name: Update Serial Number Daily

on:
  schedule:
    - cron: '0 0 * * *'  # Runs every day at midnight UTC
  workflow_dispatch:  # Allows manual triggering

jobs:
  update-serial:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          token: ${{ secrets.PAT_TOKEN }}

      - name: Update serial number
        run: |
          # Get today's date in YYYYMMDD format
          DATE=$(date -u +"%Y%m%d")

          FILE="bind9/zone_template.txt"

          sed -i "s/[0-9]\{10\}/$(date +%Y%m%d)01/" $FILE

      - name: Commit changes
        uses: EndBug/add-and-commit@v9
        with:
          add: 'bind9/zone_template.txt'
          message: 'Update serial number with current date'
          author_name: 'GitHub Actions'
          author_email: 'actions@github.com'
          token: ${{ secrets.PAT_TOKEN }}