Master document maker

Docs-2

//CHAPTER 2 - Bound to a Google Form
function copyMasterDocument(e) {

  //Get form responses (teacher & document)  
  var itemResponses = e.response.getItemResponses();
  var teacher = itemResponses[0].getResponse();
  var document = itemResponses[1].getResponse();

  //Get file ID for document selected
  var documents = ["Lesson plan",
    "Class notes"];

  var documentIds = ["DOCUMENT ID",
    "DOCUMENT ID"];

  var position = documents.indexOf(document);
  var docId = documentIds[position];

  //Get teacher's folder ID from teacher
  var teachers = ["George Harris",
    "Jo Lennon",
    "Paul Mac"];

  var folderIds = ["FOLDER ID",
    "FOLDER ID",
    "FOLDER ID"];

  var position = teachers.indexOf(teacher);
  var folderId = folderIds[position];

  //Get master Doc and make a copy and rename  
  var doc = DriveApp.getFileById(docId);
  var tFolder = DriveApp.getFolderById(folderId);
  var copiedDoc = doc.makeCopy(document + " - " + teacher, tFolder);

  //Edit new Document - Add teacher's name to Doc
  var newDoc = DocumentApp.openById(copiedDoc.getId());
  var body = newDoc.getBody();
  var paragraphs = body.getParagraphs();

  //Append text to 3rd paragraph
  if (document === "Lesson plan") {
    paragraphs[2].appendText("Teacher: " + teacher);
  }
  //Insert paragraph at the end of the document
  else if (document === "Class notes") {
    body.insertParagraph(paragraphs.length, "Prepared by " + teacher);
  }
}