slack-discord-bridge

Light weight text channel bridge between Slack & Discord.
Utilises Slack Events API & Web API, no more creating "old" slack apps & using deprecated RTM libraries.
Credit to @HackSoc for original inspiration.

Installation

Before installation please ensure you have Node.js and NPM installed on your machine.

Step 1: Clone repository & install dependency packages.

git clone https://github.com/NickMandylas/slack-discord-bridge
cd slack-discord-bridge
npm install

Step 2: Setup Slack App / API Keys.

1. Head to Slack API and create an app.

2. Go to Basic Information (if not already there) and save the signing secret to slack.keys.js.

3. Go to OAuth & Permissions and scroll down to scopes & add the following:

   1. Bot Token Scopes: chat:write, chat:write.customize & users:read.
   2. User Token Scopes: channels:history

4. Still on the OAuth & Permissions page, scroll to the top and click Install App to Workspace. Proceed through the installation prompts. This will provide you your OAuth Access Token & Bot User OAuth Access Token. Add these tokens to your slack.keys.js file.

5. Go to Events Subscriptions & complete the following:

   1. Turn On Enable Events.

   2. Click Subscribe to events on behalf of users & add message.channels to the permission scope.

   3. We now need to verify our request URL. Run this command in the slack-discord-bridge folder:
      ./node_modules/.bin/slack-verify --secret <signing_secret> --port=80.
      Replace <signing_secret> with your signing secret that was retrieved from step 2.
      Then enter in http:///slack/events to the Request URL.
      Once verified you can stop the script.

Step 3: Setup Discord Bot / API Keys.

1. Head over to Discord Developers Page & create a new application.

2. On the side panel, click Bot. Add a new bot & copy the Token to Discord.keys.js.

3. On the side panel, click OAuth2. We'll create a link to invite our bot to our server.

   1. Tick the bot checkbox under scopes.
   2. Tick the Read Message History permission.
   3. Copy the URL above, and paste it into your browser. This will open a prompt to add the bot to your server.

4. Now we'll create a web hook for the discord channel receiving the slack message.

   1. Click Edit Channel (the gear icon next to the channel name).
   2. On the side panel, click Webhooks add create a Webhook.
   3. Copy the Webhook URL, and paste the Webhook ID & token into the relevant fields in the Discord.keys.js file.

Step 4: Set the channels that'll be the bridge in both the Discord.keys.js & Slack.keys.js file.

Usage

npm start

If you need to run the application in the background, please install pm2 & run.

pm2 start index.js

Other Information

Bugs / Todos

• Currently if you @ a user on either Discord or Slack, it returns the user ID, not the string.
• File sharing

Using on your local machine?

Don't have access to a public IP address? Or is port 80 blocked? Use & install ngrok.

• Run ngrok http 3000.
• You'll need to change the port to 3000 in index.js.
• As well run this command ./node_modules/.bin/slack-verify --secret <signing_secret> --port=3000 using port 3000.

Slack delve more into using ngrok in their events-api documentation.

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

License

MIT