feat: Implement JWT refresh token endpoint and update OAuth routing

be/app/api/auth/oauth.py

@@ -1,11 +1,12 @@
-from fastapi import APIRouter, Depends, Request
+from fastapi import APIRouter, Depends, Request, HTTPException, status
-from fastapi.responses import RedirectResponse
+from fastapi.responses import RedirectResponse, JSONResponse
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select
 from app.database import get_transactional_session
 from app.models import User
 from app.auth import oauth, fastapi_users, auth_backend, get_jwt_strategy, get_refresh_jwt_strategy
 from app.config import settings
+from fastapi.security import OAuth2PasswordRequestForm
 
 router = APIRouter()
 
@@ -93,3 +94,29 @@ async def apple_callback(request: Request, db: AsyncSession = Depends(get_transa
     redirect_url = f"{settings.FRONTEND_URL}/auth/callback?access_token={access_token}&refresh_token={refresh_token}"
 
     return RedirectResponse(url=redirect_url)
+
+@router.post('/jwt/refresh')
+async def refresh_jwt_token(request: Request):
+    data = await request.json()
+    refresh_token = data.get('refresh_token')
+    if not refresh_token:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="Missing refresh token")
+
+    refresh_strategy = get_refresh_jwt_strategy()
+    try:
+        user = await refresh_strategy.read_token(refresh_token, None)
+    except Exception:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid refresh token")
+
+    if not user:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid refresh token")
+
+    access_strategy = get_jwt_strategy()
+    access_token = await access_strategy.write_token(user)
+    # Optionally, issue a new refresh token (rotation)
+    new_refresh_token = await refresh_strategy.write_token(user)
+    return JSONResponse({
+        "access_token": access_token,
+        "refresh_token": new_refresh_token,
+        "token_type": "bearer"
+    }) 

be/app/api/v1/api.py

@@ -9,6 +9,7 @@ from app.api.v1.endpoints import ocr
 from app.api.v1.endpoints import costs
 from app.api.v1.endpoints import financials
 from app.api.v1.endpoints import chores
+from app.api.auth import oauth
 
 api_router_v1 = APIRouter()
 
@@ -21,5 +22,6 @@ api_router_v1.include_router(ocr.router, prefix="/ocr", tags=["OCR"])
 api_router_v1.include_router(costs.router, prefix="/costs", tags=["Costs"])
 api_router_v1.include_router(financials.router, prefix="/financials", tags=["Financials"])
 api_router_v1.include_router(chores.router, prefix="/chores", tags=["Chores"])
+api_router_v1.include_router(oauth.router, prefix="/auth", tags=["Auth"])
 # Add other v1 endpoint routers here later
 # e.g., api_router_v1.include_router(users.router, prefix="/users", tags=["Users"])

fe/package-lock.json

@@ -34,6 +34,7 @@
         "@types/date-fns": "^2.5.3",
         "@types/jsdom": "^21.1.7",
         "@types/node": "^22.15.17",
+        "@types/qs": "^6.14.0",
         "@vitejs/plugin-vue": "^5.2.3",
         "@vitest/eslint-plugin": "^1.1.39",
         "@vue/eslint-config-prettier": "^10.2.0",
@@ -4291,6 +4292,13 @@
       "integrity": "sha512-PIzZZlEppgrpoT2QgbnDU+MMzuR6BbCjllj0bM70lWoejMeNJAxCchxnv7J3XFkI8MpygtRpzXrIlmWUBclP5A==",
       "license": "MIT"
     },
+    "node_modules/@types/qs": {
+      "version": "6.14.0",
+      "resolved": "https://registry.npmjs.org/@types/qs/-/qs-6.14.0.tgz",
+      "integrity": "sha512-eOunJqu0K1923aExK6y8p6fsihYEn/BYuQ4g0CxAAgFc4b/ZLN4CrsRZ55srTdqoiLzU2B2evC+apEIxprEzkQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/react": {
       "version": "19.1.6",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.1.6.tgz",

fe/package.json

@@ -45,6 +45,7 @@
     "@types/date-fns": "^2.5.3",
     "@types/jsdom": "^21.1.7",
     "@types/node": "^22.15.17",
+    "@types/qs": "^6.14.0",
     "@vitejs/plugin-vue": "^5.2.3",
     "@vitest/eslint-plugin": "^1.1.39",
     "@vue/eslint-config-prettier": "^10.2.0",

fe/src/services/api.ts

@@ -58,10 +58,10 @@ api.interceptors.response.use(
           return Promise.reject(error)
         }
 
-        // Send refresh token in Authorization header as expected by backend
+        // Send refresh token in request body as expected by backend
-        const response = await api.post(API_ENDPOINTS.AUTH.REFRESH, {}, {
+        const response = await api.post(API_ENDPOINTS.AUTH.REFRESH, { refresh_token: refreshTokenValue }, {
           headers: {
-            Authorization: `Bearer ${refreshTokenValue}`
+            'Content-Type': 'application/json',
           }
         })