120 lines
3.1 KiB
Python
120 lines
3.1 KiB
Python
"""API dependencies module."""
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from typing import Generator
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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.db.session import get_db
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from app.models.user import User
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from app.schemas.token import TokenPayload
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# OAuth2 token URL
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl=f"{settings.API_V1_STR}/auth/login")
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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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"""
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Get the current user from the token.
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Args:
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db: Database session
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token: JWT token
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Returns:
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User: The authenticated user
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Raises:
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HTTPException: If the token is invalid or the user doesn't exist
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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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except (JWTError, ValidationError):
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raise 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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user = db.query(User).filter(User.id == token_data.sub).first()
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if not user:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail="User not found"
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)
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return user
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def get_current_active_user(
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current_user: User = Depends(get_current_user),
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) -> User:
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"""
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Get the current active user.
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Args:
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current_user: The authenticated user
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Returns:
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User: The active authenticated user
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Raises:
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HTTPException: If the user is inactive
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"""
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if not current_user.is_active:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail="Inactive user"
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)
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return current_user
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def get_current_active_superuser(
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current_user: User = Depends(get_current_active_user),
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) -> User:
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"""
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Get the current active superuser.
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Args:
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current_user: The authenticated active user
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Returns:
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User: The active superuser
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Raises:
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HTTPException: If the user is not a superuser
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"""
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if not current_user.is_superuser:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="Not enough permissions"
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)
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return current_user
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def authenticate_user(db: Session, email: str, password: str) -> Optional[User]:
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"""
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Authenticate a user by email and password.
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Args:
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db: Database session
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email: User email
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password: User password
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Returns:
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Optional[User]: The authenticated user or None if authentication fails
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"""
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user = db.query(User).filter(User.email == email).first()
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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 |