149 lines
No EOL
4.4 KiB
Python
149 lines
No EOL
4.4 KiB
Python
"""
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Authentication routes for user login, registration, and token management
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"""
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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 pydantic import BaseModel, EmailStr
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from typing import Optional
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import bcrypt
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from jose import jwt
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from datetime import datetime, timedelta
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from app.database import get_db
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from app.models.user import User
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router = APIRouter()
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# JWT Configuration
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SECRET_KEY = "your-secret-key-here" # In production, use environment variable
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 30
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/auth/token")
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# Pydantic models
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class UserCreate(BaseModel):
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email: EmailStr
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username: str
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password: str
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full_name: Optional[str] = None
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class UserResponse(BaseModel):
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id: int
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email: str
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username: str
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full_name: Optional[str]
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is_active: bool
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is_verified: bool
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class Config:
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from_attributes = True
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class Token(BaseModel):
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access_token: str
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token_type: str
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# Authentication utilities
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def hash_password(password: str) -> str:
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"""Hash a password using bcrypt"""
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return bcrypt.hashpw(password.encode('utf-8'), bcrypt.gensalt()).decode('utf-8')
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def verify_password(password: str, hashed_password: str) -> bool:
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"""Verify a password against its hash"""
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return bcrypt.checkpw(password.encode('utf-8'), hashed_password.encode('utf-8'))
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def create_access_token(data: dict, expires_delta: Optional[timedelta] = None):
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"""Create a JWT access token"""
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(minutes=15)
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to_encode.update({"exp": expire})
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encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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return encoded_jwt
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async def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)):
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"""Get current authenticated user"""
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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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username: str = payload.get("sub")
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if username is None:
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raise credentials_exception
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except jwt.JWTError:
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raise credentials_exception
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user = db.query(User).filter(User.username == username).first()
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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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# Routes
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@router.post("/register", response_model=UserResponse)
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async def register_user(user_data: UserCreate, db: Session = Depends(get_db)):
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"""Register a new user"""
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# Check if user already exists
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if db.query(User).filter(User.email == user_data.email).first():
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raise HTTPException(status_code=400, detail="Email already registered")
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if db.query(User).filter(User.username == user_data.username).first():
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raise HTTPException(status_code=400, detail="Username already taken")
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# Create new user
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hashed_password = hash_password(user_data.password)
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new_user = User(
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email=user_data.email,
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username=user_data.username,
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hashed_password=hashed_password,
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full_name=user_data.full_name
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)
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db.add(new_user)
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db.commit()
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db.refresh(new_user)
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return new_user
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@router.post("/token", response_model=Token)
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async def login_for_access_token(
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form_data: OAuth2PasswordRequestForm = Depends(),
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db: Session = Depends(get_db)
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):
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"""Login and get access token"""
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user = db.query(User).filter(User.username == form_data.username).first()
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if not user or not verify_password(form_data.password, user.hashed_password):
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Incorrect username or password",
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headers={"WWW-Authenticate": "Bearer"},
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)
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access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
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access_token = create_access_token(
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data={"sub": user.username}, expires_delta=access_token_expires
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)
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return {"access_token": access_token, "token_type": "bearer"}
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@router.get("/me", response_model=UserResponse)
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async def read_users_me(current_user: User = Depends(get_current_user)):
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"""Get current user info"""
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return current_user |