VAT Checker Apps Script - rest

Question

I'm trying to make VAT checker in Google Apps script, to use in a Google Sheet. My code looks like this:
function VATChecker(input1, input2) {
var country = input1
var VATid = input2
// Builds the VIES URL
const VATUrl = `https://ec.europa.eu/taxation_customs/vies/rest-api/ms/${country}/vat/${VATid}`;
const encodedVATUrl = encodeURI(VATUrl);
// Fetches & parses the URL
const fetchRequest = UrlFetchApp.fetch(encodedVATUrl);
const results = JSON.parse(fetchRequest.getContentText());
// Returns the Data
var data = [];
results.data.forEach(function(pieceOfData){
data.push(String(pieceOfData.isValid));
});
if (data = true)
return "VALID";
else
return "NOT VALID";
For now it's giving me the following error in the cell with the function:
TypeError: Cannot read property 'forEach' of undefined (line 20).
When manually creating the URL, this is the data that is returned
{
"isValid" : true,
"requestDate" : "2022-09-29T08:42:50.353Z",
"userError" : "VALID",
"name" : "MVI E-COM B.V.",
"address" : "\nTRASMOLENLAAN 00012\n3447GZ WOERDEN\n",
"requestIdentifier" : "",
"vatNumber" : "861876295B01",
"viesApproximate" : {
"name" : "---",
"street" : "---",
"postalCode" : "---",
"city" : "---",
"companyType" : "---",
"matchName" : 3,
"matchStreet" : 3,
"matchPostalCode" : 3,
"matchCity" : 3,
"matchCompanyType" : 3
}
}
Any suggestions?

Answer 1

There is no array returned and also object property data. So you can get the isValid directly from results:
/**
* Returns valid or invalid check on VAT number
*
* #param {string} vat The VAT id.
* #param {string} country the ISO2 country id. Default is NL
* #return {string} valid / not valid
* #customfunction
*/
function VATChecker(vat, country = "NL") {
// Builds the VIES URL
const url = `https://ec.europa.eu/taxation_customs/vies/rest-api/ms/${country}/vat/${vat}`;
// Fetches & parses the URL
const fetchRequest = UrlFetchApp.fetch(url);
const result = JSON.parse(fetchRequest.getContentText());
return (result.isValid) ? "VALID" : "NOT VALID"
}
function testVatInCodeEditor(){
console.log(VATChecker("003177397B01"))
}
Succes met het implementeren!