add nodemailer and html-to-text

src/server/backend/mail/mailSender.js

@@ -0,0 +1,63 @@
+/* 
+*
+*   LANGUAGE SCHOOL HOSSEGOR - Booking system
+*               mailManager.js
+*
+*       Developed 2022 by Janis Hutz
+*
+*/
+// import and init of nodemailer middleware
+const mailer = require( 'nodemailer' );
+const html2text = require( 'html-to-text' );
+
+// import jsondb.js file and let it import mail config
+
+var transporter = mailer.createTransport(  );
+
+class MailManager {
+    constructor () {
+        this.options = {
+            wordwrap: 130
+        };
+    }
+
+    /* 
+      This method sends a mail with recipient, html, subject and sender as arguments
+    */
+    sendMail ( recipient, html, subject, sender ) {
+        let text = html2text.convert( html, this.options );
+        var mailOptions = {
+            from: sender,
+            to: recipient,
+            subject: subject,
+            html: html,
+            text: text,
+        };
+
+        transporter.sendMail( mailOptions, function ( error ) {
+            if ( error ) {
+                console.log( error );
+            }
+        } );
+    }
+
+    sendMailWithAttachment ( recipient, html, subject, attachments, from ) {
+        let text = html2text.convert( html, this.options );
+        var mailOptions = {
+            from: from,
+            to: recipient,
+            subject: subject,
+            html: html,
+            text: text,
+            attachments: attachments
+        };
+
+        transporter.sendMail( mailOptions, function ( error ) {
+            if ( error ) {
+                console.log( error );
+            }
+        } );
+    }
+}
+
+module.exports = MailManager;