Files
Scraperr/api/backend/auth/auth_utils.py
2024-07-06 22:40:47 -05:00

102 lines
2.5 KiB
Python

# STL
import os
from typing import Any, Optional
from datetime import datetime, timedelta
# PDM
from jose import JWTError, jwt
from dotenv import load_dotenv
from fastapi import Depends, HTTPException, status
from passlib.context import CryptContext
from fastapi.security import OAuth2PasswordBearer
# LOCAL
from api.backend.schemas import User, UserInDB, TokenData
from api.backend.database import get_user_collection
_ = load_dotenv()
SECRET_KEY = os.getenv("SECRET_KEY") or ""
ALGORITHM = os.getenv("ALGORITHM") or ""
ACCESS_TOKEN_EXPIRE_MINUTES = os.getenv("ACCESS_TOKEN_EXPIRE_MINUTES")
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="auth/token")
def verify_password(plain_password: str, hashed_password: str):
return pwd_context.verify(plain_password, hashed_password)
def get_password_hash(password: str):
return pwd_context.hash(password)
async def get_user(email: str):
user_collection = get_user_collection()
user = await user_collection.find_one({"email": email})
if not user:
return
return UserInDB(**user)
async def authenticate_user(email: str, password: str):
user = await get_user(email)
if not user:
return False
if not verify_password(password, user.hashed_password):
return False
return user
def create_access_token(
data: dict[str, Any], expires_delta: Optional[timedelta] = None
):
to_encode = data.copy()
if expires_delta:
expire = datetime.now() + expires_delta
else:
expire = datetime.now() + timedelta(minutes=15)
to_encode.update({"exp": expire})
encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
return encoded_jwt
async def get_current_user(token: str = Depends(oauth2_scheme)):
credentials_exception = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Bearer"},
)
try:
payload: Optional[dict[str, Any]] = jwt.decode(
token, SECRET_KEY, algorithms=[ALGORITHM]
)
if not payload:
raise credentials_exception
email = payload.get("sub")
if email is None:
raise credentials_exception
token_data = TokenData(email=email)
except JWTError:
raise credentials_exception
user = await get_user(email=token_data.email)
if user is None:
raise credentials_exception
return user