www.yml

name: Build + Deploy to GitHub Pages
on:
  push:
    branches:
      - www
  workflow_call:
  workflow_dispatch:
jobs:
  run:
    name: Build + Deploy to GitHub Pages (iff www/ has changed since last gh-pages push)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: pnpm/action-setup@v2
        with:
          version: 8
      - run: git fetch origin gh-pages
      - id: base-sha
        run: echo "BASE_SHA=$(./parse-ghp-base-sha.py -d root origin/gh-pages)" >> $GITHUB_OUTPUT
      - name: Check whether www was changed
        id: www-changed
        env:
          BASE_SHA: ${{ steps.base-sha.outputs.BASE_SHA }}
        run: |
          echo "BASE_SHA: $BASE_SHA"
          git fetch --depth 1 origin $BASE_SHA
          echo "WWW_CHANGED=$([ $BASE_SHA != 'root' ] && git diff --quiet $BASE_SHA && echo '' || echo 'true')" >> $GITHUB_OUTPUT
      - run: |
          echo "WWW_CHANGED: ${{ steps.www-changed.outputs.WWW_CHANGED }}"
      - if: steps.www-changed.outputs.WWW_CHANGED
        uses: actions/setup-node@v3
        with:
          node-version: 19
          cache: 'pnpm'
          cache-dependency-path: www/pnpm-lock.yaml
      - if: steps.www-changed.outputs.WWW_CHANGED
        name: pnpm install, build, export
        run: |
          cd www
          pnpm install
          pnpm run gha-export
      - if: steps.www-changed.outputs.WWW_CHANGED
        name: Deploy to GH Pages
        uses: JamesIves/github-pages-deploy-action@v4
        with:
          branch: gh-pages
          folder: www/out