ProgramVisualization/.github/workflows/pages.yml at main · cohm/ProgramVisualization · GitHub

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name: Deploy to GitHub Pages

# Builds a static-export variant of the app (no server-side PDF route)
# and deploys it to GitHub Pages on every push to main. The Vercel
# deployment continues to host the full version with PDF export.
#
# Setup (one-time, on the repo): Settings → Pages → "Build and
# deployment" → Source: "GitHub Actions". After the first successful
# run, the site is at https://<user>.github.io/<repo>/.

on:
  push:
    branches:
      - main
  workflow_dispatch:

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

# Allow only one Pages deploy at a time, but don't cancel an in-flight
# deploy mid-upload — we want every push to main to publish.
concurrency:
  group: pages
  cancel-in-progress: false

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v7

      - name: Setup Node.js
        uses: actions/setup-node@v7
        with:
          # Node 24 (Krypton) is the current active LTS, EOL 2028-04-30.
          # Node 20 went EOL 2026-04-30 and is below the floor declared by
          # puppeteer-core and size-limit (engines.node >= 22.12.0), which is
          # what the EBADENGINE warnings on every `npm ci` were about.
          node-version: 24
          cache: npm

      - name: Install dependencies
        run: npm ci

      - name: Strip server-only API routes
        # `next export` (output: 'export') refuses to build with route
        # handlers in the tree. Delete them; the "Save PDF" button is
        # gated on NEXT_PUBLIC_DISABLE_PDF=1 so nothing in the client
        # bundle still calls /api/export-pdf.
        run: rm -rf src/app/api

      - name: Configure Pages
        uses: actions/configure-pages@v6

      - name: Build static site
        env:
          BUILD_TARGET: pages
          NEXT_PUBLIC_DISABLE_PDF: '1'
        run: npm run build

      - name: Upload Pages artifact
        uses: actions/upload-pages-artifact@v5
        with:
          path: ./out

  deploy:
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v5