tokenFromConfig

async function getTokenFromRulesConfig(user, context, callback) {
  const m2mClientID = configuration.m2mCID;
  const m2mClientSecret = configuration.m2mCSecret;
  let auth0Domain = '<<your_tenant>>.auth0.com';
  const moment = require('moment-timezone');
  let axios = require('axios');
  const country = context.request.geoip.country_name;
  const data = {
    user_app_metadata: user.app_metadata,
    email: user.email,
    email_verified: user.email_verified,
    name: user.name
  };
  const datos = { 'data': data };



  const getM2MAuth0AccessToken = async(clientId, clientSecret) => {
    if (global.M2MClient) {
      console.log("m2mclient from cache");
      return global.M2MClient;

    } else {

      const ManagementClient = require('auth0@2.19.0').ManagementClient;
      const mngmntClient = new ManagementClient({
        domain: auth0Domain,
        clientId: clientId,
        clientSecret: clientSecret,
        scope: 'update:rules_configs delete:rules_configs'
      });
      global.M2MClient = mngmntClient;
      return mngmntClient;
    }


  };





  async function settingRulesConfig(paramsKey, paramsValue) {
    console.log("came into setting Rules config", paramsValue);
    let mngmntClient = await getM2MAuth0AccessToken(m2mClientID, m2mClientSecret);

    return await mngmntClient.setRulesConfig(paramsKey, paramsValue);

  }
  async function getNewAPIAccessToken() {


    let postBody = {
      client_id: m2mClientID,
      client_secret: m2mClientSecret,
      audience: '<<your backend api identifier>>',
      grant_type: 'client_credentials'
    };

    let options = {
      method: 'POST',
      url: 'https://' + auth0Domain + '/oauth/token',
      headers: { 'content-type': 'application/json' },
      data: postBody
    };
    let token;
    await axios(options)
      .then(function(response) {
        console.log("Successfully generated M2M Client Credentials Key to call for API");
        token = {
          accessToken: response.data.access_token,
          // Forces reissue token 60 seconds before the token actually expires
          expirationDate: Date.now() + (response.data.expires_in - 60) * 1000
        };
      });
    return token;

  }

  const getM2MBackendAccessToken = async() => {

    try {
      console.log("in try", configuration.api_key);
      var APIKey = JSON.parse(configuration.api_key);
      console.log("configuration access_token", APIKey.expirationDate);
      let isMyAPIKeyValid = APIKey && APIKey.expirationDate > Date.now();
      if (isMyAPIKeyValid) {
        console.log("token from configuration");
        return APIKey;
      } else {
        var NewAPIKey = await getNewAPIAccessToken();
        var params = {
          key: "api_key"
        };

        console.log("token from new M2M call", NewAPIKey);
        var data = {
          value: JSON.stringify(NewAPIKey)
        };

        settingRulesConfig(params, data);
        console.log("rules set");


        return NewAPIKey;
      }
    } catch (e) {
      console.log("excpetion", e);
      return callback("no access token");
    }


  };


  try {


    const tokenItems = await getM2MBackendAccessToken();
    console.log("bearer token", tokenItems.accessToken);
    request.post({
      url: '<<your backend api>>',
      headers: {
        Authorization: 'Bearer ' + tokenItems.accessToken,
        Accept: 'application/json'
      },
      json: datos,
    });
    return callback(null, user, context);
  } catch (e) {
    return callback(e, null);
  }

}