Find a specific Google Document in Drive - file

Question

I am trying to write a script to get the URL of a specific yet dynamic Google Document in Drive. The Google Document is created every Tuesday with its date at the end of the title of the Google Document.
"TypeError: Cannot find function getUrl in object FileIterator." error shows on line var agendaURL = file.getUrl();. Not sure how to debug this.
var ssUrl = 'LINK BUFFERED';
var sheetName = 'SHEET1'; // name of sheet to use
var rangeName = 'C30'; // range of values to include
var dateRange = SpreadsheetApp.openByUrl(ssUrl)
.getSheetByName(sheetName)
.getRange(rangeName)
.getValues();
// NEED TO find how to find file by name below!
var file = DriveApp.getFilesByName("Weekly Agenda | " +dateRange);
var agendaURL = file.getUrl();

Answer 1

It is because you need to iterate through all of the files that meet the search criteria. The solution is here: https://developers.google.com/apps-script/reference/drive/drive-app
var files = DriveApp.getFilesByName("Weekly Agenda | " +dateRange);
while (files.hasNext()) {
var file = files.next();
var agendaURL = file.getUrl();
return agendaURL //for first one, or you can return each one, push to an array, etc...
}

Answer 2

The value which got by DriveApp.getFilesByName() is FileIterator. So it is necessary to retrieve the filename from the value as follows.
var filename = "Weekly Agenda | " + dateRange;
var file = DriveApp.getFilesByName(filename);
while (file.hasNext()) {
var file = files.next();
if (file.getName() == filename) {
var agendaURL = file.getUrl();
}
}