check-version-bump.yaml

name: Check Version Bump

on:
  pull_request:
    branches:
      - main

jobs:
  check-version-bump:
    name: Enforce version bump when src/ is modified
    runs-on: ${{ contains(github.server_url, 'github.com') && 'ubuntu-latest' || fromJSON('["self-hosted"]') }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check that version was bumped if src/ was modified
        run: |
          BASE_SHA="${{ github.event.pull_request.base.sha }}"
          HEAD_SHA="${{ github.event.pull_request.head.sha }}"

          CHANGED_FILES=$(git diff --name-only "$BASE_SHA" "$HEAD_SHA")

          if echo "$CHANGED_FILES" | grep -q "^src/"; then
            VERSION_BUMPED=$(git diff -U0 "$BASE_SHA" "$HEAD_SHA" -- pyproject.toml \
              | grep "^+version = ")

            if [ -z "$VERSION_BUMPED" ]; then
              echo "ERROR: Files under src/ were modified but the version in pyproject.toml was not bumped."
              exit 1
            else
              echo "Version bump detected: $VERSION_BUMPED"
            fi
          else
            echo "No src/ changes. Version bump not required."
          fi