require-merge-via-rc.yaml

name: "require PRs to be merged via 'rc-*' branches"

on:
  pull_request:
    types: [opened, edited, synchronize]

jobs:
  check-branch-name:
    runs-on: ubuntu-latest

    steps:
      - name: Check that PR's base branch is an 'rc-' branch, unless the head branch is an 'rc-' branch
        run: |
          BASE_BRANCH="${{ github.event.pull_request.base.ref }}"
          HEAD_BRANCH="${{ github.event.pull_request.head.ref }}"

          # Check if base branch starts with 'rc-'
          if [[ "$BASE_BRANCH" != rc-* && "$HEAD_BRANCH" != rc-* ]]; then
            echo "Error: The base branch '$BASE_BRANCH' is not an 'rc-' branch; and the head branch '$HEAD_BRANCH' is not an 'rc-' branch."
            exit 1
          fi