class GlabelsQt < Formula
  desc "gLabels Label Designer (Qt/C++) — Seth's packaging fork"
  homepage "https://glabels.org"
  url "https://git.sethpc.xyz/Seth/sethLabels.git",
      tag:      "3.99-master618-seth1",
      revision: "2108e2cf1566cbfa120c12acb458a0dc498f1e79" # pragma: allowlist secret
  license "GPL-3.0-only"
  head "https://git.sethpc.xyz/Seth/sethLabels.git", branch: "main"

  depends_on "cmake"   => :build
  depends_on "ninja"   => :build
  depends_on "pkgconf" => :build
  depends_on "qt"
  depends_on "zlib"
  depends_on "qrencode" => :recommended  # optional barcode backend
  depends_on "zint"     => :recommended  # optional barcode backend

  def install
    system "cmake", "-S", ".", "-B", "build",
           "-G", "Ninja",
           "-DCMAKE_BUILD_TYPE=Release",
           *std_cmake_args
    system "cmake", "--build", "build"
    system "cmake", "--install", "build"

    # Build a thin .app wrapper for Launchpad/Spotlight integration.
    # Upstream's CMakeLists doesn't set MACOSX_BUNDLE, so we synthesize one.
    # The launcher script execs the real CLI binary in #{bin}/glabels-qt.
    on_macos do
      app_bundle = prefix/"glabels-qt.app"
      contents = app_bundle/"Contents"
      macos_dir = contents/"MacOS"
      resources = contents/"Resources"
      macos_dir.mkpath
      resources.mkpath

      # Launcher script: 2-line shell that execs the real binary with all args.
      launcher = macos_dir/"glabels-qt"
      launcher.write <<~SH
        #!/bin/bash
        exec "#{bin}/glabels-qt" "$@"
      SH
      launcher.chmod 0755

      # Info.plist: minimum keys for Launchpad/Spotlight to recognize the bundle.
      (contents/"Info.plist").write <<~PLIST
        <?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
        <plist version="1.0">
        <dict>
          <key>CFBundleName</key><string>gLabels</string>
          <key>CFBundleDisplayName</key><string>gLabels</string>
          <key>CFBundleIdentifier</key><string>org.glabels.glabels-qt</string>
          <key>CFBundleExecutable</key><string>glabels-qt</string>
          <key>CFBundleVersion</key><string>#{version}</string>
          <key>CFBundleShortVersionString</key><string>#{version}</string>
          <key>CFBundlePackageType</key><string>APPL</string>
          <key>CFBundleIconFile</key><string>glabels-qt.icns</string>
          <key>LSMinimumSystemVersion</key><string>10.13</string>
          <key>NSHighResolutionCapable</key><true/>
        </dict>
        </plist>
      PLIST

      # Convert upstream PNG icon to .icns using sips (macOS built-in).
      # Upstream installs hicolor PNGs at share/icons/hicolor/<size>/apps/glabels.png.
      # Pick the largest available; fall back gracefully if none found.
      candidate_pngs = Dir[share/"icons/hicolor/*/apps/glabels.png"].sort_by do |path|
        size = path[%r{hicolor/(\d+)x\d+/}, 1].to_i
        -size  # largest first
      end
      if candidate_pngs.first
        system "sips", "-s", "format", "icns",
               candidate_pngs.first,
               "--out", resources/"glabels-qt.icns"
      else
        opoo "No upstream PNG icon found; .app will use generic Mac icon."
      end
    end
  end

  def caveats
    on_macos do
      <<~CAVEATS
        gLabels has been installed as a CLI binary at:
          #{HOMEBREW_PREFIX}/bin/glabels-qt
          #{HOMEBREW_PREFIX}/bin/glabels-batch-qt

        For Launchpad / Spotlight / Dock integration, copy the .app bundle
        to /Applications:
          cp -R #{prefix}/glabels-qt.app /Applications/

        (Re-run that command after each `brew upgrade glabels-qt` to refresh.)
      CAVEATS
    end
  end

  test do
    assert_match "gLabels", shell_output("#{bin}/glabels-batch-qt --version")
  end
end