pages.yml

name: Deploy examples to GitHub Pages

#  Builds the Phaser engine at the repo root, then builds the Vite/React
#  examples gallery under `examples/` and publishes its `dist/` output to
#  GitHub Pages. The gallery is served from
#  https://phaserjs.github.io/phas3d/ so we pass `VITE_BASE=/phas3d/` to
#  Vite, which rewrites every emitted asset URL with that prefix.
#
#  One-time setup required in the repo on GitHub:
#    Settings -> Pages -> Build and deployment -> Source: "GitHub Actions"

on:
  push:
    branches: [main]
  workflow_dispatch:

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

#  A single in-flight deploy at a time; new pushes cancel older runs that
#  haven't published yet so the latest commit always wins.
concurrency:
  group: pages
  cancel-in-progress: true

jobs:
  build:
    name: Build engine + examples
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: npm
          cache-dependency-path: |
            package-lock.json
            examples/package-lock.json

      - name: Install root deps
        run: npm ci

      - name: Build Phaser (produces build/phaser.js)
        run: npm run build

      - name: Install examples deps
        working-directory: examples
        run: npm ci

      - name: Build examples gallery
        working-directory: examples
        env:
          VITE_BASE: /phas3d/
        run: npm run build

      - name: Configure Pages
        uses: actions/configure-pages@v5

      - name: Upload Pages artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: examples/dist

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