add-servicing-consider-label.yml

name: Add Servicing-consider Label to PRs

on:
  # zizmor: ignore[dangerous-triggers] -- no PR code is checked out; only adds a label via API
  pull_request_target:
    types: [opened, reopened, ready_for_review]
    branches:
      - 'release/[0-9]*'

permissions:
  contents: read
  pull-requests: write

env:
  DOTNET_CLI_TELEMETRY_SESSIONID: gha-${{ github.repository_id }}-${{ github.run_id }}-${{ github.run_attempt }}

jobs:
  add-servicing-label:
    runs-on: ubuntu-latest
    # Only run in the dotnet/sdk repository
    if: github.repository == 'dotnet/sdk'

    steps:
      - name: Add Servicing-consider label if needed
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
        with:
          script: |
            const pr = context.payload.pull_request;
            const prNumber = pr.number;

            // Skip if the PR already has the Servicing-consider or Servicing-approved label
            const labels = pr.labels.map(l => l.name);
            if (labels.includes('Servicing-consider') || labels.includes('Servicing-approved')) {
              console.log('PR already has a servicing label, skipping.');
              return;
            }

            // Skip codeflow PRs: inter-branch merge flow and darc subscription PRs.
            // Only skip known codeflow bot accounts; other bots (e.g. Dependabot) should
            // still receive the label. Backport PRs carry the 'backport' label and are
            // also exempt from this skip.
            const author = pr.user.login;
            const codeflowBots = ['dotnet-maestro[bot]', 'github-actions[bot]', 'dotnet-maestro'];
            const isBackport = labels.includes('backport');
            if (codeflowBots.includes(author) && !isBackport) {
              console.log(`Skipping codeflow PR authored by bot: ${author}`);
              return;
            }

            // Skip branding and internal-to-public flow PRs from vseanreesermsft
            if (author === 'vseanreesermsft') {
              console.log(`Skipping branding/internal-to-public PR authored by: ${author}`);
              return;
            }

            // Fetch all changed files in the PR (paginated to handle large PRs)
            let files = [];
            let page = 1;
            while (true) {
              const { data: pageFiles } = await github.rest.pulls.listFiles({
                owner: context.repo.owner,
                repo: context.repo.repo,
                pull_number: prNumber,
                per_page: 100,
                page: page
              });
              files = files.concat(pageFiles);
              if (pageFiles.length < 100) break;
              page++;
            }

            // Skip test-only PRs: all changed files are under test/ directories
            const isTestOnly = files.length > 0 && files.every(file =>
              file.filename.startsWith('test/')
            );

            if (isTestOnly) {
              console.log('PR only contains test changes, skipping.');
              return;
            }

            // Add the Servicing-consider label
            await github.rest.issues.addLabels({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
              labels: ['Servicing-consider']
            });
            console.log(`Added Servicing-consider label to PR #${prNumber}.`);