inbox/services/auth.py

import logging
from functools import wraps

from aiohttp import ClientSession
from starlette.exceptions import HTTPException

from services.core import get_author_by_user
from services.logger import root_logger as logger
from settings import AUTH_URL

logger.setLevel(logging.DEBUG)


async def check_auth(req):
    logger.debug("checking auth...")
    user_id = ""
    try:
        token = req.headers.get("Authorization")
        if token:
            # Logging the authentication token
            query_name = "validate_jwt_token"
            operation = "ValidateToken"
            headers = {
                "Content-Type": "application/json",
            }

            variables = {
                "params": {
                    "token_type": "access_token",
                    "token": token,
                }
            }

            gql = {
                "query": f"query {operation}($params: ValidateJWTTokenInput!) {{ {query_name}(params: $params) {{ is_valid claims }} }}",
                "variables": variables,
                "operationName": operation,
            }
            # Asynchronous HTTP request to the authentication server
            async with ClientSession() as session:
                async with session.post(
                    AUTH_URL, json=gql, headers=headers
                ) as response:
                    if response.status == 200:
                        data = await response.json()
                        errors = data.get("errors")
                        if errors:
                            logger.error(f"{errors}")
                        else:
                            user_id = (
                                data.get("data", {})
                                .get(query_name, {})
                                .get("claims", {})
                                .get("sub")
                            )
                            logger.info(f"got user_id: {user_id}")
                            return user_id
    except Exception as e:
        # Handling and logging exceptions during authentication check
        logger.error(e)

    if not user_id:
        raise HTTPException(status_code=401, detail="Unauthorized")


def login_required(f):
    @wraps(f)
    async def decorated_function(*args, **kwargs):
        info = args[1]
        context = info.context
        req = context.get("request")
        user_id = await check_auth(req)
        if user_id:
            context["user_id"] = user_id.strip()
            author = get_author_by_user(user_id)
            if author and "id" in author:
                context["author_id"] = author["id"]
            else:
                logger.debug(author)
                HTTPException(status_code=401, detail="Unauthorized")
        return await f(*args, **kwargs)

    return decorated_function