name: Generate Directory Listing and Deploy to GitHub Pages

on: [push]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2

    - name: Set up Python
      uses: actions/setup-python@v2
      with:
        python-version: 3.8

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install beautifulsoup4

    - name: Generate Directory Listing
      run: |
        import os
        import pathlib
        from bs4 import BeautifulSoup

        def create_index_html(path):
            soup = BeautifulSoup("<html><body><ul></ul></body></html>", "html.parser")
            ul = soup.find("ul")

            for child in sorted(path.iterdir()):
                li = soup.new_tag("li")
                a = soup.new_tag("a", href=str(child))
                a.string = str(child)
                li.append(a)
                ul.append(li)

            with open(path / "index.html", "w") as f:
                f.write(str(soup))

        root = pathlib.Path(".")
        for path in sorted(root.rglob('*')):
            if path.is_dir():
                create_index_html(path)

    - name: Deploy to GitHub Pages
      uses: peaceiris/actions-gh-pages@v3
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        publish_dir: .