Quality Score history logger

/**
 * Goodlabs Google Ads Script: Quality Score Tracker
 * Schedule: Daily at 05:00
 */
var CONFIG = {
  SPREADSHEET_URL: "https://docs.google.com/spreadsheets/d/YOUR_SHEET_ID/edit",
  MIN_IMPRESSIONS: 10
};

function main() {
  var report = AdsApp.report(
    "SELECT Criteria, CampaignName, AdGroupName, QualityScore, SearchPredictedCtr, CreativeQualityScore, PostClickQualityScore " +
    "FROM KEYWORDS_PERFORMANCE_REPORT " +
    "WHERE Status = ENABLED AND Impressions > " + CONFIG.MIN_IMPRESSIONS + " " +
    "DURING YESTERDAY"
  );

  var ss = SpreadsheetApp.openByUrl(CONFIG.SPREADSHEET_URL);
  var sheet = ss.getSheetByName("QS_Log") || ss.insertSheet("QS_Log");
  if (sheet.getLastRow() === 0) {
    sheet.appendRow(["Date", "Keyword", "Campaign", "Ad Group", "Quality Score", "Expected CTR", "Ad Relevance", "Landing Page Exp"]);
  }

  var rows = report.rows();
  var batch = [];
  var dateStr = Utilities.formatDate(new Date(), "GMT", "yyyy-MM-dd");

  while (rows.hasNext()) {
    var row = rows.next();
    batch.push([
      dateStr,
      row["Criteria"],
      row["CampaignName"],
      row["AdGroupName"],
      row["QualityScore"],
      row["SearchPredictedCtr"],
      row["CreativeQualityScore"],
      row["PostClickQualityScore"]
    ]);
  }

  if (batch.length > 0) {
    sheet.getRange(sheet.getLastRow() + 1, 1, batch.length, 8).setValues(batch);
  }
}