GitHub Action to Count Number of Approvals

check-approvals.yml

# 1. Create a project variable named `MIN_APPROVALS_NEEDED`, must be an integer
# 2. Check approvals will use the token to fetch REST API and get the reviews for a current Pull Request
# 3. With JQ it parses all that has label "APPROVED" and count
# 4. If greater or equal, exit successfully. Otherwise, fail
#

env:
  MIN_APPROVALS_NEEDED: ${{ vars.MIN_APPROVALS_NEEDED }}

jobs:
  check-approvals:
    if: github.event.review.state == 'approved'
    runs-on: ubuntu-latest
    steps:
      - uses: octokit/request-action@v2.x
        id: check_approvals
        with:
          route: GET /repos/${{ github.repository }}/pulls/${{ github.event.review.number }}/reviews
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - id: test_variables
        run: |
          JSON_RESPONSE='${{ steps.check_approvals.outputs.data }}'
          CURRENT_APPROVALS_COUNT=$(echo $JSON_RESPONSE | jq -c '[.[] | select(.state | contains("APPROVED")) ] | length')
          test $CURRENT_APPROVALS_COUNT -ge ${{ env.MIN_APPROVALS_NEEDED }} || exit 1