pr-notifications.yml

name: Pull Request Notifications

on:
  pull_request:
    branches:
      - production
    types: [ready_for_review]

jobs:
  notify_slack:
    runs-on: ubuntu-latest
    env:
      SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
      SLACK_CHANNEL: "acf-ohs-ttahub--contractor-customer-team"
      GITHUB_REPOSITORY: ${{ github.repository }}
      PR_NUMBER: ${{ github.event.pull_request.number }}
      PR_TITLE: ${{ github.event.pull_request.title }}
    steps:
      - name: Get PR body
        uses: actions/github-script@v7
        id: get-body
        with:
          result-encoding: string
          script: return context.payload.pull_request.body;

      - name: Notify Slack when a PR to production is opened
        run: |
          echo "${{ steps.get-body.outputs.result }}" > pr_body.md

          extract_section() {
            awk -v section="$1" '
              BEGIN {found=0}
              $0 ~ section {found=1; next}
              /^## / && found {exit}
              found {print}
            ' pr_body.md | head -c 600
          }

          DESC=$(extract_section "^## Description of change")
          TEST=$(extract_section "^## How to test")
          ISSUES=$(extract_section "^## Issue")

          PR_LINK="https://github.com/$GITHUB_REPOSITORY/pull/$PR_NUMBER"

          JSON=$(jq -n \
            --arg channel "$SLACK_CHANNEL" \
            --arg pr_number "#$PR_NUMBER" \
            --arg pr_link "$PR_LINK" \
            --arg title "$PR_TITLE" \
            --arg desc "> $(echo "$DESC" | sed 's/^/> /')" \
            --arg issues "$(echo "$ISSUES" | sed 's/^/> /')" \
            '{
              channel: $channel,
              blocks: [
                { type: "section", text: { type: "mrkdwn", text: ":rocket: A production PR <\($pr_link)|\($pr_number)> is now open!" } },
                { type: "section", text: { type: "mrkdwn", text: "*Title:*\n\($title)" } },
                { type: "section", text: { type: "mrkdwn", text: "*Description of change:*\n\($desc)" } },
                { type: "section", text: { type: "mrkdwn", text: "*Issues:*\n\($issues)" } },
                { type: "section", text: { type: "mrkdwn", text: ":link: <\($pr_link)|View PR on GitHub>" } }
              ]
            }')

          curl -X POST -H "Authorization: Bearer $SLACK_BOT_TOKEN" \
            -H 'Content-type: application/json;charset=utf-8' \
            --data "$JSON" https://slack.com/api/chat.postMessage