b078a91dd3
- Setup project structure and FastAPI application - Create SQLAlchemy models for users, products, carts, and orders - Implement Alembic migrations - Add CRUD operations and endpoints for all resources - Setup authentication with JWT - Add role-based access control - Update documentation
107 lines
2.6 KiB
Python
107 lines
2.6 KiB
Python
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.crud.user import user as user_crud
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from app.db.session import SessionLocal
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from app.models.user import User
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from app.schemas.token import TokenPayload
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reusable_oauth2 = OAuth2PasswordBearer(tokenUrl=f"{settings.API_V1_STR}/auth/login")
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def get_db() -> Generator:
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"""
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Dependency function that yields a SQLAlchemy database session.
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The session is closed after the request is complete.
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"""
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try:
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db = SessionLocal()
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yield db
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finally:
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db.close()
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def get_current_user(
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db: Session = Depends(get_db), token: str = Depends(reusable_oauth2)
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) -> User:
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"""
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Decode JWT token to get user identity and fetch user object from database.
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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 object
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Raises:
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HTTPException: If token is invalid or user not found
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"""
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try:
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payload = jwt.decode(token, settings.SECRET_KEY, algorithms=["HS256"])
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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 = user_crud.get(db, id=token_data.sub)
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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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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 current user is active.
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Args:
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current_user: Current user
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Returns:
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User object
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Raises:
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HTTPException: If user is inactive
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"""
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if not user_crud.is_active(current_user):
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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_active_superuser(
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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 current user is a superuser.
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Args:
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current_user: Current user
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Returns:
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User object
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Raises:
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HTTPException: If user is not a superuser
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"""
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if not user_crud.is_superuser(current_user):
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="The user doesn't have enough privileges",
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)
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return current_user
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