96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
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.database import get_db
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from app.core.security import verify_password
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from app.models.user import User, UserRole
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from app.schemas.user import TokenPayload
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# OAuth2 password bearer flow for token authentication
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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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Validate the access token and return the current user.
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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, detail="User not found"
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)
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if not user.is_active:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN, detail="Inactive user"
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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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Check if the user is active.
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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_403_FORBIDDEN, detail="Inactive user"
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)
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return current_user
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def get_current_seller(
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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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Check if the user is a seller.
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"""
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if current_user.role != UserRole.SELLER and current_user.role != UserRole.ADMIN:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="Operation requires seller privileges"
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)
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return current_user
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def get_current_admin(
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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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Check if the user is an admin.
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"""
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if current_user.role != UserRole.ADMIN:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="Operation requires admin privileges"
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)
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return current_user
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def authenticate_user(db: Session, email: str, password: str) -> User:
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"""
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Authenticate a user by email and password.
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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
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