name: Star history

# GitHub restricted the stargazers API to a repo's own admins and collaborators,
# so no third-party service can chart this repo any more. GITHUB_TOKEN can read
# it, so we regenerate the committed SVG here instead.
on:
  schedule:
    - cron: "17 3 * * 1" # Mondays, 03:17 UTC
  workflow_dispatch:

concurrency:
  group: star-history
  cancel-in-progress: true

jobs:
  refresh:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
      - name: Set up Node.js
        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4
        with:
          node-version: 22
      - name: Regenerate the chart
        run: node scripts/gen-star-history.mjs
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - name: Commit when the chart moved
        run: |
          if git diff --quiet -- assets/star-history.svg assets/star-history.json; then
            echo "No change."
            exit 0
          fi
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git commit -m "chore: refresh the star history chart" -- assets/star-history.svg assets/star-history.json
          git push