name: pages

on:
  push:
    branches:
      - main
    paths:
      - 'docs/**'
  pull_request:

jobs:
  deploy:
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - uses: actions/checkout@v3
        with:
          submodules: true
          fetch-depth: 0

      - uses: cachix/install-nix-action@v16
        with:
          install_url: https://github.com/numtide/nix-unstable-installer/releases/download/nix-2.8.0pre20220311_d532269/install
          extra_nix_config: |
            experimental-features = nix-command flakes
            allow-import-from-derivation = true

      - name: build
        run: nix run '.#docs' -- --minify

      - name: upload
        uses: actions/upload-pages-artifact@v1
        with:
          path: './docs/public'

      - name: deploy
        id: deployment
        uses: actions/deploy-pages@v1

permissions:
  contents: read
  pages: write
  id-token: write