release-check.yml

name: Release Check

on:
  push:
    tags: [ 'v*' ]
  workflow_dispatch:

permissions:
  contents: read

jobs:
  version-check:
    name: tag matches project version
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v4

      - name: Check release version
        run: |
          cmake_version=$(sed -nE 's/^project\(netcode VERSION ([0-9]+\.[0-9]+\.[0-9]+).*/\1/p' CMakeLists.txt)
          header_full=$(sed -nE 's/^#define NETCODE_VERSION_FULL[[:space:]]+"([0-9]+\.[0-9]+\.[0-9]+)".*/\1/p' netcode.h)
          major=$(sed -nE 's/^#define NETCODE_VERSION_MAJOR[[:space:]]+([0-9]+).*/\1/p' netcode.h)
          minor=$(sed -nE 's/^#define NETCODE_VERSION_MINOR[[:space:]]+([0-9]+).*/\1/p' netcode.h)
          patch=$(sed -nE 's/^#define NETCODE_VERSION_PATCH[[:space:]]+([0-9]+).*/\1/p' netcode.h)
          if [ -z "$cmake_version" ] || [ -z "$header_full" ] || [ -z "$major" ] || [ -z "$minor" ] || [ -z "$patch" ]; then
            echo "::error::Could not extract versions (CMakeLists.txt: '$cmake_version', NETCODE_VERSION_FULL: '$header_full', MAJOR/MINOR/PATCH: '$major.$minor.$patch')"
            exit 1
          fi
          echo "CMakeLists.txt project version:  $cmake_version"
          echo "netcode.h NETCODE_VERSION_FULL:  $header_full"
          echo "netcode.h MAJOR.MINOR.PATCH:     $major.$minor.$patch"
          if [ "$header_full" != "$major.$minor.$patch" ]; then
            echo "::error::NETCODE_VERSION_FULL ($header_full) does not match NETCODE_VERSION_MAJOR/MINOR/PATCH ($major.$minor.$patch) in netcode.h"
            exit 1
          fi
          if [ "$cmake_version" != "$header_full" ]; then
            echo "::error::project(netcode VERSION $cmake_version) in CMakeLists.txt does not match NETCODE_VERSION_FULL ($header_full) in netcode.h"
            exit 1
          fi
          case "$GITHUB_REF" in
            refs/tags/*)
              tag_version="${GITHUB_REF_NAME#v}"
              echo "Release tag version:             $tag_version"
              if [ "$tag_version" != "$cmake_version" ]; then
                echo "::error::Tag $GITHUB_REF_NAME does not match version $cmake_version in CMakeLists.txt and netcode.h — bump both as part of the release."
                exit 1
              fi
              ;;
            *)
              echo "Not a tag build, nothing more to check."
              ;;
          esac