name: Build docs and deploy GitHub Pages
on:
  push: # run on any branch, but deploy only on main
  pull_request:
    branches:
      - main
  workflow_dispatch: # allow this task to be manually started

jobs:
  build-docs:
    name: Run build docs
    runs-on: ubuntu-latest
    env:
      GO_VERSION: 1.25.1
      HUGO_VERSION: 0.125.1
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive
          fetch-depth: 0

      - name: Setup Go
        uses: actions/setup-go@v6
        with:
          go-version: ${{ env.GO_VERSION }}
          cache: false

      - name: Create directory for user-specific executable files
        run: |
          mkdir -p "${HOME}/.local"

      - name: Install Hugo
        run: |
          curl -sLJO "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_linux-amd64.tar.gz"
          mkdir "${HOME}/.local/hugo"
          tar -C "${HOME}/.local/hugo" -xf "hugo_extended_${HUGO_VERSION}_linux-amd64.tar.gz"
          rm "hugo_extended_${HUGO_VERSION}_linux-amd64.tar.gz"
          echo "${HOME}/.local/hugo" >> "${GITHUB_PATH}"

      - name: Build the site
        run: |
          hugo --gc --minify --source ./docs

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v4
        with:
          path: ./docs/public

  deploy:
    if: github.ref == 'refs/heads/main'
    permissions:
      id-token: write
      pages: write
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    needs: build-docs
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4