name: Deploy demo to GitHub Pages

# Builds the demo site (dev/ → build/) and publishes it to https://phucbm.github.io/cuajs/.
# Repo setting: Settings → Pages → Source = "GitHub Actions".

on:
  push:
    branches: [main]
  workflow_dispatch:

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

# one deploy at a time; let a running deploy finish instead of cancelling it mid-way
concurrency:
  group: pages
  cancel-in-progress: false

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

      # pnpm version comes from package.json's "packageManager"
      - uses: pnpm/action-setup@v6

      - uses: actions/setup-node@v7
        with:
          node-version: '22'
          cache: 'pnpm'

      - run: pnpm install --frozen-lockfile

      - run: pnpm run build

      - uses: actions/configure-pages@v6

      - uses: actions/upload-pages-artifact@v5
        with:
          path: build/

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