last_state = {}

            last_state['state'] = self['state']

            last_state['sensors'] = self['sensors']

            json.dump(last_state, f, sort_keys=True)

    def add_user_present(self, username):

        if self['state']['open']:

            if 'people_now_present' not in self['sensors']:

                self['sensors']['people_now_present'] = [{'value': 0}]

            people_now_present = self['sensors']['people_now_present'][0]

            if 'names' in people_now_present and username not in people_now_present['names']:

                people_now_present['value'] += 1

                if username in current_app.config['PEOPLE_NOW_PRESENT_ALLOWED']:

                    people_now_present['names'].append(username)

            elif 'names' not in people_now_present:

                people_now_present['value'] += 1

                if username in current_app.config['PEOPLE_NOW_PRESENT_ALLOWED']:

                    people_now_present['names'] = [username]

            self['sensors']['people_now_present'][0] = people_now_present

        else:

            pass

    def remove_user_present(self, username):

        if self['state']['open'] and 'people_now_present' in self['sensors']:

            people_now_present = self['sensors']['people_now_present'][0]

            if people_now_present['value'] > 0:

                people_now_present['value'] -= 1

            if 'names' in people_now_present:

                if username in people_now_present['names']:

                    people_now_present['names'].remove(username)

                if not people_now_present['names'] or people_now_present['value'] == 0:

                    del people_now_present['names']

            self['sensors']['people_now_present'][0] = people_now_present

        else:

            pass

    def clear_user_present(self):

        if 'names' in self['sensors']['people_now_present'][0]:

            del self['sensors']['people_now_present'][0]['names']

    def send_tweet(self, value):

        tweet = random.choice(possible_open_tweets) if value else random.choice(possible_closed_tweets)

        try:

            post_tweet(tweet, self)

        except Exception as e:

            current_app.logger.error('Sending tweet failed! %s' % e,

                                     exc_info=True)

    def set_new_state(self, value=None, trigger_person=None, message=None):

        if value is not None and value != self['state']['open']:

            self['state']['open'] = value

            self.send_tweet(value)

            if not value:

                if 'people_now_present' in self['sensors']:

                    self.clear_user_present()

                if 'message' in self['state']:

                    del self['state']['message']

            if trigger_person is None:

                del self['state']['trigger_person']

            else:

                self['state']['trigger_person'] = trigger_person

            self['state']['lastchange'] = int(time())

        if message is not None:

            self['state']['message'] = message

def request_wants_json():

    best = request.accept_mimetypes.best_match(

        ['application/json', 'text/html']

    )

    return best == 'application/json' and \

        request.accept_mimetypes[best] > \

        request.accept_mimetypes['text/html']

def fuzzy_list_find(lst, key, value):

    for i, dic in enumerate(lst):