
- Set up FastAPI application with SQLite database - Create User model with email and password fields - Implement JWT token-based authentication - Add user registration and login endpoints - Create protected user profile endpoints - Configure Alembic for database migrations - Add password hashing with bcrypt - Include CORS middleware and health endpoint - Update README with setup and usage instructions Environment variables required: - SECRET_KEY: JWT secret key for token signing
87 lines
3.1 KiB
Python
87 lines
3.1 KiB
Python
from datetime import timedelta
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from fastapi import APIRouter, Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
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from sqlalchemy.orm import Session
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from jose import JWTError, jwt
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from app.core.security import (
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ALGORITHM,
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SECRET_KEY,
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create_access_token,
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get_password_hash,
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verify_password,
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)
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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.user import Token, TokenData, UserCreate, User as UserSchema
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router = APIRouter()
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="api/v1/auth/login")
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def get_user_by_email(db: Session, email: str):
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return db.query(User).filter(User.email == email).first()
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def authenticate_user(db: Session, email: str, password: str):
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user = get_user_by_email(db, email)
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if not user:
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return False
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if not verify_password(password, user.hashed_password):
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return False
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return user
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def create_user(db: Session, user: UserCreate):
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hashed_password = get_password_hash(user.password)
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db_user = User(
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email=user.email,
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hashed_password=hashed_password
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)
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db.add(db_user)
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db.commit()
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db.refresh(db_user)
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return db_user
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async def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)):
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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(token, SECRET_KEY, algorithms=[ALGORITHM])
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email: str = payload.get("sub")
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if email is None:
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raise credentials_exception
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token_data = TokenData(email=email)
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except JWTError:
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raise credentials_exception
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user = get_user_by_email(db, email=token_data.email)
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if user is None:
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raise credentials_exception
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return user
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async def get_current_active_user(current_user: User = Depends(get_current_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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@router.post("/register", response_model=UserSchema)
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def register(user: UserCreate, db: Session = Depends(get_db)):
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db_user = get_user_by_email(db, email=user.email)
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if db_user:
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raise HTTPException(status_code=400, detail="Email already registered")
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return create_user(db=db, user=user)
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@router.post("/login", response_model=Token)
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def login_for_access_token(form_data: OAuth2PasswordRequestForm = Depends(), db: Session = Depends(get_db)):
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user = authenticate_user(db, form_data.username, form_data.password)
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if not user:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Incorrect email or password",
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headers={"WWW-Authenticate": "Bearer"},
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)
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access_token_expires = timedelta(minutes=30)
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access_token = create_access_token(
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subject=user.email, expires_delta=access_token_expires
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)
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return {"access_token": access_token, "token_type": "bearer"} |