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google-apps-scriptgmailauthorizationsendmail

How to avoid requesting OAuth API verification to send emails using Google Scripts


This question comes from a previous one almost solved: Save a Google Form as PDF on a Drive's folder using Google Scripts

Introduction

Perhaps this is a technical question and I am not programmer, so if possible I want a step-by-step answer so I can fully understand it.

The steps and purpose of the code are explained here: Hacking it: Generate PDFs from Google Forms.

The code is posted on the link but I post it here anyways:

function onSubmit(e) {
  const rg = e.range;
  const sh = rg.getSheet();
  
  //Get all the form submitted data
  //Note: This data is dependent on the headers. If headers, are changed update these as well.
  const cName = e.namedValues['Client Name'][0];
  const cEmail = e.namedValues['Client Email'][0];
  const cAddress = e.namedValues['Client Address'][0];
  const cMobile = e.namedValues['Client Mobile'][0];
  const sendCopy = e.namedValues['Send client a copy?'][0];
  const paymentType = e.namedValues['What is your agreed upon payment schedule?'][0];
  const fixedCost = e.namedValues['What was your agreed upon cost for the project?'][0];
  const hourlyRate = e.namedValues['Hourly Rate'][0];
  const manHours = e.namedValues['Total man hours'][0];
  const services = e.namedValues['Select the services'][0];
  
  //Consequential Data
  const tax = 18.5
  var subtotal = 0;
  var taxAmt = 0;
  var payableAmt = 0;
      
  //if the user has selected hourly payment model
  //Note: Be careful that the responses match the elements on the actual form
  switch (paymentType ){
    case 'Hourly Rate':
      subtotal = hourlyRate*manHours;
      taxAmt = subtotal * (tax/100);
      payableAmt = +subtotal + +taxAmt;
      break;
    case 'Fixed Cost':
      subtotal = fixedCost;
      taxAmt = fixedCost * (tax/100)
      payableAmt = +fixedCost + +taxAmt;
      break;            
  }
  
  const invoiceID = 'IN' + Math.random().toString().substr(2, 9);
  var formattedDate = Utilities.formatDate(new Date(), "IST", "dd-MMM-yyyy");
  
  //Set the consequential data in the columns of the spreadsheet for record keeping
  //Note: These variable are dependent on the sheet's columns so if that changes, please update.
  const row = rg.getRow();
  
  const payableAmtCol = 2; //B
  const invoiceIDCol = 3; //C
  
  sh.getRange(row,payableAmtCol).setValue(payableAmt);
  sh.getRange(row,invoiceIDCol).setValue(invoiceID); 
  
  
  //Build a new invoice from the file
  //Folder and file IDs
  const invoiceFolderID = '<invoice-folder-id>';
  const invoiceFolder = DriveApp.getFolderById(invoiceFolderID);
  
  const templateFileID = '<template-id>';
  const newFilename = 'Invoice_' + invoiceID;
  
  //Make a copy of the template file
  const newInvoiceFileID = DriveApp.getFileById(templateFileID).makeCopy(newFilename, invoiceFolder).getId();;
  
  //Get the invoice body into a variable
  var document = DocumentApp.openById(newInvoiceFileID);
  var body = document.getBody();
  
  //Replace all the {{ }} text in the invoice body
  body.replaceText('{{Invoice num}}', invoiceID);
  body.replaceText('{{Date}}', formattedDate);
  body.replaceText('{{Client Name}}', cName);
  body.replaceText('{{Client Address}}', cAddress);
  body.replaceText('{{Client Mobile}}', cMobile);
  body.replaceText('{{Client Email}}', cEmail);
  body.replaceText('{{Services}}', services.split(', ').join('\n'));
  
  body.replaceText('{{Subtotal}}', subtotal);
  body.replaceText('{{Tax Value}}', taxAmt);
  body.replaceText('{{Total}}', payableAmt);
  
  //In the case of hourly rate payment type, let's add an additional message giving the rate and the man hours.
  if(paymentType.includes('Hourly Rate')){
     //It should look something like this on the invoice
     //Hourly Rate
     //Rate of Rs.1200/hour
     //Completed 50 man hours
     const message = paymentType + '\nRate of Rs.' + hourlyRate + '/hour\nCompleted ' + manHours + ' man hours';
     body.replaceText('{{Payment Type}}', message);
  } else {
    body.replaceText('{{Payment Type}}', paymentType);
  }
  
  document.saveAndClose();
  
  /* This is not useful for me
  //If you have selected to directly send it via email
  if(sendCopy.includes('Yes')){
    //send email with the file
  var attachment = DriveApp.getFileById(newInvoiceFileID);
    GmailApp.sendEmail(cEmail, '<subject>, 
                     '<body>', 
                     {attachments: [attachment.getAs(MimeType.PDF)],
                      from:'<your-email>@gmail.com'});
  }
  */
  
}

In the post, the author shows a way to send an Email to the client, which is what I want for my project.

Actual problem

However, that portion of code is obsolete or the author has completed a verification process before she publishes her app because I have to request an OAuth API verification because of the sendEmail command. As I researched, it takes time and tools that I am completely unaware of (I'm not programmer).

Thus, I ask if there is an easy way (without add-ons and avoid requesting a verification process) to send a copy of the generated document to the client when he press on "Send" button of Google Form based on the code I posted.

The code works fine, it creates a copy of the document based on a template to a folder of my Drive, but I want to automate the sending of emails so that customers get a copy of the document that I have. I don't want to send any other information like spam etc.

EDIT This is the content I have inside appsscript.json:

{
  "timeZone": "America/New_York",
  "dependencies": {
  },
  "exceptionLogging": "STACKDRIVER",
  "runtimeVersion": "V8"
}

Solution

  • here's what one of my oauthscopes looks like:

    "oauthScopes": [
        "https://mail.google.com/",
        "https://www.google.com/m8/feeds",
        "https://www.googleapis.com/auth/userinfo.email",
        "https://www.googleapis.com/auth/script.external_request",
        "https://www.googleapis.com/auth/spreadsheets",
        "https://www.googleapis.com/auth/script.container.ui",
        "https://www.googleapis.com/auth/calendar",
        "https://www.googleapis.com/auth/gmail.send",
        "https://www.googleapis.com/auth/script.send_mail",
        "https://www.googleapis.com/auth/drive",
        "https://www.googleapis.com/auth/presentations",
        "https://www.googleapis.com/auth/cloud-platform",
        "https://www.googleapis.com/auth/documents",
        "https://www.googleapis.com/auth/script.projects.readonly",
        "https://sites.google.com/feeds",
        "https://www.googleapis.com/auth/drive.activity",
        "https://www.googleapis.com/auth/forms",
        "https://www.googleapis.com/auth/script.projects"
      ],