def decorator(*args, **kwargs):

    token = None

    if 'Authorization' in request.headers:
        token = request.headers['Authorization'].split(' ')[1]

    if not token:
        return jsonify({'message': 'a valid token is missing'})

    try:
        data = jwt.decode(token.encode('UTF-8'), 'SECRET', algorithm='HS256')
        print("logged in user is ")
        print(data)
    except Exception as e:
        print(e)
        return jsonify({'message': 'token is invalid'})
    return f(*args, **kwargs)