class VulkanTools < Formula
  desc "Vulkan utilities and tools"
  homepage "https://github.com/KhronosGroup/Vulkan-Tools"
  url "https://github.com/KhronosGroup/Vulkan-Tools/archive/refs/tags/vulkan-sdk-1.4.341.0.tar.gz"
  sha256 "dc65f1ea97dd0b2155c2281a79e87d27183c0737fb96377744091a3c8460ae1e"
  license "Apache-2.0"
  head "https://github.com/KhronosGroup/Vulkan-Tools.git", branch: "main"

  livecheck do
    url :stable
    regex(/^vulkan-sdk[._-]v?(\d+(?:\.\d+)+)$/i)
  end

  bottle do
    sha256                               arm64_tahoe:   "ffb31e96eb4dc43c6f9f73840414463bd4efe9dda9b968f963bce10fedbe6f0b"
    sha256                               arm64_sequoia: "a85fcd934aec5357f4e7b30e92836c23d3fe0179693f4f1a65e0ace50682be21"
    sha256                               arm64_sonoma:  "b5a4852525168f179c919237923f3f1b63634d3d0a628ab4d865b8de4ff99a5e"
    sha256 cellar: :any,                 sonoma:        "56e4f7b6c0bdbca461bea3d1f7cfde6d1fbf8fc482c4ee8b6bf6a6153a777c7b"
    sha256 cellar: :any_skip_relocation, arm64_linux:   "d22b81469a824feac0579d9b695fda7b3ac29b498f9bdcbaae02d0b3f0a48757"
    sha256 cellar: :any_skip_relocation, x86_64_linux:  "40c70106f3c6b5986bfaa94093d45dbdc29f00c0a67eb5840c1ed37a5577e394"
  end

  depends_on "cmake" => :build
  depends_on "pkgconf" => :build
  depends_on xcode: :build # for ibtool
  depends_on "glslang"
  depends_on "vulkan-headers"
  depends_on "vulkan-loader"

  on_macos do
    depends_on "molten-vk"
  end

  on_linux do
    depends_on "libx11"
    depends_on "libxcb"
    depends_on "libxkbfile"
    depends_on "libxrandr"
    depends_on "wayland"
    depends_on "wayland-protocols"
  end

  def install
    if OS.mac?
      # account for using already-built MoltenVK instead of the source repo
      inreplace "cube/CMakeLists.txt",
                "${MOLTENVK_DIR}/MoltenVK/icd/MoltenVK_icd.json",
                "${MOLTENVK_DIR}/etc/vulkan/icd.d/MoltenVK_icd.json"
      inreplace buildpath.glob("*/macOS/*/CMakeLists.txt"),
                "${MOLTENVK_DIR}/Package/Release/MoltenVK/dynamic/dylib/macOS/libMoltenVK.dylib",
                "${MOLTENVK_DIR}/lib/libMoltenVK.dylib"
    end

    args = [
      "-DBUILD_ICD=ON",
      "-DBUILD_CUBE=ON",
      "-DBUILD_VULKANINFO=ON",
      "-DINSTALL_ICD=OFF", # we will manually place it in a nonconflicting location
      "-DGLSLANG_INSTALL_DIR=#{Formula["glslang"].opt_prefix}",
      "-DVULKAN_HEADERS_INSTALL_DIR=#{Formula["vulkan-headers"].opt_prefix}",
      "-DVULKAN_LOADER_INSTALL_DIR=#{Formula["vulkan-loader"].opt_prefix}",
      "-DCMAKE_INSTALL_RPATH=#{rpath(target: Formula["vulkan-loader"].opt_lib)}",
    ]
    args += if OS.mac?
      ["-DMOLTENVK_REPO_ROOT=#{Formula["molten-vk"].opt_prefix}"]
    else
      [
        "-DBUILD_WSI_DIRECTFB_SUPPORT=OFF",
        "-DBUILD_WSI_WAYLAND_SUPPORT=ON",
        "-DBUILD_WSI_XCB_SUPPORT=ON",
        "-DBUILD_WSI_XLIB_SUPPORT=ON",
      ]
    end
    system "cmake", "-S", ".", "-B", "build", *args, *std_cmake_args
    system "cmake", "--build", "build"
    system "cmake", "--install", "build"

    (lib/"mock_icd").install (buildpath/"build/icd/VkICD_mock_icd.json").realpath,
                             shared_library("build/icd/libVkICD_mock_icd")

    return unless OS.mac?

    targets = [
      Formula["molten-vk"].opt_lib/shared_library("libMoltenVK"),
      Formula["vulkan-loader"].opt_lib/shared_library("libvulkan", Formula["vulkan-loader"].version.to_s),
    ]
    prefix.glob("cube/*.app/Contents/Frameworks").each do |framework_dir|
      ln_sf targets, framework_dir, verbose: true
    end

    (bin/"vkcube").write_env_script "/usr/bin/open", "-a #{prefix}/cube/vkcube.app", {}
    (bin/"vkcubepp").write_env_script "/usr/bin/open", "-a #{prefix}/cube/vkcubepp.app", {}
  end

  def caveats
    <<~EOS
      The mock ICD files have been installed in
        #{opt_lib}/mock_icd
      You can use them with the Vulkan Loader by setting
        export VK_ICD_FILENAMES=#{opt_lib}/mock_icd/VkICD_mock_icd.json
    EOS
  end

  test do
    with_env(VK_ICD_FILENAMES: lib/"mock_icd/VkICD_mock_icd.json") do
      assert_match "Vulkan Mock Device", shell_output("#{bin}/vulkaninfo --summary")
    end

    return if !OS.mac? || (Hardware::CPU.intel? && ENV["HOMEBREW_GITHUB_ACTIONS"])

    with_env(XDG_DATA_DIRS: testpath) do
      assert_match "DRIVER_ID_MOLTENVK", shell_output("#{bin}/vulkaninfo --summary")
    end
  end
end