From 5593652da833a75b5d221c4b4d14c39de8c42b0d Mon Sep 17 00:00:00 2001
From: Stefan-5422 <32109571+Stefan-5422@users.noreply.github.com>
Date: Sat, 2 Apr 2022 17:44:30 +0200
Subject: [PATCH] Add library for template compilation; Add function to send
 out predefined verification mail

---
 src/lib/mail.ts | 92 +++++++++++++++++++++++++++++++------------------
 src/lib/mjml.ts | 33 ++++++++++++++++++
 2 files changed, 91 insertions(+), 34 deletions(-)
 create mode 100644 src/lib/mjml.ts

diff --git a/src/lib/mail.ts b/src/lib/mail.ts
index c8c7e0e..0a3d5c1 100644
--- a/src/lib/mail.ts
+++ b/src/lib/mail.ts
@@ -1,43 +1,55 @@
+import Handlebars, { template } from "handlebars";
 import nodemailer from "nodemailer";
 import SMTPTransport from "nodemailer/lib/smtp-transport";
 
-let mailAccount = { user: process.env.MAILUSER + "@mail." + process.env.DOMAIN, pass: process.env.MAILPASSWORD };
+import mjml from "./mjml";
 
-let transporter = nodemailer.createTransport(
-  new SMTPTransport({
-    host: "localhost",
-    port: 587,
-    secure: false,
-    auth: {
-      user: mailAccount.user,
-      pass: mailAccount.pass,
-    },
-    tls: {
-      rejectUnauthorized: false,
-      secureProtocol: "TLSv1_method",
-    },
-  })
-);
+export let mailAccount = {
+  user: process.env.MAILUSER + "@mail." + process.env.DOMAIN,
+  pass: process.env.MAILPASSWORD || "password",
+};
 
-if (process.env.DEV == "true") {
-  console.log("test");
-  (async () => {
-    mailAccount = await nodemailer.createTestAccount();
-    console.log(mailAccount);
-    transporter = nodemailer.createTransport({
-      host: "smtp.ethereal.email",
-      port: 587,
-      secure: false, // true for 465, false for other ports
-      auth: {
-        user: mailAccount.user, // generated ethereal user
-        pass: mailAccount.pass, // generated ethereal password
-      },
-    });
-  })();
-}
+let transporter =
+  process.env.DEV == "true" || process.env.DOMAIN == undefined
+    ? (async () => {
+        mailAccount = await nodemailer.createTestAccount();
+        //mailAccount = {
+        //  user: "",
+        //  pass: "",
+        //};
+        if (process.env.NODE_ENV != "test") {
+          console.log(mailAccount);
+        }
+        return nodemailer.createTransport({
+          host: "smtp.ethereal.email",
+          port: 587,
+          secure: false, // true for 465, false for other ports
+          auth: {
+            user: mailAccount.user, // generated ethereal user
+            pass: mailAccount.pass, // generated ethereal password
+          },
+        });
+      })()
+    : nodemailer.createTransport(
+        new SMTPTransport({
+          host: "localhost",
+          port: 587,
+          secure: false,
+          auth: {
+            user: mailAccount.user,
+            pass: mailAccount.pass,
+          },
+          tls: {
+            rejectUnauthorized: false,
+            secureProtocol: "TLSv1_method",
+          },
+        })
+      );
 
 const sendMail = async (from: string, to: string, subject: string, text?: string, html?: string) => {
-  return await transporter.sendMail({
+  return await (
+    await transporter
+  ).sendMail({
     from: from,
     to: to,
     subject: subject,
@@ -46,4 +58,16 @@ const sendMail = async (from: string, to: string, subject: string, text?: string
   });
 };
 
-export default { sendMail, mailAccount };
+export const verificationMail = async (to: string, id: string) => {
+  const raw = mjml.getTemplate("verify");
+
+  //TODO: Replace other handlebars with final values
+  const message = Handlebars.compile(raw);
+
+  const data = {};
+  const compiled = message(data);
+
+  sendMail(mailAccount.user, to, "Verify Email", undefined, compiled);
+};
+
+export default { sendMail };
diff --git a/src/lib/mjml.ts b/src/lib/mjml.ts
new file mode 100644
index 0000000..29367d4
--- /dev/null
+++ b/src/lib/mjml.ts
@@ -0,0 +1,33 @@
+import fs from "fs";
+import path from "path";
+import mjml from "mjml";
+
+const template_folder = __dirname + "/../../resources/email/templates/";
+
+const compileTemplates = () => {
+  console.log("Compiling templates: ");
+
+  fs.readdir(template_folder, (err, files) => {
+    if (err) console.log(err);
+
+    files.forEach((file) => {
+      if (path.extname(file) !== ".mjml") return;
+
+      let content = fs.readFileSync(template_folder + file);
+      let mjmlres = mjml(content.toString());
+
+      let hbs = template_folder + file.replace(".mjml", ".hbs");
+      fs.writeFileSync(hbs, mjmlres.html);
+    });
+  });
+};
+
+compileTemplates(); // This will compile all templates when this file is first included
+
+const getTemplate = (name: string): string => {
+  let file = "";
+  file = fs.readFileSync(path.join(template_folder, name + ".hbs")).toString();
+  return file;
+};
+
+export default { getTemplate };