name: documentation

on:
  pull_request:
    types:
      - closed

permissions:
  contents: write

jobs:
  docs:
    if: ${{ github.event.pull_request.merged == true && github.event.pull_request.base.ref == 'main' }}
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: ./docs
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
      - name: Install dependencies
        run: |
          pip install -r requirements.txt
      - name: Sphinx build
        run: |
          make html
          cp CNAME _build/html
      - name: Deploy to GitHub Pages
        uses: peaceiris/actions-gh-pages@v3
        with:
          publish_branch: gh-pages
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: docs/_build/html
          force_orphan: true