Add a token that's required to be invited.

Meant to be distributed in real life, or via email, or whatever other form you want. For those times when you don't want to invite everyone, and don't have a list of email addresses.

app.json

@@ -15,6 +15,10 @@
     "SLACK_TOKEN": {
       "description": "access token of slack, You can generate it in https://api.slack.com/web#auth",
       "value": ""
+    },
+    "INVITE_TOKEN": {
+      "description": "Shared secret token used to get access. Leave blank if you don't want users to have to provide a token.",
+      "value": ""
     }
   }
 }

config.js

@@ -12,5 +12,7 @@ module.exports = {
   //   curl -X POST 'https://YOUR-SLACK-TEAM.slack.com/api/users.admin.invite' \
   //   --data 'email=EMAIL&token=TOKEN&set_active=true' \
   //   --compressed
-  slacktoken: process.env.SLACK_TOKEN || 'YOUR-ACCESS-TOKEN'
+  slacktoken: process.env.SLACK_TOKEN || 'YOUR-ACCESS-TOKEN',
+
+  inviteToken: process.env.INVITE_TOKEN || ''
 };

public/css/style.css

@@ -100,7 +100,8 @@ font-family: 'Lato', sans-serif;
 font-size: 16px;
 color: #ffffff;
 float: left;
-padding: 15px ;
+padding: 15px;
+margin-bottom: 15px;
 }
 
 @media only screen and (max-device-width: 420px)  {

routes/index.js

@@ -4,11 +4,12 @@ var request = require('request');
 var config = require('../config');
 
 router.get('/', function(req, res) {
-  res.render('index', { community: config.community });
+  res.render('index', { community: config.community,
+                        tokenRequired: config.inviteToken !== "" });
 });
 
 router.post('/invite', function(req, res) {
-  if (req.body.email) {
+  if (req.body.email && req.body.token && config.inviteToken !== "" && req.body.token === config.inviteToken) {
     request.post({
         url: 'https://'+ config.slackUrl + '/api/users.admin.invite',
         form: {
@@ -43,7 +44,25 @@ router.post('/invite', function(req, res) {
         }
       });
   } else {
-    res.status(400).send('email is required.');
+    var errMsg = [];
+    if (!req.body.email) {
+      errMsg.push('email is required.');
+    }
+
+    if (config.inviteToken !== "") {
+      if (!req.body.token) {
+        errMsg.push('token is required.');
+      }
+
+      if (req.body.token && req.body.token !== config.inviteToken) {
+        errMsg.push('token is wrong.');
+      }
+    }
+
+    res.render('result', {
+      community: config.community,
+      message: errMsg.join(" and ")
+    });
   }
 });
 

views/index.jade

@@ -17,12 +17,15 @@ html
           .information
             form(method="POST", action="/invite")#join-form.form
               input(type="text", name="email", placeholder="Enter Your Email Address")#slack-email.field
+              if tokenRequired
+                input(type="text", name="token", placeholder="Enter the token you were given")#slack-token.field
               input(type="submit", value="Join").submit
     script.
       var form = document.getElementById('join-form');
-      var email = document.getElementById('slack-email')
+      var email = document.getElementById('slack-email');
+      var token = document.getElementById('slack-token');
       form.addEventListener('submit', function(evt) {
-        if (!email.value) {
+        if (!email.value || (tokenRequired && !token.value)) {
           evt.preventDefault();
         }
       });