Add a function to dump all the files in a folder to the active sheet

Code.ts

@@ -9,6 +9,7 @@ function onOpen() {
   ui.createMenu('CMS Document Generation')
     .addItem('Generate document for current row', 'generateForCurrentRow')
     .addItem('Generate document for all rows', 'generateForAllRows')
+    // .addItem('CAUTION! Write list of all files to current sheet', 'dumpFiles')
     .addToUi();
 }
 
@@ -17,6 +18,41 @@ type DocSection =
   | GoogleAppsScript.Document.HeaderSection
   | GoogleAppsScript.Document.FooterSection;
 
+function findAllFiles(path: string, folder: GoogleAppsScript.Drive.Folder) {
+  const out: string[][] = [];
+
+  const files = folder.getFiles();
+  while (files.hasNext()) {
+    const file = files.next();
+    if (!file.isTrashed()) {
+      out.push([
+        path,
+        file.getId(),
+        file.getName(),
+        `=HYPERLINK("${file.getUrl()}", "${file.getName()}")`,
+      ]);
+    }
+  }
+
+  const subfolders = folder.getFolders();
+  while (subfolders.hasNext()) {
+    const subfolder = subfolders.next();
+    out.push(...findAllFiles(path + '/' + subfolder.getName(), subfolder));
+  }
+
+  return out;
+}
+
+function dumpFiles() {
+  const root = DriveApp.getFolderById('1mWOQDmQjQsi8the09VXpnKnvFUzj4wiv');
+
+  const out = findAllFiles('', root);
+
+  const active_sheet = SpreadsheetApp.getActive();
+  const range = active_sheet.getRange(`R1C1:R${out.length}C${out[0].length}`);
+  range.setValues(out);
+}
+
 function copyElement(
   source_element: GoogleAppsScript.Document.Element,
   dest: DocSection,