indexnow.yml

name: IndexNow — notify search engines of new/changed posts

on:
  push:
    branches: [master]
    paths:
      - '_posts/**'

jobs:
  indexnow:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - name: Check SITE_URL variable
        run: |
          if [ -z "${{ vars.SITE_URL }}" ]; then
            echo "::warning::SITE_URL repository variable is not set. Skipping IndexNow."
            echo "SKIP=true" >> "$GITHUB_ENV"
          else
            echo "SITE_URL=${{ vars.SITE_URL }}" >> "$GITHUB_ENV"
          fi

      - name: Collect changed post URLs
        if: env.SKIP != 'true'
        run: |
          URLS=""
          for f in $(git diff --name-only HEAD~1 HEAD -- '_posts/*.md'); do
            if [ ! -f "$f" ]; then continue; fi
            # Extract permalink or derive from filename
            SLUG=$(basename "$f" .md)
            # Convert YYYY-MM-DD-slug to /YYYY/MM/DD/slug
            DATE_PART=$(echo "$SLUG" | grep -oP '^\d{4}-\d{2}-\d{2}')
            NAME_PART=$(echo "$SLUG" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-//')
            if [ -z "$DATE_PART" ] || [ -z "$NAME_PART" ]; then continue; fi
            Y=$(echo "$DATE_PART" | cut -d- -f1)
            M=$(echo "$DATE_PART" | cut -d- -f2)
            D=$(echo "$DATE_PART" | cut -d- -f3)
            URL_PATH="/${Y}/${M}/${D}/${NAME_PART}"
            URLS="${URLS}\"${SITE_URL}${URL_PATH}\","
            URLS="${URLS}\"${SITE_URL}${URL_PATH}.md\","
          done

          if [ -z "$URLS" ]; then
            echo "No post URLs to submit."
            echo "SKIP=true" >> "$GITHUB_ENV"
          else
            # Remove trailing comma
            URLS="[${URLS%,}]"
            echo "URL_LIST=${URLS}" >> "$GITHUB_ENV"
            echo "Submitting URLs: ${URLS}"
          fi

      - name: Wait for deployment
        if: env.SKIP != 'true'
        run: |
          FIRST_URL=$(echo "$URL_LIST" | python3 -c "import sys,json; print(json.loads(sys.stdin.read())[0])")
          echo "Waiting for $FIRST_URL to return 200..."
          for i in $(seq 1 30); do
            STATUS=$(curl -s -o /dev/null -w '%{http_code}' "$FIRST_URL" || echo "000")
            if [ "$STATUS" = "200" ]; then
              echo "Live after ${i}0 seconds."
              break
            fi
            echo "Attempt $i: status $STATUS, waiting 10s..."
            sleep 10
          done

      - name: Submit to IndexNow
        if: env.SKIP != 'true'
        run: |
          HOST=$(echo "$SITE_URL" | sed 's|https\?://||' | sed 's|/.*||')
          curl -s -X POST "https://api.indexnow.org/indexnow" \
            -H "Content-Type: application/json" \
            -d "{
              \"host\": \"${HOST}\",
              \"key\": \"3051777212e2813153868825e7c609ec\",
              \"keyLocation\": \"${SITE_URL}/3051777212e2813153868825e7c609ec.txt\",
              \"urlList\": ${URL_LIST}
            }" || echo "::warning::IndexNow submission failed"
          echo "IndexNow submission complete."