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from passlib.context import CryptContext
from fastapi.security import OAuth2PasswordBearer
from fastapi import Depends, HTTPException
from datetime import timedelta, datetime
from jose import JWTError, jwt
from core.config import get_settings
from sqlalchemy.orm import Session
from core.database import get_db
settings = get_settings()
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
oauth2scheme = OAuth2PasswordBearer(tokenUrl="auth/token/")
def get_password_hash(password):
return pwd_context.hash(password)
def verify_password(plain_password, hashed_password):
return pwd_context.verify(plain_password, hashed_password)
async def create_access_token(data:dict, expiry:timedelta):
payload = data.copy()
expire = datetime.utcnow() + expiry
payload.update({"exp": expire})
token = jwt.encode(payload,
settings.JWT_SECRET_KEY,
algorithm=settings.JWT_ALGORITHM)
return token
async def create_refresh_token(data:dict):
payload = data.copy()
token = jwt.encode(payload,
settings.JWT_SECRET_KEY,
algorithm=settings.JWT_ALGORITHM)
return token
def get_token_payload(token:str):
try:
payload = jwt.decode(token,
settings.JWT_SECRET_KEY,
algorithms=[settings.JWT_ALGORITHM])
return payload
except JWTError:
return None
async def get_current_user(token: str = Depends(oauth2scheme), db: Session = Depends(get_db)):
from users.services import get_user_by_email # Local import
try:
payload = get_token_payload(token)
email = payload.get("sub")
if email is None:
raise HTTPException(status_code=401,
detail="Invalid Token",
headers={"WWW-Authenticate": "Bearer"})
except JWTError:
raise HTTPException(status_code=401,
detail="Invalid Token",
headers={"WWW-Authenticate": "Bearer"}
)
user = get_user_by_email(email, db=db)
if user is None:
raise HTTPException(status_code=401,
detail="User not found",
headers={"WWW-Authenticate": "Bearer"}
)
return user
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