DeepL App for Slack

Features

Shortcut to run DeepL Translate API

Slack users can run DeepL Translate API in a modal.

Post a translated text in thread

This works mostly the same as reacjilator.

Prerequisites

To run this app, the following accounts are required.

• DeepL Pro (for Developers) account
• Slack workspace and user account
• Heroku account

If you already have all of them, setting up this app requires only 5 minutes.

Set up

Create your DeepL Pro (for Developers) account

• Select "for Developers" plan at https://www.deepl.com/pro/ (be careful not to choose any other)
• Go to your DeepL Pro Account page
• Save the Authentication Key for DeepL API value

Refer to the following resources for more details:

• https://www.deepl.com/en/pro/
• https://www.deepl.com/docs-api/

Create your Slack App (Step 1)

• Create a new Slack app here

  • App Name: "DeepL Translation"
  • Development Slack Workspace: Choose the workspace you use this app

• Go to Features > OAuth & Permissions in the left pane

  • Scroll down to Scopes > Bot Token Scopes section
  • Click Add an OAuth Scope button
  • Add channels:history, chat:write, groups:history, reactions:read

• Got to Settings > Install App in the left pane

  • Click Install App to Workspace button
  • Click Allow button in the OAuth confirmation page
  • Save the Bot User OAuth Access Token value (xoxb-***)

• Go to Settings > Basic Information in the left pane

  • Scroll down to App Credentials section
  • Click Show button in Signing Secret section
  • Save the Signing Secret value

Deploy to Heroku

• Confirm your billing settings
• Deploy this app with the following env variables
  • SLACK_SIGNING_SECRET: Settings > Basic Information > App Credentials > Signing Secret in the Slack app config page
  • SLACK_BOT_TOKEN: Settings > Install App > Bot User OAuth Access Token in the Slack app config page
  • DEEPL_AUTH_KEY: Authentication Key for DeepL API in the DeepL Pro account page
• You may need to change the "Dyno Type" to enable the app

Slack App (Step 2)

• Go to Features > Event Subscriptions in the left pane

  • Turn on Enable Events
  • Set the Request URL to https://{your app's Heroku domain}/slack/events
  • Click Subscribe to bot events
  • Click Add Bot User Event button
  • Add reaction_added event
  • Click Save Changes button at the bottom for sure

• Go to Features > Interactivity & Shortcuts in the left pane

  • Turn on Interactivity
  • Set the Request URL to https://{your app's Heroku domain}/slack/events
  • Scroll down to Shortcuts section
  • Click Create New Shortcut button
  • Choose Global and clikc Next button
  • Name: "DeepL Translation"
  • Short Description: "Run DeepL Translate API"
  • Callback ID: "deepl-translation"
  • Click Save Changes button at the bottom for sure

• Got to Settings > Install App in the left pane

  • Click Install App to Workspace button
  • Click Allow button in the OAuth confirmation page

Verify it works in Slack

• Go to your Slack workspace

• Run /invite @deepl_translation in a channel

• Post a message saying In functional programming, a monad is a design pattern that allows structuring programs generically while automating away boilerplate code needed by the program logic. Monads achieve this by providing their own data type (a particular type for each type of monad), which represents a specific form of computation, along with one procedure to wrap values of any basic type within the monad (yielding a monadic value) and another to compose functions that output monadic values (called monadic functions).

• Add a reaction :flag-jp: to the message

• Check a new message in its thread

• Click ⚡ (Shortcuts) button

• Click DeepL Translation

• Enter a text and the language on the modal

License

The MIT License