feat(mailer): add gmail nodemailer transport; change SES handling

Amazon SES creds have to be provided in configuration object, not in a JSON file

README.md

@@ -9,7 +9,7 @@ Basically a very limited version of what [keygen.sh](https://keygen.sh/) does.
 
 ## Quick start
 
-1. configure [Amazon SES](https://aws.amazon.com/ses/) and create `aws-config.json` file.
+1. configure [Amazon SES](https://aws.amazon.com/ses/) or get some gmail creds
 
 1. install
 
@@ -25,9 +25,25 @@ Basically a very limited version of what [keygen.sh](https://keygen.sh/) does.
   authkey({
     from: 'superthing@things.com'
     productName: 'SuperThing',
+    mailerConfig: {
+      // see below for other services
+      type: 'gmail',
+      credentials: {
+        user: process.env.GMAIL_USER,
+        pass: process.env.GMAIL_PASS,
+      }
+    },
   }).listen()
   ```
 
+### `mailerConfig` options
+
+| service (`type`) | required `credentials` |
+| :------------- | :------------- |
+| `amazonSES` | `accessKeyId`, `secretAccessKey`, `region` |
+| `gmail` | `user`, `pass` |
+
+
 ## API Reference
 
 | verb | endpoint       | what it does     |

__tests__/mailer.js

@@ -1,4 +1,4 @@
-const {getMailOptions} = require('../src/mailer')
+const {getMailOptions, mailer} = require('../src/mailer')
 
 describe('getMailOptions', () => {
   const createMailOptions = (config) => getMailOptions({
@@ -24,3 +24,11 @@ describe('getMailOptions', () => {
     })).toMatchSnapshot()
   })
 })
+
+describe('mailer', () => {
+  it('throws if no mailerConfig is provided', () => {
+    expect(() => {
+      mailer({})
+    }).toThrow(/mailerConfig must be/)
+  })
+})

__tests__/server.js

@@ -6,6 +6,7 @@ const instance = authkey({
   from: 'someone@mail.com',
   productName: process.env.PRODUCT_NAME,
   dbFile: '__tests__/db.json',
+  mailerConfig: {},
 })
 
 beforeEach(() => {

src/mailer/index.js

@@ -1,5 +1,4 @@
 const nodemailer = require('nodemailer')
-const aws = require('aws-sdk')
 
 const isTest = process.env.NODE_ENV === 'test'
 
@@ -32,24 +31,31 @@ const sendMail = ({nodemailerTransport, config}) => ({to, authkey}) => new Promi
   )
 })
 
-const getSESTransprter = () => {
-  if (isTest) {
-  } else {
-    // configure AWS SDK
-    aws.config.loadFromPath('aws-config.json')
+const getNodemailerTransport = ({type, credentials}) => {
+  if (!isTest) {
+    const transport = {}
 
-    // create Nodemailer SES transporter
-    return nodemailer.createTransport({
-      SES: new aws.SES(),
-    })
+    if (type === 'amazonSES') {
+      const aws = require('aws-sdk')
+      aws.config.update(credentials)
+      transport.SES = new aws.SES()
+    } else if (type === 'gmail') {
+      transport.service = 'gmail'
+      transport.auth = credentials
+    }
+
+    return nodemailer.createTransport(transport)
   }
 }
 
 module.exports = {
-  mailer: (config) => {
+  mailer: ({mailerConfig, ...config}) => {
+    if (!mailerConfig) {
+      throw new Error(`mailerConfig must be provided in config object`)
+    }
     return ({
       send: sendMail({
-        nodemailerTransport: getSESTransprter(),
+        nodemailerTransport: getNodemailerTransport(mailerConfig),
         config,
       }),
     })