresh_token, settings
 from ea_chatbot.api.dependencies import history_manager, oidc_client, get_current_user
 from ea_chatbot.history.models import User as UserDB
 from ea_chatbot.api.schemas import Token, UserCreate, UserResponse, ThemeUpdate
@@ -12,17 +13,35 @@ logger = logging.getLogger(__name__)
 
 router = APIRouter(prefix="/auth", tags=["auth"])
 
-def set_auth_cookie(response: Response, token: str):
+def set_auth_cookie(response: Response, access_token: str, refresh_token: Optional[str] = None):
+    # Set Access Token Cookie
     response.set_cookie(
         key="access_token",
-        value=token,
+        value=access_token,
         httponly=True,
-        max_age=1800,
-        expires=1800,
+        max_age=settings.access_token_expire_minutes * 60,
+        expires=settings.access_token_expire_minutes * 60,
         samesite="lax",
         secure=not settings.dev_mode,
     )
     
+    # Set Refresh Token Cookie if provided
+    if refresh_token:
+        response.set_cookie(
+            key="refresh_token",
+            value=refresh_token,
+            httponly=True,
+            max_age=settings.refresh_token_expire_days * 24 * 60 * 60,
+            expires=settings.refresh_token_expire_days * 24 * 60 * 60,
+            path=f"{settings.api_v1_str}/auth/refresh", # Only send to refresh endpoint
+            samesite="lax",
+            secure=not settings.dev_mode,
+        )
+
+def clear_auth_cookies(response: Response):
+    response.delete_cookie(key="access_token")
+    response.delete_cookie(key="refresh_token", path=f"{settings.api_v1_str}/auth/refresh")
+
 @router.post("/register", response_model=UserResponse, status_code=status.HTTP_201_CREATED)
 async def register(user_in: UserCreate, response: Response):
     """Register a new user."""

backend/src/ea_chatbot/config.py

@@ -21,6 +21,7 @@ class Settings(BaseSettings):
     log_level: str = Field(default="INFO", alias="LOG_LEVEL")
     dev_mode: bool = Field(default=False, alias="DEV_MODE")
     frontend_url: str = Field(default="http://localhost:5173", alias="FRONTEND_URL")
+    api_v1_str: str = "/api/v1"
     
     # Voter Database configuration
     db_host: str = Field(default="localhost", alias="DB_HOST")