lti.py 文件源码

def second_phase_lti_launch(
) -> helpers.JSONResponse[t.Mapping[str, t.Union[str, models.Assignment, bool]]
                          ]:
    launch_params = jwt.decode(
        flask.request.headers.get('Jwt', None),
        app.config['LTI_SECRET_KEY'],
        algorithm='HS512'
    )['params']
    lti = CanvasLTI(launch_params)

    user, new_token = lti.ensure_lti_user()
    course = lti.get_course()
    assig = lti.get_assignment(user)
    lti.set_user_role(user)
    new_role_created = lti.set_user_course_role(user, course)
    db.session.commit()

    result: t.Mapping[str, t.Union[str, models.Assignment, bool]]
    result = {'assignment': assig, 'new_role_created': new_role_created}
    if new_token is not None:
        result['access_token'] = new_token

    return helpers.jsonify(result)