deploy-site.yml

name: Deploy Site to GitHub Pages

# Builds the static landing page + cost-over-time dashboard (issues #30, #31)
# and publishes them to `gh-pages`, without touching `history.json`, which
# the `record-history` job in `.github/workflows/budget.yml` appends to on
# every push to main. The `concurrency` group below is shared with that job
# so the two never race on the same branch.

on:
  push:
    branches: ["main"]
    paths:
      - "site/**"
      - ".github/workflows/deploy-site.yml"
  workflow_dispatch:

concurrency:
  group: gh-pages-deploy
  cancel-in-progress: false

permissions:
  contents: write

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v7.0.1

      - name: Build static site
        run: |
          mkdir -p dist
          cp -r site/. dist/
          # NOTE: once #30 (landing page) and #31 (dashboard) land with a real
          # frontend toolchain (e.g. Vite/Next.js/Astro), replace the two
          # lines above with that toolchain's install + build commands
          # (e.g. `npm ci` / `npm run build`) and point `publish_dir` below at
          # its build output directory instead of `dist/`.

      - name: Deploy to GitHub Pages (preserve history.json)
        uses: peaceiris/actions-gh-pages@v4
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./dist
          keep_files: true
          user_name: "github-actions[bot]"
          user_email: "github-actions[bot]@users.noreply.github.com"
          commit_message: "ci: deploy site for ${{ github.sha }}"