name: Enable auto-merge for open PRs

on:
  workflow_dispatch: {}
  pull_request:
    types: [opened, reopened,ready_for_review]

permissions:
  contents: write
  pull-requests: write

jobs:
  enable:
    runs-on: ubuntu-latest
    steps:
      - name: Enable auto-merge for all open PRs (and the current one)
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REPO: ${{ github.repository }}
        run: |
          set -euo pipefail

          echo "Listing open PRs in $REPO..."
          prs=$(gh pr list --repo "$REPO" --state open --json number --jq '.[].number')

          if [ -z "$prs" ]; then
            echo "No open PRs."
            exit 0
          fi

          for pr in $prs; do
            echo "Enabling auto-merge for PR #$pr"
            # Choose merge strategy: --merge | --squash | --rebase
            # Use --merge here; change if you prefer squash:
            gh pr merge "$pr" --repo "$REPO" --auto --merge || true
          done