Ways to extract email content from various XML documents

In my MEAN stack application, I have successfully implemented nodemailer for sending emails.

Now, I am working on a feature where the email content is dynamic based on different situations. To achieve this, I am storing the mail content in an XML file and retrieving it based on keywords specified in the HTML tags of nodemailer.

For example, when a user registers, a registration email will be sent by fetching the content associated with the 'registration' keyword in the XML file.

Here is a snippet of the XML file structure:

<?xml version="1.0" standalone="yes"?>
<MailContent>
  <registration>
    <AfterSignUp>
     <html><body><p>
      Hello #FirstName #LastName
     </p>
      <p>
      <br/>
      You recently registered for #ProjectName.To complete your registration, please <a href="#URL">Click Here </a> to confirm 'your' account.
      </p> 
     <br/>
      <p>
      Warm Regards,
      </p>
      <br/>
      <p>
      System Administrator
      </p>
      <br/>
      <p>
      #ProjectName.
      </p></body></html></AfterSignUp>
    <SignUpSubject>Registration confirmation for #ProjectName</SignUpSubject>
  </registration>

  <ForgotPassword>
    <ForgetContent><html><body><p>
      Hello #FirstName #LastName
      </p>
      <p>
      You have requested to have your password reset for your account at #ProjectName.
      </p>
      <p>
      Click the below link to reset your account password
      </p>
      <p>
      <a href="#URL">Reset Password </a>
      </p>
      <br/>
       <p>
      Warm Regards,
      </p>
      <br/>
      <p>
      System Administrator
      </p>
      <br/>
      <p>
       #ProjectName.
      </p></body></html></ForgetContent>
    <ForgetSubject>#ProjectName password recovery.</ForgetSubject>
  </ForgotPassword>

</MailContent>

Nodemailer's mail options are defined as follows:

let mailOptions = {
    from: 'mailid', // sender address
    to: 'mailid', // list of receivers
    subject:, // Subject line

    html: '' // html body
};

My challenge now is how to fetch the content from the XML file and incorporate it into the nodemailer options dynamically.

Answer №1

By utilizing handlebars and fs, I successfully resolved the issue of rendering the html page, with guidance from Nodemailer.

To achieve this, I created registrationcontent.html and incorporated it into node mailer as shown below:

 var readHTMLFile = function (path, callback) {
                    fs.readFile(path, { encoding: 'utf-8' }, function (err, html) {
                        if (err) {
                            throw err;
                            callback(err);
                        }
                        else {
                            callback(null, html);
                        }
                    });
                };

                console.log("Sending", user, done);
                var smtpConfig = {
                    host: mailconfig.host,
                    port: mailconfig.port,
                    auth: {
                        user: mailconfig.USER,
                        pass: mailconfig.PASSWORD
                    }

                };
                console.log(smtpConfig);
    var transporter = nodemailer.createTransport(smtpConfig);

 readHTMLFile(__dirname + '/../MailContents/mail.html', function (err, html) {
                    var template = handlebars.compile(html);
                    var replacements = {
                        FirstName: user.FirstName,
                        LastName: user.LastName,
        URL :`http://sample.com`
                        };
                    var htmlToSend = template(replacements);
                    var mailOptions = {
                        to: user.Email,
                        from: 'mail',
                        subject: 'Registration confirmation',
                        html: htmlToSend
                    };
transporter.sendMail(mailOptions, (err) => {
 console.log("An e-mail has been sent to with further instructions.");
 res.json("Thank you for registering. An Email has been sent to you. Go to registered email inbox to complete the registration process.");
                        done(err);
                    });
                });

To streamline the process, I initially utilized separate html files for each email, but now seek a single file (e.g., xml or html) containing all email bodies accessible via keywords.

Your input on a comprehensive solution is highly valued.

Many thanks

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