website.yml

name: Website

on:
  push:
    branches: [ master ]

jobs:

  build:
    name: Website
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: '22'
          cache: npm
          cache-dependency-path: website/package-lock.json

      # The Hexo site only needs Node and Python 3 (preinstalled on the
      # runner). The old pipeline shelled out to a hand-maintained 3.4 GB
      # texlive Docker image just to also build the PDF/epub; that image
      # silently drifted to a 2019 Node and broke the build. We deploy the
      # website only here. The PDF/epub already on the server are left in
      # place (scp overwrites, never deletes), so their download links keep
      # working until those artifacts are rebuilt separately.
      - name: Install website dependencies
        run: npm ci --prefix website

      - name: Build website
        run: cd website && make

      - name: Deploy to server
        env:
          USER: ${{ secrets.SERVER_USER }}
          TARGET: ${{ secrets.SERVER_PATH }}
          KEY: ${{ secrets.SERVER_KEY }}
          DOMAIN: ${{ secrets.SERVER_DOMAIN }}
        run: |
          mkdir -p ~/.ssh
          echo "$KEY" | tr -d '\r' > ~/.ssh/id_ed25519
          chmod 400 ~/.ssh/id_ed25519
          ssh-keyscan -H "$DOMAIN" >> ~/.ssh/known_hosts
          scp -i ~/.ssh/id_ed25519 -r website/public/modern-cpp/* "$USER@$DOMAIN:$TARGET"