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Slack Invite Automation

A tiny web application to invite a user into your Slack team.

Inspired by How I hacked Slack into a community platform with Typeform and Socket.io's Slack page.

This project supports Heroku, Azure and Cloud Foundry.

Deploy to Heroku Deploy to Azure

Settings

You can set variables for your own purpose in config.js or environment variables.

config.js

Fill out config.js as your infomation.

  • community: your community or team name to display on join page.
  • slackUrl : your slack team url (ex.: socketio.slack.com)
  • slacktoken : Your access token for Slack. (see Issue token)
  • inviteToken: An optional security measure - if it is set, then that token will be required to get invited.
  • recaptchaSiteKey: An optional security measure - if it is set, and recaptchaSecretKey is set, then a captcha will be required to get invited.
  • recaptchaSecretKey: An optional security measure - if it is set, and recaptchaSiteKey is set, then a captcha will be required to get invited.
  • locale: Application language (currently cs, de, en, es, fr, it, ja, ko, nl, pl, pt, pt-BR, tr, zh-CN and zh-TW available).
  • subpath: Sub-path in URL. For example, if /example is set, it's served in /example, not /. Default is /.

Environment Variables

You can set environment variables directly or in .env file. If you want to use a .env file, create a file in the root called .env with the following key/value pairs. (.env files are added to the .gitignore.)

  • COMMUNITY_NAME : Your community or team name to display on join page.
  • SLACK_URL : Your Slack team url (ex.: socketio.slack.com)
  • SLACK_TOKEN : Your access token for Slack. (see Issue token)
  • INVITE_TOKEN: An optional security measure - if it is set, then that token will be required to get invited.
  • RECAPTCHA_SITE: An optional security measure - used to enable reCAPTCHA.
  • RECAPTCHA_SECRET: An optional security measure - used to enable reCAPTCHA.
  • LOCALE: Application language (currently cs, de, en, es, fr, it, ja, ko, nl, pl, pt, pt-BR, tr, zh-CN and zh-TW available).
  • SUBPATH: Sub-path in URL. For example, if /example is set, it's served in /example, not /. Default is /.

Sample

COMMUNITY_NAME=socketio
SLACK_URL=socketio.slack.com
SLACK_TOKEN=ffsdf-5411524512154-16875416847864648976-45641654654654654-444334f43b34566f
INVITE_TOKEN=abcdefg
LOCALE=en

You can test your token via curl:

   curl -X POST 'https://YOUR-SLACK-TEAM.slack.com/api/users.admin.invite' \
   --data 'email=EMAIL&token=TOKEN&set_active=true' \
   --compressed

Heroku / Azure

Add the application settings that are defined in the environment variables above.

Run

Node.js is required.

$ git clone https://github.com/outsideris/slack-invite-automation.git
$ cd slack-invite-automation
$ npm install
$ npm start

You can access http://localhost:3000 on your web browser.

Run with Docker

It's easy to run this service if you have installed Docker on your system. Pull the Docker image from Docker Hub.

$ docker pull outsideris/slack-invite-automation
$ docker run -it --rm -e COMMUNITY_NAME="YOUR-TEAM-NAME" -e SLACK_URL="YOUR-TEAM.slack.com" -e SLACK_TOKEN="YOUR-ACCESS-TOKEN" -p 3000:3000 outsideris/slack-invite-automation

Or, You can build a Docker image yourself.

$ git clone https://github.com/outsideris/slack-invite-automation.git
$ cd slack-invite-automation
$ docker build -t outsideris/slack-invite-automation .
$ docker run -it --rm -e COMMUNITY_NAME="YOUR-TEAM-NAME" -e SLACK_URL="YOUR-TEAM.slack.com" -e SLACK_TOKEN="YOUR-ACCESS-TOKEN" -p 3000:3000 outsideris/slack-invite-automation

Issue token

You should generate the token in admin user, not owner. If you generate the token in owner user, a missing_scope error may occur.

There are two ways to issue the access token.

Legacy tokens

  1. Visit https://api.slack.com/custom-integrations/legacy-tokens.

  2. Click Create token.

OAuth tokens

  1. Visit https://api.slack.com/apps and Create New App.

  2. Click "Permissions".

  3. In "OAuth & Permissions" page, select admin scope under "Permission Scopes" menu and save changes.

  4. Click "Install App to Team".

  5. Visit https://slack.com/oauth/authorize?&client_id=CLIENT_ID&team=TEAM_ID&install_redirect=install-on-team&scope=admin+client in your browser and authorize it.

    • It authorizes the client permission. Otherwise, you can see {"ok":false,"error":"missing_scope","needed":"client","provided":"admin"} error.
    • Your CLIENT_ID could be found in "Basic Information" menu of your app page that you just install.
    • Your TEAM_ID could be found in https://api.slack.com/methods/team.info/test

Badge

You can use the badge to show status of user in your slack.

  • With default colors:

    <img src="https://your.domain/badge.svg">

  • With custom colors:

    • ?colorA=abcdef Set background of the left part (hex color only)

    • ?colorB=fedcba Set background of the right part (hex color only)

      <img src="https://your.domain/badge.svg?colorA=155799&colorB=159957">

reCAPTCHA

Register a new site in Google reCAPTHCA as reCAPTCHA v2 type.

Set "Site key" as recaptchaSiteKey or RECAPTCHA_SITE, and "Secret key" as recaptchaSecretKey or RECAPTCHA_SECRET.