name: Deploy to GitHub Pages

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Emacs
        uses: purcell/setup-emacs@master
        with:
          version: 29.1

      - name: Setup Cask
        uses: conao3/setup-cask@master
        with:
          version: snapshot

      - name: Install dependencies
        working-directory: gen-gh-pages
        run: cask install

      - name: Generate HTML
        working-directory: gen-gh-pages
        run: |
          cask exec emacs --script generate-html.el
          mv ../dotfiles/emacs.d/README.html ./index.html

      - name: Deploy to GitHub Pages
        if: github.event_name == 'push' && github.ref == 'refs/heads/master'
        uses: peaceiris/actions-gh-pages@v4
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./gen-gh-pages
          publish_branch: gh-pages
          user_name: 'github-actions[bot]'
          user_email: 'github-actions[bot]@users.noreply.github.com'
          commit_message: 'Deploy to GitHub Pages: ${{ github.sha }}'
          keep_files: false