react/.github/workflows/shared_check_maintainer.yml

name: (Shared) Check maintainer

on:
  workflow_call:
    inputs:
      actor:
        required: true
        type: string
    outputs:
      is_core_team:
        value: ${{ jobs.check_maintainer.outputs.is_core_team }}

permissions: {}

env:
  TZ: /usr/share/zoneinfo/America/Los_Angeles
  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1

jobs:
  check_maintainer:
    runs-on: ubuntu-latest
    permissions:
      # We fetch the contents of the MAINTAINERS file
      contents: read
    outputs:
      is_core_team: ${{ steps.check_if_actor_is_maintainer.outputs.result }}
    steps:
      - name: Check if actor is maintainer
        id: check_if_actor_is_maintainer
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const actor = '${{ inputs.actor }}';
            const res = await github.rest.repos.getContent({
              owner: 'facebook',
              repo: 'react',
              path: 'MAINTAINERS',
              ref: 'main',
              headers: { Accept: 'application/vnd.github+json' }
            });
            if (res.status !== 200) {
              console.error(res);
              throw new Error('Unable to fetch MAINTAINERS file');
            }
            content = Buffer.from(res.data.content, 'base64').toString();
            if (content == null || typeof content !== 'string') {
              throw new Error('Unable to retrieve MAINTAINERS file');
            }

            const maintainers = new Set(content.split('\n'));
            if (maintainers.has(actor)) {
              console.log(`🟢 ${actor} is a maintainer`);
              return true;
            }
            console.log(`🔴 ${actor} is NOT a maintainer`);
            return null;