name: Auto Merge

on:
  pull_request:
    types: [opened, reopened, ready_for_review]

permissions:
  contents: write
  pull-requests: write

jobs:
  auto-merge:
    if: "!github.event.pull_request.draft"
    runs-on: ubuntu-latest
    steps:
      - name: Check org membership and enable auto-merge
        uses: actions/github-script@v7
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
        with:
          script: |
            const { owner, repo } = context.repo;
            const author = context.payload.pull_request.user.login;

            try {
              await github.rest.orgs.checkMembershipForUser({
                org: owner,
                username: author,
              });
            } catch {
              core.info(`${author} is not an org member — skipping auto-merge`);
              return;
            }

            await exec.exec('gh', [
              'pr', 'merge', process.env.PR_NUMBER,
              '--auto', '--squash',
            ]);
            core.info(`Auto-merge enabled for #${process.env.PR_NUMBER}`);