Get quote data from justETF

Code.gs

function GETQUOTEDATA(isin, dataPoint) {
  if (!isin) {
    return "Error: ISIN required";
  }
  
  const url = "https://www.justetf.com/api/etfs/" + isin + "/quote?currency=EUR&locale=it";
  
  try {
    const response = UrlFetchApp.fetch(url);
    const data = JSON.parse(response.getContentText());
    
    switch(dataPoint.toLowerCase()) {
      case "latest":
        return data.latestQuote.raw;
      case "previous":
        return data.previousQuote.raw;
      case "change%":
        return data.dtdPrc.raw;
      case "change":
        return data.dtdAmt.raw;
      case "venue":
        return data.quoteTradingVenue;
      case "low":
        return data.quoteLowHigh.low.raw;
      case "high":
        return data.quoteLowHigh.high.raw;
      default:
        return "Error: Invalid data point";
    }
  } catch (error) {
    return "Error fetching data";
  }
}