app/dependencies/users_token.py

@@ -10,12 +10,34 @@ from passlib.context import CryptContext
 from ..models import users, token
 from ..dependencies import database, cookie
 
+from authlib.integrations.starlette_client import OAuth
+import httpx, os 
+
 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=os.environ["GOOGLE_CLIENT_ID"],
+    client_secret=os.environ["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=os.environ["FACEBOOK_CLIENT_ID"],
+    client_secret=os.environ["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):
@@ -25,6 +47,38 @@ def create_access_token(data: dict, expires_delta: timedelta | None = None):
     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/events.py

@@ -84,7 +84,8 @@ async def read_events(
             status_code=status.HTTP_400_BAD_REQUEST,
             detail="`skip` should be >= 0 and `limit` should be > 0 and greater than `skip`.",
         )
-    skip = limit * skip
+    limit = limit + skip
+
     # Initialize filters
     filters = []
 
@@ -165,7 +166,7 @@ async def search_events(
             status_code=status.HTTP_400_BAD_REQUEST,
             detail="`skip` should be >= 0 and `limit` should be > 0 and greater than `skip`.",
         )
-    skip = limit * skip 
+    limit = limit + skip
 
     # Initialize filters
     filters = [{"status": {"$eq": status}}]

app/routers/token.py

@@ -1,7 +1,7 @@
 from datetime import datetime, timedelta
 
 from typing import Annotated
-from fastapi import Depends, FastAPI, HTTPException, status, APIRouter, Form
+from fastapi import Depends, FastAPI, HTTPException, status, APIRouter
 from fastapi.responses import JSONResponse
 from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
 from ..dependencies import users_token, permissions_checker
@@ -11,21 +11,38 @@ 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()],
+    form_data: Annotated[OAuth2PasswordRequestForm, Depends()]):
-    remember_me: bool = Form(False)):
     user = users_token.authenticate_user(form_data.username, form_data.password)
-    expires_access_token_time = ACCESS_TOKEN_EXPIRE_MINUTES
-    if remember_me:
-        expires_access_token_time=120
     if not user:
         raise HTTPException(
             status_code=status.HTTP_401_UNAUTHORIZED,
             detail="Incorrect username or password",
             headers={"WWW-Authenticate": "Bearer"},
         )
-    access_token_expires = timedelta(minutes=expires_access_token_time)
+    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
     )

requierements.txt

@@ -5,4 +5,6 @@ python-jose[cryptography]
 passlib[bcrypt]
 python-multipart
 fastapi-mail
-redis
+redis
+authlib
+httpx