name: Deploy to GitHub Pages

on:
  push:
    branches:
      - main

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20

      - name: Install dependencies
        run: npm ci

      - name: Build project
        run: npm run build

      - name: Copy CNAME (if exists)
        run: |
          if [ -f public/CNAME ]; then
            cp public/CNAME public/build/CNAME
          fi

      - name: Deploy to GitHub Pages
        uses: peaceiris/actions-gh-pages@v4
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./public/build
          publish_branch: gh-pages