Libation/.github/workflows/exempt-creators-backfill.yml

# One-time or occasional backfill: add `exempt` to open issues/PRs opened by
# rmcrackan or Mbucari that predate exempt-creators.yml. Run from Actions →
# "Exempt creators backfill" → Run workflow.
---
name: Exempt creators backfill

on:
  workflow_dispatch:

permissions:
  issues: write
  pull-requests: write

jobs:
  backfill:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/github-script@v9
        with:
          script: |
            const exemptLabel = 'exempt';
            const creators = new Set(['rmcrackan', 'mbucari']);

            const owner = context.repo.owner;
            const repo = context.repo.repo;

            const items = await github.paginate(github.rest.issues.listForRepo, {
              owner,
              repo,
              state: 'open',
              per_page: 100,
            });

            let labeled = 0;
            let notCreator = 0;
            let alreadyExempt = 0;

            for (const item of items) {
              const login = item.user && item.user.login;
              if (!login || !creators.has(login.toLowerCase())) {
                notCreator++;
                continue;
              }

              const names = item.labels.map((l) => l.name);
              if (names.some((n) => n.toLowerCase() === exemptLabel)) {
                alreadyExempt++;
                continue;
              }

              try {
                await github.rest.issues.addLabels({
                  owner,
                  repo,
                  issue_number: item.number,
                  labels: [exemptLabel],
                });
                labeled++;
              } catch (e) {
                core.warning(`#${item.number}: ${e.message}`);
              }
            }

            core.info(
              `Backfill done: added exempt to ${labeled} item(s); ` +
                `${alreadyExempt} already had exempt; ${notCreator} not from rmcrackan/Mbucari.`
            );