name: Update License Year

on:
  schedule:
    - cron: '0 0 1 1 *'
  workflow_dispatch: 

permissions:
  contents: write

jobs:
  update-license:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Update year in LICENSE
        run: |
          CURRENT_YEAR=$(date +'%Y')
          sed -i -E "s/Copyright \(c\) ([0-9]{4})(-[0-9]{4})?/Copyright (c) \1-$CURRENT_YEAR/" LICENSE

      - name: Commit and push changes
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git add LICENSE
          
          if git diff --staged --quiet; then
            echo "No changes needed"
          else
            git commit -m "chore: update license year to $(date +'%Y')"
            git push
          fi
