action.yml

name: 'Set Version from Branch'
description: 'Sets VERSION environment variable from the current branch name'

runs:
  using: composite
  steps:
    - name: Set version from branch name
      shell: bash
      run: |
        # GITHUB_HEAD_REF contains the source branch for PRs (e.g., "v1.2.5"), but is empty for pushes
        # GITHUB_REF_NAME contains the merge ref for PRs (e.g., "1/merge"), but the branch name for pushes
        # Prefer GITHUB_HEAD_REF when available to get the actual branch name
        if [ -n "$GITHUB_HEAD_REF" ]; then
          BRANCH_NAME="$GITHUB_HEAD_REF"
        else
          BRANCH_NAME="$GITHUB_REF_NAME"
        fi
        # Strip leading 'v' if present
        VERSION="${BRANCH_NAME#v}"

        # Get version from package.json
        PACKAGE_VERSION=$(node -p "require('./package.json').version")

        # Verify versions match
        if [ "$VERSION" != "$PACKAGE_VERSION" ]; then
          echo "Error: Version mismatch!"
          echo "  Branch version: $VERSION"
          echo "  package.json version: $PACKAGE_VERSION"
          echo "Please ensure the branch name matches the version in package.json"
          exit 1
        fi

        echo "VERSION=$VERSION" >> $GITHUB_ENV
        echo "Using version: $VERSION (from branch: $BRANCH_NAME)"