if (!request || !request.body) {
      throw new Error(`Empty request`);
    }

    const body = request.body as TokenBody;
    if (!body.claims) {
      throw new Error(`Missing claims`);
    }
    if (!body.token) {
      throw new Error(`Missing token`);
    }

    let uid;
    if (!!request.session) {
      uid = request.session.getUserId();
      if (uid !== body.claims.user_id) {
        throw new Error('User ID does not match');
      }
    } else {
      uid = body.claims.user_id;
    }

    const sessionHandles = await Session.getAllSessionHandlesForUser(uid);
    const hasSessions = sessionHandles && sessionHandles.length > 0;

    if (hasSessions) {
      // No session is attached, but one exists, so we'll use that
      // const info = await Session.getSessionInformation(sessionHandles[0]);
    } else {
      // No session exists, so we need to create a new session
      uid = body.claims.user_id
      await Session.createNewSession(response, uid);
    }

    response.status(200).json({status: 'ok'});

createNewSession

createNewSession