mirror of
https://github.com/FutureOfMedTech-FITM-hack/backend.git
synced 2024-11-10 17:36:33 +03:00
98 lines
2.9 KiB
Python
98 lines
2.9 KiB
Python
from datetime import datetime, timedelta
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from typing import Any
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from decouple import config
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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 passlib.context import CryptContext
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from sqlalchemy.ext.asyncio import AsyncSession
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from med_backend.auth.schemas import TokenData, User
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from med_backend.db.dependencies import get_db_session
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from med_backend.settings import settings
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from med_backend.users.crud import get_user_by_email
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SECRET_KEY = config("SECRET")
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JWT_ALGORITHM = settings.JWT_ALGORITHM
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ACCESS_TOKEN_EXPIRE_MINUTES = settings.JWT_EAT
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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return pwd_context.verify(plain_password, hashed_password)
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def get_password_hash(password: str) -> str:
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return pwd_context.hash(password)
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async def get_user(session: AsyncSession, email: str) -> User:
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db_user = await get_user_by_email(session, email=email)
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if db_user is None:
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raise HTTPException(status_code=404, detail="User not found")
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return db_user
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async def authenticate_user(
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db: AsyncSession,
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username: str,
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password: str,
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) -> bool | User:
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user = await get_user(db, username)
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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_access_token(
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data: dict[str, Any],
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expires_delta: timedelta | None = None,
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) -> str:
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to_encode = data.copy()
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# TODO: set datetime in settings
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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=JWT_ALGORITHM)
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return encoded_jwt
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async def get_current_user(
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token: str = Depends(oauth2_scheme),
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session: AsyncSession = Depends(get_db_session),
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) -> 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=[JWT_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 = await get_user(session, 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(
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current_user: User = Depends(get_current_user),
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) -> User:
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if current_user.disabled:
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raise HTTPException(status_code=400, detail="Inactive user")
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return current_user
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