Google Apps - How to get all files name from current directory? - google-apps-script

Question

How I can get all files name from current directory?
I have a code
function showAllFollderFronRoot() {
// get all files from the ROOT folder
var files = parentFolder;
while (files.hasNext()) {
var file = files.next();
// Logger.log(file.getName());
DocumentApp.getUi().alert(file.getName());
}
}
But it work only with ROOT dir.
How I can get all file names in array in current dir?
UPDATE:
I have a file structure: MT/MT.100-107/MT.100-1007.1001.doc
I need make code, if somebody open New Template from Docs - script need automatically safe this file with true structure - with next filename + 1 (example MT.100-1007.1002.doc, next new file from Template - MT.100-1007.1003.doc ...)
Script need to find all filenames => show last bigger count (1002.doc) => count + 1 => save this file with new filename MT.100-1007.1003.doc
My code work, but it make tmp file in Root dir & not work perfect, because it not calculate last bigger count in current dir and if I delete file, example MT.100-1007.1003.doc in dir MT, and make new file in dir UA - count be MT.100-1007.1004.doc no matter what the names of the files are in the folder UA.
These script with mistakes, how I can fix it?
/**
* #OnlyCurrentDoc
*/
function saveFilename() {
// Get current file name
const ui = DocumentApp.getUi(),
doc = DocumentApp.getActiveDocument(), //Added
thisFileId = doc.getId(),
thisFileName = doc.getName();
const thisFile = DriveApp.getFileById(thisFileId);//Modified from getFolderById
const parentFolder = thisFile.getParents();
const currentFolder = parentFolder.next();//Modified from currentFolderName
const currentFolderName = currentFolder.getName();//Added
//ui.alert(currentFolderName);
/*Store a init file in root to getLatestFileNumber*/
var initIter = DriveApp.getFilesByName(currentFolderName + 'init00'),
initBool = initIter.hasNext(),
init;
if (!initBool) {
init = DriveApp.createFile(currentFolderName + 'init000', '0');
} else {
init = initIter.next();
}
/*Get current Number and format it to 4 digits*/
var currentNum = init.getBlob().getDataAsString() * 1 + 1,
formatNum = ('0000' + currentNum).substr(-3);
/*If filename already contains folderName, do nothing*/
if (!(thisFileName.search(currentFolderName) + 1)) {
doc.setName(currentFolderName +'.' + formatNum).saveAndClose();
init.setContent(currentNum);
}
// delete TMP file from ROOT dir
DriveApp.getFileById(init.getId()).setTrashed(true)
}

Answer 1

You want to retrieve filenames of all files in the parent folder of the active document.
If my understanding is correct, how about this answer?
Flow:
The flow of this script is as follows.
Retrieve file ID of the active document.
Retrieve parent folder ID of the active document.
Retrieve files in the parent folder ID.
Retrieve filenames of files.
Modified script:
function showAllFollderFronRoot() {
var fileId = DocumentApp.getActiveDocument().getId();
var parentFolderId = DriveApp.getFileById(fileId).getParents().next().getId();
var files = DriveApp.getFolderById(parentFolderId).getFiles();
while (files.hasNext()) {
var file = files.next();
Logger.log(file.getName())
}
}
Note:
This sample script supposes as follows.
The parent of the active document is only one.
All files in the parent folder of the active document are retrieved. But the folders are not retrieved.
References:
getId()
getParents()
getFolderById(id)
getFiles()
If I misunderstand your question, please tell me. I would like to modify it.

Answer 2

I fix this problem, but idk how to parse last 4 digits in filename and find MAX from it. Do you have any idea? method slice(4) not working in apps script :(
function currFiles() {
const ui = DocumentApp.getUi(),
doc = DocumentApp.getActiveDocument(),
thisFileId = doc.getId(),
thisFileName = doc.getName();
const thisFile = DriveApp.getFileById(thisFileId);
const parentFolder = thisFile.getParents();
const currentFolder = parentFolder.next();
const currentFolderName = currentFolder.getName();
const currentFolderId = currentFolder.getId();
// get all files in currentFolder
var folderId = currentFolderId;
// Log the name of every file in the folder.
var files = DriveApp.getFolderById(folderId).getFiles();
while (files.hasNext()) {
var file = files.next();
Logger.log(file.getName());
}
}