name: Documentation site

on:
  push:
    branches: ["master"]
    paths:
      - "_config.yml"
      - "_layouts/**"
      - "assets/**"
      - "docs/**"
      - "index.html"
      - "robots.txt"
      - "sitemap.xml"
      - ".github/workflows/pages.yml"
  pull_request:
    paths:
      - "_config.yml"
      - "_layouts/**"
      - "assets/**"
      - "docs/**"
      - "index.html"
      - "robots.txt"
      - "sitemap.xml"
      - ".github/workflows/pages.yml"
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: pg_local_cache-pages-${{ github.ref }}
  cancel-in-progress: true

jobs:
  validate:
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-24.04
    timeout-minutes: 10
    steps:
      - name: Check out source
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Build Jekyll site without deployment
        uses: actions/jekyll-build-pages@44a6e6beabd48582f863aeeb6cb2151cc1716697 # v1
        with:
          source: ./
          destination: ./_site

  deploy:
    if: github.event_name != 'pull_request'
    runs-on: ubuntu-24.04
    timeout-minutes: 10
    permissions:
      contents: read
      pages: write
      id-token: write
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - name: Check out source
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Configure Pages
        uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5.0.0

      - name: Build Jekyll site
        uses: actions/jekyll-build-pages@44a6e6beabd48582f863aeeb6cb2151cc1716697 # v1
        with:
          source: ./
          destination: ./_site

      - name: Upload Pages artifact
        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3.0.1

      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4