slack_notifier_open_pulls.yml

name: "post open pulls to slack"

on:
  schedule:
    # Run weekdays at 13:00 Eastern / 10:00 Pacific
    - cron: "0 17 * * 1-5"

jobs:
  list-open-prs:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: read
      issues: read

    steps:
    - name: Check out the repository
      uses: actions/checkout@v4

    - name: List open pull requests
      id: list_prs
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        GITHUB_REPO: ${{ github.repository }}
      run: >
        PR_LIST=$(scripts/open_pulls.sh)

        MSG=":code-review: Open Pull Requests\n\n"

        while IFS= read -r line; do
          MSG+="$line\n"
        done < <(echo "$PR_LIST" | jq -r '.[] | " - <\(.html_url)|\(.title)> opened by \(.user) \(.time_since) days ago"')

        echo "MSG=$MSG" >> $GITHUB_ENV
          # Check if PR_LIST is empty and set a flag
        if [ "$PR_LIST" == "[]" ]; then
          echo "SHOULD_POST_TO_SLACK=false" >> $GITHUB_ENV
        else
          echo "SHOULD_POST_TO_SLACK=true" >> $GITHUB_ENV
        fi

    - name: Post to Slack
      id: slack
      uses: slackapi/slack-github-action@v1.27.0
      if: ${{ env.SHOULD_POST_TO_SLACK == 'true' }}
      with:
        payload: |
          {
            "text": "${{ env.MSG }}",
            "blocks": [
              {
                "type": "section",
                "text": {
                  "type": "mrkdwn",
                  "text": "${{ env.MSG }}"
                }
              }
            ]
          }
      env:
        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
        SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK