'''
MIT license https://opensource.org/licenses/MIT Copyright 2024 Infosys Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
'''

#  # src/privacy/util/auth/auth_jwt.py

from fastapi import Depends, HTTPException, status
from fastapi.security import HTTPBearer
import os
import jwt
from dotenv import load_dotenv
from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
from jose import jwt, ExpiredSignatureError, JWTError 
import logging
import traceback

load_dotenv()
log = logging.getLogger(__name__)
security = HTTPBearer()
secret_key = os.environ.get("SECRET_KEY")

def authenticate_jwt(credentials: HTTPAuthorizationCredentials = Depends(security)):
    token = credentials.credentials
    try:
        payload = jwt.decode(token, secret_key, algorithms=["HS256"],options={"verify_signature": False, "verify_aud": False})
    except jwt.ExpiredSignatureError:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Token expired",
            headers={"WWW-Authenticate": "Bearer"},
        )
    except jwt.JWTError:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Invalid token",
            headers={"WWW-Authenticate": "Bearer"},
        )
    
    except Exception as e:
        log.error(f"Unexpected error: {e}")
        log.error(str(traceback.extract_tb(e.__traceback__)[0].lineno))
        raise HTTPException(status_code=500, detail="Unexpected error")

    return payload

def get_auth_jwt():
    return authenticate_jwt