slack.yml

name: Publish merged PRs on Slack
on:
  pull_request_target:
    types: [closed]
    branches: [main]

jobs:
  slack_publish:
    runs-on: ubuntu-22.04
    if: github.event.pull_request.merged
    steps:
      - name: publish_message
        env:
          PR_TITLE: ${{ github.event.pull_request.title }}
          PR_BODY: ${{ github.event.pull_request.body }}
          PR_URL: ${{ github.event.pull_request.html_url }}
          AUTHOR: ${{ github.event.pull_request.user.login }}
        run: |
          curl ${{ secrets.SLACK_PR_MERGED_WEBHOOK_URL }} \
          -H "Content-Type: application/json" \
          -d "$(jq -n --arg title "${PR_TITLE}" \
                      --arg body "${PR_BODY}" \
                      --arg author "${AUTHOR}" \
                      --arg url "${PR_URL}" \
                      '$ARGS.named')"