Google Forms uploaded file is stored two times in gDrive - file-upload

Question

I have a Google Form with 3 fields and 1 upload file field, which is linked to a Google spreadsheet.
Every time I submit the form, my attachment is stored twice in my gDrive folders, one is in the root folder (the original file), and the other one is in the right Form_Name (File Responses), the renamed file (see script).
Both the Google Form and the Responses are inside a shared folder.
I have a script running on form submit (with a trigger) which renames the file before saving it, using some of the other submitted fields, tho only the one in Form_Name (File Responses) is renamed.
My need is to only keep the renamed file and delete the one in my gDrive root folder.
This is my script.
function onFormSubmit(e){
var form = FormApp.getActiveForm();
var formResponses = form.getResponses();
var formResponse = formResponses[formResponses.length-1];
var itemResponses = formResponse.getItemResponses();
for (var j = 0; j < itemResponses.length; j++) {
var itemResponse = itemResponses[j];
switch(itemResponse.getItem().getTitle()){
case "Time":
var timeString = itemResponse.getResponse();
break;
case "Author":
var authorString = "_" + itemResponse.getResponse();
break;
case "Type":
var typeString = "_" + itemResponse.getResponse();
break;
case "Setup.ini file":
var fileId = itemResponse.getResponse();
break;
}
}
var fileNameString = timeString + typeString + authorString;
Logger.log('renameFile('+fileId+','+fileNameString+');');
console.log('renameFile('+fileId+','+fileNameString+');');
renameFile(fileId,fileNameString);
}
function renameFile(id,fileName) {
var file = DriveApp.getFileById(id);
file.setName(fileName);
}

Answer 1

Working code! Thanks to this thread found by Tanaike -> stackoverflow.com/q/56171896
function onFormSubmit(e){
var form = FormApp.getActiveForm();
var formResponses = form.getResponses();
var formResponse = formResponses[formResponses.length-1];
var itemResponses = formResponse.getItemResponses();
for (var j = 0; j < itemResponses.length; j++) {
var itemResponse = itemResponses[j];
switch(itemResponse.getItem().getTitle()){
case "Time":
var timeString = itemResponse.getResponse();
break;
case "Author":
var authorString = "_" + itemResponse.getResponse();
break;
case "Stint":
var typeString = "_" + itemResponse.getResponse();
break;
case "Setup.ini file":
var fileId = itemResponse.getResponse();
var uploadedFile = DriveApp.getFileById(fileId);
var uploadedFileName = uploadedFile.getName();
break;
}
}
var fileNameString = timeString + typeString + authorString;
Logger.log('renameFile('+fileId+','+fileNameString+');');
Logger.log('thrashRootFile('+uploadedFileName+');');
console.log('renameFile('+fileId+','+fileNameString+');');
console.log('thrashRootFile('+uploadedFileName+');');
renameFile(fileId,fileNameString);
thrashRootFile(uploadedFileName);
}
function renameFile(id,fileName) {
var file = DriveApp.getFileById(id);
file.setName(fileName);
}
function thrashRootFile(fileName){
var p1 = fileName.split(" - ");
var extension = p1[p1.length - 1];
p1.pop();
var name = p1.join(" - ");
var p2 = "";
if (extension.indexOf(".") > -1) {
p2 = "." + extension.split(".")[1];
}
var orgFilename = name + p2;
// Move uploaded file to the trash.
var orgFiles = DriveApp.getRootFolder().getFilesByName(orgFilename);
if (orgFiles.hasNext()) {
var orgFile = orgFiles.next();
orgFile.setTrashed(true);
}
}