add sending emails

Author: DavidWells

_instructor/use-cases/7-sending-emails/README.md

@@ -0,0 +1,93 @@
+# Using functions for Sending Email
+
+This lesson will walk through creating a function to process payments via [Stripe](https://www.stripe.com/).
+
+<!-- AUTO-GENERATED-CONTENT:START (TOC) -->
+- [Lesson Steps](#lesson-steps)
+- [Complete code](#complete-code)
+<!-- AUTO-GENERATED-CONTENT:END -->
+
+## Lesson Steps
+
+<!-- AUTO-GENERATED-CONTENT:START (GENERATE_LESSONS_STEPS)-->
+1. Create a `netlify.toml` file in your project.
+
+    The `netlify.toml` file is where we configure how the site builds and where your serverless functions live.
+
+2. In `netlify.toml`, add a `[build]` section and add `publish` and `functions` values
+
+3. We need to create this site in Netlify
+
+    Open your terminal and run the following command:
+
+    ```bash
+    netlify init
+    ```
+
+    Choose manual deployments
+
+5. After configuring your redirect, its time to deploy
+
+    Open your terminal and run the following command:
+
+    ```bash
+    netlify deploy -p
+    ```
+
+6. Invoke the function to ensure it's working properly
+
+    Visit your site and the URL https://your-site-url.netlify.com/.netlify/functions/redirect
+
+    It should redirect you to a new location.
+<!-- AUTO-GENERATED-CONTENT:END -->
+
+<!-- SCROLL UP FOR STEPS -->
+
+<!-- Step 1. Create a `netlify.toml` file in your project.
+
+    The `netlify.toml` file is where we configure how the site builds and where your serverless functions live.
+
+-->
+
+<!-- Step 3. We need to create this site in Netlify
+
+    Open your terminal and run the following command:
+
+    ```bash
+    netlify init
+    ```
+
+    Choose manual deployments
+-->
+
+<!-- Step 5. After configuring your redirect, its time to deploy
+
+    Open your terminal and run the following command:
+
+    ```bash
+    netlify deploy -p
+    ```
+-->
+
+<!-- Step 6. Invoke the function to ensure it's working properly
+
+    Visit your site and the URL https://your-site-url.netlify.com/.netlify/functions/redirect
+
+    It should redirect you to a new location.
+
+-->
+
+
+<!-- AUTO-GENERATED-CONTENT:START (README_BOTTOM) -->
+## Complete code
+
+If you need help or get stuck refer to the completed code of this lesson
+
+[View Complete Code](https://github.com/DavidWells/netlify-functions-workshop/tree/master/lessons-code-complete/use-cases/6-scraping)
+<!-- AUTO-GENERATED-CONTENT:END -->
+
+
+## Additional Resources
+
+- [Serverless User Engagement with AWS Lambda, SendGrid, BadgeUp and Node.js](https://codeburst.io/serverless-user-engagement-with-aws-lambda-sendgrid-badgeup-and-node-js-53cdc4fa1ddd)
+- [Sendgrid Send HTML Email](https://github.com/BadgeUp/badgeup-serverless-email-demo/blob/a686df908d77713271142dbae285f322db670969/index.js)

_instructor/use-cases/7-sending-emails/functions/mailgun/mailgun.js

@@ -0,0 +1,34 @@
+const mailgunSdk = require('mailgun-js')
+const apiKey = process.env.MAILGUN_API_KEY
+const domain = `mail.${process.env.DOMAIN}`
+const mailgun = mailgunSdk({ apiKey, domain })
+
+exports.handler = async (event, context, callback) => {
+  const data = JSON.parse(event.body)
+
+  let response
+  try {
+    /* Send email to recicipent */
+    response = await mailgun.messages().send({
+      to: data.to,
+      from: data.from,
+      subject: data.subject,
+      text: data.text,
+    })
+  } catch (e) {
+    console.log('Err', e)
+    return {
+      statusCode: e.statusCode || 500,
+      body: JSON.stringify({
+        error: e.message
+      })
+    }
+  }
+
+  return {
+    statusCode: 200,
+    body: JSON.stringify({
+      result: response.message
+    })
+  }
+}

_instructor/use-cases/7-sending-emails/functions/mailgun/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "send-email-via-mailgun",
+  "version": "1.0.0",
+  "description": "",
+  "author": "David Wells",
+  "license": "MIT",
+  "dependencies": {
+    "mailgun": "^0.5.0"
+  }
+}