Google script listing folders, subfolders and files - directory

Question

I have a google script, listing me FolderName, FolderID, Filename and FileID of a Google Drive Folder including subfolders.
However, in the first row I would need the complete Full Path to the file instead only the foldername
eg a file named abc.pdf is in the folder /documents/files/new/abc.pdf
My script is showing me the foldername new instead the full folder path /documents/files/new/
`function listFolderContents() {
var ss = SpreadsheetApp.getActive();
var sheet = SpreadsheetApp.getActiveSheet();
sheet.clearContents();
sheet.appendRow(["Foldername","FolderID","Filename","FileID"]);
var topFolderID = DriveApp.getFolderById('FOLDER_ID_HERE');
var foldername = topFolderID.getName();
var folders = DriveApp.getFoldersByName(foldername)
var folder = folders.next();
traverseFolder(folder, sheet);
sortByFoldername();
};
function traverseFolder(folder, sheet) {
listFilesInFolder(folder, sheet);
var subFolders = folder.getFolders();
while (subFolders.hasNext()) {
traverseFolder(subFolders.next(), sheet);
}
}
function listFilesInFolder(folder, sheet) {
var folderID = folder.getId();
var foldername = folder.getName();
var contents = folder.getFiles();
while(contents.hasNext()) {
var file = contents.next();
var filename = file.getName();
var fileID = file.getId();
sheet.appendRow( [foldername,folderID,filename,fileID] );
}
}
function sortByFoldername(){
var ss = SpreadsheetApp.getActive();
var sheet = ss.getSheetByName('Sheet1');
var range = sheet.getRange("A2:D");
range.sort([{column: 1, ascending: true}]);
}`

Answer 1

I finally did it!!!
This script is working as intended and will create a List with FolderName, FolderID, Filename and FileID of all Folders and Files included in a Google Drive Fiolder:
var folderId = 'FOLDERIDGOESHERE'; //Replace the folder id with the folder id of the parent folder in the Google Drive, where you would like to start sorting through the drive.
// Main function 1: List all folders, & write into the current sheet.
function listFolders(){
getFolderTree(folderId, false);
};
// Main function 2: List all files & folders, & write into the current sheet.
function listAll(){
getFolderTree(folderId, true);
};
// =================
// Get Folder Tree
function getFolderTree(folderId, listAll) {
try {
// Get folder by id
var parentFolder = DriveApp.getFolderById(folderId);
// Initialise the sheet
var file, data, sheet = SpreadsheetApp.getActiveSheet();
sheet.clear();
sheet.appendRow(["Full Path", "Folder ID", "FileName"]);
// Get files and folders
getChildFolders(parentFolder.getName(), parentFolder, data, sheet, listAll);
} catch (e) {
Logger.log(e.toString());
}
};
// Get the list of files and folders and their metadata in recursive mode
function getChildFolders(parentName, parent, data, sheet, listAll) {
var childFolders = parent.getFolders();
// List folders inside the folder
while (childFolders.hasNext()) {
var childFolder = childFolders.next();
// Logger.log("Folder Name: " + childFolder.getName());
data = [
parentName + "/" + childFolder.getName(),
childFolder.getId()
];
// Write
sheet.appendRow(data);
// List files inside the folder
var files = childFolder.getFiles();
while (listAll & files.hasNext()) {
var childFile = files.next();
// Logger.log("File Name: " + childFile.getName());
data = [
parentName + "/" + childFolder.getName(),
childFolder.getId(),
childFile.getName(),
childFile.getId()
];
// Write
sheet.appendRow(data);
}
// Recursive call of the subfolder
getChildFolders(parentName + "/" + childFolder.getName(), childFolder, data, sheet, listAll);
}
};