name: Build Homebrew package
on:
  push:
    paths:
      - .github/workflows/build-pkg.yml
      - package/scripts
  release:
    types:
      - published

jobs:
  build:
    runs-on: macos-12
    env:
      IDENTIFIER: sh.brew.Homebrew
      TMP_PATH: /tmp/brew
      MIN_OS: '11.0'
    steps:
      - uses: actions/checkout@v3
        with:
          path: brew
          fetch-depth: 0
      - name: Version name
        id: print-version
        run: |
          echo "version=$(git -C brew describe --tags --always)" > $GITHUB_OUTPUT
      - name: Build package
        run: |
         pkgbuild --root brew \
                  --scripts brew/package/scripts \
                  --install-location "$TMP_PATH" \
                  --identifier "$IDENTIFIER" \
                  --min-os-version "$MIN_OS" \
                  --filter .DS_Store \
                  --version ${{ steps.print-version.outputs.version }} \
                  Homebrew-${{ steps.print-version.outputs.version }}.pkg
      - uses: actions/upload-artifact@v3
        with:
          name: Homebrew ${{ steps.print-version.outputs.version }}
          path: Homebrew-${{ steps.print-version.outputs.version }}.pkg