check-version.yml

name: Check version

on:
  push:
    branches:
      - master
    paths-ignore:
      - README.md
      - CHANGELOG.md
      - .gitignore
      - 'CITATION.cff'
  pull_request:
    branches:
      - master
    paths-ignore:
      - README.md
      - CHANGELOG.md
      - .gitignore
      - 'CITATION.cff'

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  check_version:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Parse versions from pyproject.toml and CITATION.cff
        id: versions
        run: |
          PYPROJECT_VER=$(grep -m1 '^version' pyproject.toml | sed 's/version\s*=\s*"\(.*\)"/\1/')
          CITATION_VER=$(grep -m1 '^version:' CITATION.cff | sed 's/version:\s*//')
          echo "pyproject=$PYPROJECT_VER" >> $GITHUB_OUTPUT
          echo "citation=$CITATION_VER" >> $GITHUB_OUTPUT
          echo "pyproject.toml version : $PYPROJECT_VER"
          echo "CITATION.cff version   : $CITATION_VER"

      - name: Get latest git tag
        id: tag
        run: |
          LATEST=$(git tag --sort=-version:refname | head -n1)
          echo "tag=$LATEST" >> $GITHUB_OUTPUT
          echo "Latest tag: $LATEST"

      - name: Check versions
        run: |
          python3 - <<'EOF'
          from packaging.version import Version
          import sys

          pyproject_ver = "${{ steps.versions.outputs.pyproject }}"
          citation_ver  = "${{ steps.versions.outputs.citation }}"
          latest_tag    = "${{ steps.tag.outputs.tag }}".lstrip("v")

          ok = True

          # --- 1. version in pyproject.toml be strictly greater than latest tag ---
          if not latest_tag:
              print("No existing tags found, skipping tag comparison.")
          else:
              current = Version(pyproject_ver)
              latest  = Version(latest_tag)
              print(f"Latest tag: {latest}")
              if current <= latest:
                  print(f"::error::Version in pyproject.toml (ground truth) {current} is not strictly greater than latest tag {latest}. Please bump the version in pyrpoject.toml.")
                  ok = False
              else:
                  print(f"OK: pyproject.toml (ground truth): {current} > {latest}")

          # --- 2. pyproject.toml and CITATION.cff must agree ---
          if pyproject_ver != citation_ver:
              print(f"::error::Version mismatch: pyproject.toml (ground truth) has {pyproject_ver} but CITATION.cff has {citation_ver}. Please make them match.")
              ok = False
          else:
              print(f"OK: pyproject.toml and CITATION.cff both at {pyproject_ver}")

          sys.exit(0 if ok else 1)
          EOF