app/dependencies/users_token.py

@@ -10,13 +10,76 @@ from passlib.context import CryptContext
 from ..models import users, token
 from ..dependencies import database, cookie
 
+from authlib.integrations.starlette_client import OAuth
+import httpx
+
 SECRET_KEY = "09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7"
 ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
 
 pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
 
+oauth = OAuth()
+oauth.register(
+    name="google",
+    client_id="GOOGLE_CLIENT_ID",
+    client_secret="GOOGLE_CLIENT_SECRET",
+    authorize_url="https://accounts.google.com/o/oauth2/auth",
+    access_token_url="https://oauth2.googleapis.com/token",
+    client_kwargs={"scope": "openid email profile"},
+)
+
+oauth.register(
+    name="facebook",
+    client_id="FACEBOOK_CLIENT_ID",
+    client_secret="FACEBOOK_CLIENT_SECRET",
+    authorize_url="https://www.facebook.com/v12.0/dialog/oauth",
+    access_token_url="https://graph.facebook.com/v12.0/oauth/access_token",
+    client_kwargs={"scope": "email public_profile"},
+)
+
 oauth2_scheme = cookie.OAuth2PasswordBearerWithCookie(tokenUrl="token")
 
+def create_access_token(data: dict, expires_delta: timedelta | None = None):
+    to_encode = data.copy()
+    expire = datetime.utcnow() + (expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES))
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+async def authenticate_oauth(provider: str, token: str):
+    """Validate OAuth token and get user info."""
+    if provider == "google":
+        url = f"https://www.googleapis.com/oauth2/v3/userinfo?access_token={token}"
+    elif provider == "facebook":
+        url = f"https://graph.facebook.com/me?fields=id,name,email,picture&access_token={token}"
+    else:
+        raise HTTPException(status_code=400, detail="Unsupported provider")
+
+    async with httpx.AsyncClient() as client:
+        response = await client.get(url)
+        if response.status_code != 200:
+            raise HTTPException(status_code=400, detail="Invalid OAuth token")
+
+    user_info = response.json()
+    email = user_info.get("email")
+    if not email:
+        raise HTTPException(status_code=400, detail="Email not provided by provider")
+
+    user_repository = users.UserRepository(database=database.database)
+    user = user_repository.find_one_by({'email': email})
+
+    if not user:
+        user = users.User(
+            username=email,
+            email=email,
+            profile_picture=user_info.get("picture", {}).get("data", {}).get("url", ""),
+            status=1,
+        )
+        user_repository.save(user)
+
+    return user
+
 def verify_password(plain_password, hashed_password):
     return pwd_context.verify(plain_password, hashed_password)
 

app/routers/token.py

@@ -11,6 +11,27 @@ from ..models import token, users
 router = APIRouter()
 ACCESS_TOKEN_EXPIRE_MINUTES = 30
 
+@router.post("/oauth/{provider}", tags=["token"])
+async def oauth_login(provider: str, token: str):
+    """Handles OAuth login via Google/Facebook."""
+    user = await users_token.authenticate_oauth(provider, token)
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid authentication"
+        )
+
+    access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    access_token = users_token.create_access_token(
+        data={"sub": user.username}, expires_delta=access_token_expires
+    )
+    
+    content = {"roles": user.roles, "message": "OAuth login successful"}
+    response = JSONResponse(content=content)
+    response.set_cookie(key="access_token", value=f"Bearer {access_token}", httponly=True)
+    return response
+
+
 @router.post("/token", tags=["token"])
 async def login_for_access_token(
     form_data: Annotated[OAuth2PasswordRequestForm, Depends()]):

requierements.txt

@@ -5,4 +5,5 @@ python-jose[cryptography]
 passlib[bcrypt]
 python-multipart
 fastapi-mail
-redis
+redis
+authlib