notify-slack-on-new-file.yml

name: Notify Slack on New File in _posts

on:
  push:
    branches:
      - master  # Adjust this if your main branch has a different name
    paths:
      - '_posts/**'
  workflow_dispatch: # Allows manual triggering from GitHub UI

jobs:
  notify_slack:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v2
        with:
          fetch-depth: 0  # Fetches all history for all branches and tags

      - name: Debug info
        run: |
          echo "Repository Status:"
          git status
          echo "Most Recent Commit:"
          git log -1

      - name: Check for new files
        run: |
          if git rev-parse HEAD^ >/dev/null 2>&1; then
            NEW_FILES=$(git diff --diff-filter=A --name-only HEAD^ HEAD _posts/)
            if [[ -n "$NEW_FILES" ]]; then
              MESSAGE="WTF just happened today?\n"
              for FILE in $NEW_FILES; do
                URL="https://github.com/mkiser/WTFJHT/blob/master/${FILE}"
                MESSAGE+="<${URL}|${FILE}>\n"
              done
              echo "::set-output name=message::${MESSAGE}"
            else
              echo "::set-output name=message::No new files added to _posts."
            fi
          else
            echo "No previous commit to compare."
            echo "::set-output name=message::No previous commit to compare."
          fi
        id: files

      - name: Send message to Slack
        if: steps.files.outputs.message != 'No new files added to _posts.' && steps.files.outputs.message != 'No previous commit to compare.'
        run: |
          curl -X POST -H 'Content-type: application/json' --data '{"text":"${{ steps.files.outputs.message }}"}' ${{ secrets.SLACK_WEBHOOK_URL }}