name: Website

on:
  # Publish the website after main's checks complete.
  workflow_run:
    workflows: [CI]
    types: [completed]
    branches:
      - main
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: github-pages
  cancel-in-progress: false

jobs:
  deploy:
    if: >-
      github.ref == 'refs/heads/main' &&
      (github.event_name == 'workflow_dispatch' ||
       (github.event.workflow_run.event == 'push' &&
        github.event.workflow_run.head_branch == 'main' &&
        github.event.workflow_run.conclusion == 'success'))
    runs-on: ubuntu-latest
    timeout-minutes: 5
    permissions:
      contents: read
      pages: write
      id-token: write
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - uses: actions/checkout@v6
        with:
          ref: ${{ github.event.workflow_run.head_sha || github.sha }}
      - uses: actions/setup-node@v6
        with:
          node-version-file: .node-version
          cache: npm
          cache-dependency-path: |
            package-lock.json
            site/docs/package-lock.json
      - run: npm ci
      - run: npm ci --prefix site/docs
      - run: npm run build:website
      - uses: actions/configure-pages@v5
      - uses: actions/upload-pages-artifact@v4
        with:
          path: build/site
          retention-days: 1
      - name: Keep older runs from replacing the current website
        id: current
        shell: bash
        run: |
          git fetch --no-tags origin main
          if [ "$(git rev-parse HEAD)" = "$(git rev-parse origin/main)" ]; then
            echo "deploy=true" >> "$GITHUB_OUTPUT"
          else
            echo "Skipped an outdated website build. Run Website again for current main." >> "$GITHUB_STEP_SUMMARY"
          fi
      - uses: actions/deploy-pages@v4
        if: steps.current.outputs.deploy == 'true'
        id: deployment