innopolis-fwd-project-backend

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from datetime import timedelta, datetime
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from typing import Union
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from fastapi import HTTPException
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from jose import jwt, JWTError
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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 . import crud, schemas
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SECRET_KEY = "09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7"
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 60 * 24 * 7
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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def verify_password(plain_password, hashed_password):
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    return pwd_context.verify(plain_password, hashed_password)
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def get_password_hash(password):
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    return pwd_context.hash(password)
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def authenticate_user(db: Session, email: str, password: str):
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    user = crud.get_admin_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_access_token(data: dict, expires_delta: Union[timedelta, None] = None):
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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(days=7)
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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(db: Session, token: str):
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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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        # if payload.get("exp") < datetime.utcnow():
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        #     raise JWTError
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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 = schemas.TokenData(email=email)
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    except JWTError:
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        raise credentials_exception
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    user = crud.get_admin_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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