""" Mini-Challenge """

from twisted.internet import defer

class Adapter():
    """ Adapter class

    Aufgabe: Asynchron XML-Daten lesen, konvertieren und zurückliefern.
    """

    def __init__(self, path):
        self.path = path

    def retrieve_token(self, name):
        """
            Retrieve the content from file name.xml in adapters path directory
            in a synchronous way, extract the DataReceived/Token and return it
            as a JSON-Object (stringified) '{"token": value}'.
        """
        # return '{"token": 42}' - don't do this, just a test
        raise NotImplementedError

    def retrieve_token_async(self, name):
        """
            Retrieve the content from file name.xml in adapters path directory
            in an asynchronous way, extract the DataReceived/Token and return it
            as a Deferred which ends up in a JSON-Object (as above).

            see: https://twistedmatrix.com/documents/8.0.0/api/twisted.internet.defer.Deferred.html

            Hint: The simple way is to use defer.succeed(), bonus points for doing
                  it with a callback chain read->parse->convert.
        """
        #return defer.succeed('{"token": 42}') - don't do this, just a test
        raise NotImplementedError