added welcome-email-smtp nodejs

nodejs/welcome-email-smtp/README.md

@@ -0,0 +1,46 @@
+# 📧 Sending Welcome Emails using your own SMTP server
+A sample Node.js Cloud Function for sending a welcome email to a newly registered user.
+
+## 📝 Environment Variables
+Go to Settings tab of your Cloud Function. Add the following environment variables.
+
+* **SMTP_HOST** - Your SMTP host
+* **SMTP_PORT** - Your SMTP host port
+* **SMTP_USER** - Your SMTP username
+* **SMTP_PASSWORD** - Your SMTP password
+* **SMTP_FROM** - From who the email should come from
+
+## 🚀 Building and Packaging
+
+To package this example as a cloud function, follow these steps.
+
+```bash
+$ cd demos-for-functions/nodejs/welcome-email-smtp
+
+$ npm install
+```
+
+* Ensure that your folder structure looks like this 
+```
+.
+├── index.js
+├── node_modules/
+├── package-lock.json
+└── package.json
+```
+
+* Create a tarfile
+
+```bash
+$ cd ..
+$ tar -zcvf code.tar.gz welcome-email-smtp
+```
+
+* Navigate to the Overview Tab of your Cloud Function > Deploy Tag
+* Input the command that will run your function (in this case "node index.js") as your entrypoint command
+* Upload your tarfile 
+* Click 'Activate'
+
+## 🎯 Trigger
+
+Head over to your function in the Appwrite console and under the Settings Tab, enable the `users.create` and `account.create` event.

nodejs/welcome-email-smtp/index.js

@@ -0,0 +1,54 @@
+// Perform all your imports
+
+const nodemailer = require('nodemailer');
+let SMTPsecure;
+
+//Get your env variables
+const SMTPconfig = {
+	host: process.env.SMTP_HOST,
+    port: process.env.SMTP_PORT,
+	user: process.env.SMTP_USER,
+    password: process.env.SMTP_PASSWORD,
+    from: process.env.SMTP_FROM,
+};
+
+// Get the name and email of the newly created user from Appwrite's environment variable
+const payload = JSON.parse(process.env.APPWRITE_FUNCTION_EVENT_DATA);
+const name = payload['name'];
+const email = payload['email'];
+
+
+//Checks if you use SMTP secure
+if( SMTPconfig.port == 465){
+    SMTPsecure = true;
+}else{
+    SMTPsecure = false;
+}
+
+//Initialize nodemailer
+var transporter = nodemailer.createTransport({
+host: SMTPconfig.host,
+    port: SMTPconfig.port,
+    secure: SMTPsecure, 
+    auth: {
+      user: SMTPconfig.user,
+      pass: SMTPconfig.password,
+    },})
+
+//Create your email
+var mailOptions = {
+  from: SMTPconfig.from,
+  to: email,
+  subject: `Welcome on board ${name}!`,
+  text: `Hi ${name}\nGreat to have you with us. ! 😍`
+};
+
+
+//send email
+transporter.sendMail(mailOptions, function(error, info){
+  if (error) {
+    console.log(error);
+  } else {
+    console.log('Email sent: ' + info.response);
+  }
+}); 

nodejs/welcome-email-smtp/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "cloud-functions-demo-nodejs",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "nodemailer": "^6.6.3"
+  }
+}