74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
from datetime import datetime
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from typing import Optional
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from fastapi import Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer
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from jose import JWTError, jwt
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from pydantic import ValidationError
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from sqlalchemy.orm import Session
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from app.core.config import settings
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from app.core.security import verify_password
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from app.crud.user import get_user_by_email
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from app.db.session import get_db
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from app.models.user import User
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from app.schemas.auth import TokenPayload
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# OAuth2 scheme for token authentication
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oauth2_scheme = OAuth2PasswordBearer(
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tokenUrl=f"{settings.API_V1_STR}/auth/login"
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)
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def authenticate_user(db: Session, email: str, password: str) -> Optional[User]:
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"""Authenticate a user by email and password."""
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user = get_user_by_email(db, email=email)
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if not user:
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return None
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if not verify_password(password, user.hashed_password):
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return None
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return user
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def get_current_user(
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db: Session = Depends(get_db), token: str = Depends(oauth2_scheme)
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) -> User:
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"""Get the current authenticated user from the token."""
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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try:
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payload = jwt.decode(
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token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM]
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)
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token_data = TokenPayload(**payload)
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if token_data.sub is None:
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raise credentials_exception
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# Check token expiration
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if datetime.fromtimestamp(payload.get("exp")) < datetime.now():
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raise credentials_exception
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except (JWTError, ValidationError):
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raise credentials_exception
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user = db.query(User).filter(User.id == token_data.sub).first()
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if user is None:
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raise credentials_exception
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if not user.is_active:
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raise HTTPException(status_code=400, detail="Inactive user")
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return user
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def get_current_active_user(current_user: User = Depends(get_current_user)) -> User:
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"""Get the current active user."""
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if not current_user.is_active:
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raise HTTPException(status_code=400, detail="Inactive user")
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return current_user
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def get_current_active_superuser(current_user: User = Depends(get_current_user)) -> User:
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"""Get the current active superuser."""
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if not current_user.is_superuser:
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raise HTTPException(
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status_code=403, detail="The user doesn't have enough privileges"
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)
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return current_user |