name: Version Check

on:
  pull_request:
    paths:
      - 'main.go'
      - 'internal/**'

jobs:
  check-version:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check version bump
        run: |
          BASE_VERSION=$(git show origin/${{ github.base_ref }}:main.go | grep -oP 'version string = "\K[^"]+')
          HEAD_VERSION=$(grep -oP 'version string = "\K[^"]+' main.go)
          if [ "$BASE_VERSION" = "$HEAD_VERSION" ]; then
            echo "::warning::Version in main.go has not been bumped (still ${HEAD_VERSION}). Consider updating it for this release."
          else
            echo "Version bumped: ${BASE_VERSION} → ${HEAD_VERSION}"
          fi