Slack App template using Bolt

Note: May use Firebase Blaze Plan

Create a new firebase project in https://console.firebase.google.com/u/1/ and install firebase-tools.

$ npm install -g firebase-tools
$ firebase login
$ firebase use [project_id]

1. Press Create New App in https://api.slack.com/apps
2. Press Add a Bot User in Bot Users
3. Press Create New Command in Slash Commands:

• Command: /hello
• Request URL: https://asia-northeast1-[project_id].cloudfunctions.net/slack
• Short Description: Hello world

4. Press Install App to Workspace in Install App

# Signing Secret in Basic Information
$ firebase functions:config:set slack.signing_secret=xxx
# Bot User OAuth Access Token in Install App
$ firebase functions:config:set slack.bot_token=yyy

Open Settings > Secrets in a GitHub repository and set secrets as follows:

• FIREBASE_TOKEN: Firebase token with firebase login:ci
• FIREBASE_PROJECT_ID: Firebase project ID
• SLACK_WEBHOOK_URL: Incoming Webhook URL

$ cd functions
$ npm install
$ cd -

$ firebase deploy --only functions

• slackapi/bolt
• w9jds/firebase-action
• 8398a7/action-slack