require-reviewers.yaml

name: PR requirements
on:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
      - ready_for_review
      - review_requested
      - review_request_removed
      - auto_merge_enabled

  merge_group:
    types: [checks_requested]

  # Allow calling sharing this workflow with other repositories.
  workflow_call:

jobs:
  require-reviewer:
    runs-on: ubuntu-latest

    permissions:
      pull-requests: write

    steps:
      - name: Check for reviewers or reviews
        run: |
          # Ensure jq is installed
          sudo apt-get install jq

          jq -r ".pull_request.requested_reviewers" "$GITHUB_EVENT_PATH" | tee reviewers.json
          REVIEWER_COUNT=$(cat reviewers.json | jq length)
          if [ $REVIEWER_COUNT -ne 0 ]; then
            exit 0
          fi

          jq -r ".pull_request.number" "$GITHUB_EVENT_PATH" | tee number.json
          ISSUE_NUMBER=$(cat number.json | tr -d '\n')

          if [ "$ISSUE_NUMBER" == "null" ]; then
            echo "Not a PR - do not reqire reviewers"
            exit 0
          fi

          curl \
            --url https://api.github.com/repos/${{ github.repository }}/pulls/$ISSUE_NUMBER/reviews \
            --header 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' \
            --header 'content-type: application/json' | tee reviews.json

          REVIEW_COUNT=$(cat reviews.json | jq length)
          if [ $REVIEW_COUNT -ne 0 ]; then
            exit 0
          fi

          echo "No reviewer and no review found."
          exit 1