pr-labeler.yml

# Apply labels to PRs based on changed file paths (apps, packages, docs, infra, ci, scripts, tools, i18n).
# Requires labels to exist; run scripts/github/setup-all-labels.sh first.

name: PR Labeler

on:
  pull_request_target:
    types: [opened, synchronize]

jobs:
  label:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
      issues: write
    steps:
      - name: Label PR based on changed files
        uses: actions/github-script@v9
        with:
          script: |
            const files = await github.paginate(github.rest.pulls.listFiles, {
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number,
              per_page: 100
            });
            const paths = files.map(f => f.filename);
            const labels = new Set();
            for (const file of paths) {
              if (file.startsWith('apps/')) labels.add('apps');
              if (file.startsWith('packages/')) labels.add('packages');
              if (file.startsWith('docs/')) labels.add('docs');
              if (file.startsWith('infra/')) labels.add('infra');
              if (file.startsWith('.github/')) labels.add('ci');
              if (file.startsWith('scripts/')) labels.add('scripts');
              if (file.startsWith('tools/')) labels.add('tools');
              if (file.includes('/i18n/')) labels.add('i18n');
            }
            if (labels.size > 0) {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                labels: Array.from(labels)
              });
            }