Sitelink

function createSitelink() {
  // For full details on creating a new sitelink extension, see:
  // https://developers.google.com/google-ads/scripts/docs/reference/adsapp/adsapp_sitelinkbuilder
  const newSitelink = AdsApp.extensions().newSitelinkBuilder()
      // Replace the values below with your link link text, final url, and
      // mobile preferred
      .withLinkText('Music')                          // required
      .withFinalUrl('http://www.example.com/Music')   // required
      .withMobilePreferred(true)                      // optional
      .build()
      .getResult();

  // Add sitelink to a campaign
  const campaignIterator = AdsApp.campaigns()
      .withCondition('campaign.name = "INSERT_CAMPAIGN_NAME_HERE"')
      .get();
  if (campaignIterator.hasNext()) {
    const campaign = campaignIterator.next();
    campaign.addSitelink(newSitelink);
  }

  // Add sitelink to an ad group
  const adGroupIterator = AdsApp.adGroups()
      .withCondition('campaign.name = "INSERT_CAMPAIGN_NAME_HERE"')
      .withCondition('ad_group.name = "INSERT_AD_GROUP_NAME_HERE"')
      .get();
  if (adGroupIterator.hasNext()) {
    const adGroup = adGroupIterator.next();
    adGroup.addSitelink(newSitelink);
  }

  // Add sitelink to an account
  const account = AdsApp.currentAccount();
  account.addSitelink(newSitelink);
}

function logSitelinkDetails() {
  // Get a campaign.
  const campaignIterator = AdsApp.campaigns()
      .withCondition('campaign.name = "INSERT_CAMPAIGN_NAME_HERE"')
      .get();
  if (!campaignIterator.hasNext()) {
    throw new Error('Campaign not found.');
  }
  const campaign = campaignIterator.next();

  // Retrieve the campaign's sitelinks. Retrieving an ad group's and
  // account's sitelinks is similar.
  const sitelinkIterator = campaign.extensions().sitelinks().get();
  for (const sitelink of sitelinkIterator) {
    // You can also request reports for pre-defined date ranges. See
    // https://developers.google.com/adwords/api/docs/guides/awql,
    // DateRangeLiteral section for possible values.
    const stats = sitelink.getStatsFor('LAST_MONTH');

    console.log(`Sitelink text : ${ sitelink.getLinkText() }`);
    console.log(`final URL : ${ sitelink.urls().getFinalUrl() }`);
    console.log(`mobile preferred : ${ sitelink.isMobilePreferred() }`);
    console.log(`clicks : ${ stats.getClicks() }`);
    console.log(`impressions : ${ stats.getImpressions() }`);
    console.log('=======');
  }

  console.log(`${sitelinkIterator.totalNumEntities()} sitelinks in the campaign`);
}

function setSitelinkSchedule() {
  // Get a campaign.
  const campaignIterator = AdsApp.campaigns()
      .withCondition('campaign.name = "INSERT_CAMPAIGN_NAME_HERE"')
      .get();
  if (!campaignIterator.hasNext()) {
    throw new Error('Campaign not found.');
  }
  const campaign = campaignIterator.next();

  // Retrieve the campaign's sitelinks. Retrieving an ad group's and
  // account's saitelinks is similar.
  const sitelinkIterator = campaign.extensions().sitelinks().get();

  for (const sitelink of sitelinkIterator) {
    if (sitelink.getLinkText() === 'Music') {
      // Set sitelink schedule to run only on Mondays and Tuesdays, 9 AM to
      // 6 PM.
      const monday = {
        dayOfWeek: 'MONDAY',
        startHour: 9,
        startMinute: 0,
        endHour: 18,
        endMinute: 0
      };

      const tuesday = {
        dayOfWeek: 'TUESDAY',
        startHour: 9,
        startMinute: 0,
        endHour: 18,
        endMinute: 0
      };

      sitelink.setSchedules([monday, tuesday]);

      break;
    }
  }
}