Calculate an impression weighted quality score average for a Bing Ads PPC account

Bing Ads - Account Quality Score

function main() {
    
    var time = "LAST_30_DAYS";
    var totalImpressions = 0;
    var totalQs = 0;

    var iterator = BingAdsApp.campaigns().forDateRange(time).withCondition("Impressions > 0").get();

    while(iterator.hasNext()) {
        var campaign = iterator.next();
        var impressions = campaign.getStats().getImpressions();
        totalImpressions += impressions;

    }
    Logger.log("The account had " + totalImpressions + " impressions (" + time + ")");


    var kwIter = BingAdsApp.keywords().forDateRange(time).withCondition("Impressions > 0").get();

    while(kwIter.hasNext()) {
        var keyword = kwIter.next();
        var kwText = keyword.getText();
        var impressions = keyword.getStats().getImpressions();
        var qs = keyword.getQualityScore();
        var qsContribution = qs / totalImpressions * 100;
        Logger.log(kwText + " " + impressions + " " + qs + " " + qsContribution);
        totalQs += qsContribution;
    }

    Logger.log("Account QS: " + totalQs);


}