102 lines
2.9 KiB
Python
102 lines
2.9 KiB
Python
from datetime import timedelta, datetime
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from typing import Annotated
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from fastapi import APIRouter, Depends, HTTPException
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from pydantic import BaseModel
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from passlib.context import CryptContext
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from sqlalchemy.orm import Session
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from starlette import status
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from fastapi.security import OAuth2PasswordRequestForm, OAuth2PasswordBearer
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from jose import jwt, JWTError
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from models import User
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from database import SessionLocal
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router = APIRouter(
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prefix='/auth',
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tags=['auth']
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)
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SECRET_KEY = '3b004eeae34b43bd05226f210d9bdc2ad99abdd3c52bf32802906085b762ff55'
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ALGORITHM = 'HS256'
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bcrypt_context = CryptContext(schemes=['bcrypt'], deprecated='auto')
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oauth2_bearer = OAuth2PasswordBearer(tokenUrl='auth/token')
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def get_db():
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db = SessionLocal()
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try:
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yield db
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finally:
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db.close()
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db_dependency = Annotated[Session, Depends(get_db)]
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def authenticate_user(username: str, password: str, db):
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user = db.query(User).filter(User.username == username).first()
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if not user:
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return False
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if not bcrypt_context.verify(password, user.password):
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return False
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return user
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def create_access_token(username: str, user_id: int, expires_delta: timedelta):
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encode = {'sub': username, 'id': user_id}
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expire = datetime.now() + expires_delta
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encode.update({'exp': expire})
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return jwt.encode(encode, SECRET_KEY, ALGORITHM)
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class CreateUser(BaseModel):
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username: str
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email: str
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password: str
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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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async def get_current_user(token: Annotated[str, Depends(oauth2_bearer)]):
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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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user_id: int = payload.get('id')
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if username is None or user_id is None:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Could not validate credentials")
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return {'username': username, 'user_id': user_id}
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except JWTError:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Could not validate credentials")
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@router.post('/user/create', status_code=status.HTTP_201_CREATED)
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async def create_user(db: db_dependency, data: CreateUser):
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create_user_model = User(
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username=data.username,
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email=data.email,
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password=bcrypt_context.hash(data.password),
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role='admin'
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)
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db.add(create_user_model)
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db.commit()
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@router.post('/token', status_code=status.HTTP_200_OK, response_model=Token)
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async def get_token(
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form_data: Annotated[OAuth2PasswordRequestForm, Depends()],
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db: db_dependency
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):
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user = authenticate_user(form_data.username, form_data.password, db)
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if not user:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Could not validate credentials")
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token = create_access_token(user.username, user.id, timedelta(minutes=20))
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return {'access_token': token, 'token_type': 'bearer'}
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