copperhead

name: Deploy docs

on:
  push:
    branches: [main]
    paths:
      - 'docs/**'
      - '.github/workflows/docs.yml'
  workflow_dispatch:

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

# Let one deploy finish rather than cancelling it mid-publish.
concurrency:
  group: pages
  cancel-in-progress: false

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0 # lastUpdated timestamps come from git history
      - uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: npm
          cache-dependency-path: docs/package-lock.json
      - run: npm ci
        working-directory: docs
      - run: npm run build
        working-directory: docs

      # The docs own this subdomain outright, so the build output sits at the
      # artifact root. The apex, copperhead.sh, is served separately by the
      # copperhead-site Cloudflare Worker and is not touched here.
      - name: Assemble Pages artifact
        run: |
          mkdir -p _site
          cp -r docs/dist/. _site/
          echo 'docs.copperhead.sh' > _site/CNAME

      - uses: actions/configure-pages@v5
      - uses: actions/upload-pages-artifact@v3
        with:
          path: _site

  deploy:
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - id: deployment
        uses: actions/deploy-pages@v4