name: update-star-history

on:
  schedule:
    - cron: "37 2 * * *"
  workflow_dispatch:

permissions:
  contents: write

concurrency:
  group: update-star-history-${{ github.repository }}
  cancel-in-progress: false

jobs:
  update:
    name: Refresh repository-owned Star chart
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
      - name: Check out the default branch
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
        with:
          ref: ${{ github.event.repository.default_branch }}

      - name: Use Node.js 24
        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
        with:
          node-version: "24"

      - name: Fetch Stargazers and generate both SVG themes
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          set -euo pipefail
          gh api \
            --paginate \
            --slurp \
            --header 'Accept: application/vnd.github.star+json' \
            --header 'X-GitHub-Api-Version: 2026-03-10' \
            "repos/${GITHUB_REPOSITORY}/stargazers?per_page=100" |
          node scripts/generate_star_history.mjs \
            --input - \
            --output-dir docs/assets \
            --repository "${GITHUB_REPOSITORY}"

      - name: Commit changed charts
        run: |
          set -euo pipefail
          status_file="${RUNNER_TEMP}/star-history-status"
          git status --porcelain -- \
            docs/assets/star-history-light.svg \
            docs/assets/star-history-dark.svg \
            > "${status_file}"

          if [[ ! -s "${status_file}" ]]; then
            echo 'Star history charts are already current.' >> "${GITHUB_STEP_SUMMARY}"
            exit 0
          fi

          git config user.name 'github-actions[bot]'
          git config user.email '41898282+github-actions[bot]@users.noreply.github.com'
          git add -- \
            docs/assets/star-history-light.svg \
            docs/assets/star-history-dark.svg
          git commit -m 'docs: update Star growth chart'
          git push
          echo 'Updated the repository-owned Star history charts.' >> "${GITHUB_STEP_SUMMARY}"