star-history.yml

name: star-history

# Regenerates the self-hosted star-history chart committed at assets/star-history-*.svg.
#
# Why self-hosted: the third-party chart services the README used previously
# (star-history.com, starchart.cc) return 500s and rate-limit errors, which
# silently blanks the chart. Rendering from GitHub's own API removes that
# runtime dependency — the README shows a committed asset that always loads.
#
# No external dependencies — stdlib Python plus the preinstalled gh CLI.

on:
  schedule:
    - cron: "17 4 * * *" # daily, 04:17 UTC
  workflow_dispatch: # manual refresh

permissions:
  contents: write

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

jobs:
  refresh:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Regenerate chart
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: python3 scripts/gen_star_history.py

      - name: Commit if changed
        run: |
          if git diff --quiet -- assets/star-history-light.svg assets/star-history-dark.svg; then
            echo "chart unchanged — nothing to commit"
            exit 0
          fi
          git config user.name  "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add assets/star-history-light.svg assets/star-history-dark.svg
          git commit -m "chore(assets): refresh star history chart"
          git push