name: Deploy to GitHub Pages

on:
  push:
    branches: [main]
  workflow_dispatch:

# Top-level read permission; write permissions scoped to the deploy job.
permissions:
  contents: read

concurrency:
  group: pages
  cancel-in-progress: true

env:
  RUNTIME_VERSION: "0.9"

jobs:
  build:
    name: Build web bundle
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Set up Python 3.11
        uses: actions/setup-python@v6
        with:
          python-version: "3.11"
          cache: pip

      - name: Syntax check
        run: python -m py_compile main.py arcade_app.py

      - name: Build web bundle
        # Build the regular browser bundle plus the iOS fullscreen variant at /ios/.
        # The Makefile handles the repo's browser-build dependencies and avoids
        # any runtime dependency on the external pygame-web CDN.
        run: make web-pages-build

      - name: Verify build output
        # Fail fast if the Pages artifact is missing the entry point or runtime.
        run: |
          test -f build/web/index.html || { echo "build/web/index.html missing"; exit 1; }
          test -f build/web/manifest.webmanifest || { echo "build/web/manifest.webmanifest missing"; exit 1; }
          test -f build/web/favicon.ico || { echo "build/web/favicon.ico missing"; exit 1; }
          test -f build/web/icons/icon-192.png || { echo "build/web/icons/icon-192.png missing"; exit 1; }
          test -f build/web/icons/maskable-512.png || { echo "build/web/icons/maskable-512.png missing"; exit 1; }
          test -f build/web/og-image.png || { echo "build/web/og-image.png missing"; exit 1; }
          test -f build/web/coi-serviceworker.js || { echo "build/web/coi-serviceworker.js missing"; exit 1; }
          test -f build/web/archives/${RUNTIME_VERSION}/pythons.js || { echo "build/web/archives/${RUNTIME_VERSION}/pythons.js missing"; exit 1; }
          test -f build/web/archives/${RUNTIME_VERSION}/browserfs.min.js || { echo "build/web/archives/${RUNTIME_VERSION}/browserfs.min.js missing"; exit 1; }
          test -f build/web/archives/${RUNTIME_VERSION}/vt/xterm.css || { echo "build/web/archives/${RUNTIME_VERSION}/vt/xterm.css missing"; exit 1; }
          test -f build/web/ios/index.html || { echo "build/web/ios/index.html missing"; exit 1; }
          test -f build/web/ios/manifest.webmanifest || { echo "build/web/ios/manifest.webmanifest missing"; exit 1; }
          test -f build/web/ios/archives/${RUNTIME_VERSION}/pythons.js || { echo "build/web/ios/archives/${RUNTIME_VERSION}/pythons.js missing"; exit 1; }

      - name: Upload Pages artifact
        uses: actions/upload-pages-artifact@v5
        with:
          path: build/web

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