class Grokj2k < Formula
  desc "JPEG 2000 Library"
  homepage "https://github.com/GrokImageCompression/grok"
  url "https://github.com/GrokImageCompression/grok/archive/v10.0.4.tar.gz"
  sha256 "8b9e3f1f2dc9f8475221aa7c94fbdf08898ae45a8e8453aed9f0594dd7ba272f"
  license "AGPL-3.0-or-later"
  head "https://github.com/GrokImageCompression/grok.git", branch: "master"

  livecheck do
    url :stable
    regex(/^v?(\d+(?:\.\d+)+)$/i)
  end

  bottle do
    sha256 cellar: :any,                 arm64_ventura:  "65a4253b600244d5139aae29f4a439f314e057df2016fd8c0051ddd12e377438"
    sha256 cellar: :any,                 arm64_monterey: "e5a0048b4a441f37aa43f8e0f58cd3e130a16f7034ac1be02031bbde7ff8b311"
    sha256 cellar: :any,                 arm64_big_sur:  "b9848a27bb829c55566579b3884ca443ec9dc134204d6046eb593b2582925e4f"
    sha256 cellar: :any,                 ventura:        "f660ea93486302ba50ba313a83ba92456a6c212b69a964cd153e5628c31cd29b"
    sha256 cellar: :any,                 monterey:       "e5f7760e2d9c344f0132093fe71702bc0fd9ced345a7f12f005c60fe39fdf298"
    sha256 cellar: :any,                 big_sur:        "d47bb02be03404ce7440f23712cd5044a4fda722441e914c36bcb19bc61a10fb"
    sha256 cellar: :any,                 catalina:       "8d2d9796e8d9a52bee653f6f1f494c59900f5f89c1eadb88d2172400dbaca455"
    sha256 cellar: :any_skip_relocation, x86_64_linux:   "03e58dff0870d9b0f58412b910cbccaf4f750bc19d679ddbb3a8f9a644760137"
  end

  depends_on "cmake" => :build
  depends_on "doxygen" => :build
  depends_on "pkg-config" => :build
  depends_on "exiftool"
  depends_on "jpeg-turbo"
  depends_on "libpng"
  depends_on "libtiff"
  depends_on "little-cms2"
  depends_on macos: :catalina

  uses_from_macos "perl"
  uses_from_macos "zlib"

  on_macos do
    depends_on "llvm" => :build if DevelopmentTools.clang_build_version <= 1200
  end

  fails_with :clang do
    build 1200
    cause "Requires C++20"
  end

  # https://github.com/GrokImageCompression/grok/blob/master/INSTALL.md#compilers
  fails_with :gcc do
    version "9"
    cause "GNU compiler version must be at least 10.0"
  end

  resource "homebrew-test_image" do
    url "https://raw.githubusercontent.com/GrokImageCompression/input_image_test_suite/173de0ae73371751f857d16fdaf2c3301e54a3a6/exif-samples/tiff/Tless0.tiff"
    sha256 "32f6aab90dc2d284a83040debe379e01333107b83a98c1aa2e6dabf56790b48a"
  end

  def install
    ENV.llvm_clang if OS.mac? && (DevelopmentTools.clang_build_version <= 1200)

    # Fix: ExifTool Perl module not found
    ENV.prepend_path "PERL5LIB", Formula["exiftool"].opt_libexec/"lib"

    # Ensure we use Homebrew little-cms2
    %w[liblcms2 libpng libtiff libz].each { |l| (buildpath/"thirdparty"/l).rmtree }
    inreplace "thirdparty/CMakeLists.txt" do |s|
      s.gsub! "add_subdirectory(liblcms2)", ""
      s.gsub! %r{(set\(LCMS_INCLUDE_DIRNAME) \$\{GROK_SOURCE_DIR\}/thirdparty/liblcms2/include},
              "\\1 #{Formula["little-cms2"].opt_include}"
    end

    perl = DevelopmentTools.locate("perl")
    perl_archlib = Utils.safe_popen_read(perl.to_s, "-MConfig", "-e", "print $Config{archlib}")
    args = %W[
      -DGRK_BUILD_DOC=ON
      -DGRK_BUILD_LIBPNG=OFF
      -DGRK_BUILD_LIBTIFF=OFF
      -DPERL_EXECUTABLE=#{perl}
    ]

    if OS.mac?
      # Workaround Perl 5.18 issues with C++11: pad.h:323:17: error: invalid suffix on literal
      ENV.append "CXXFLAGS", "-Wno-reserved-user-defined-literal" if MacOS.version <= :catalina
      # Help CMake find Perl libraries, which are needed to enable ExifTool feature.
      # Without this, CMake outputs: Could NOT find PerlLibs (missing: PERL_INCLUDE_PATH)
      args << "-DPERL_INCLUDE_PATH=#{MacOS.sdk_path_if_needed}/#{perl_archlib}/CORE"
    else
      # Fix linkage error due to RPATH missing directory with libperl.so
      ENV.append "LDFLAGS", "-Wl,-rpath,#{perl_archlib}/CORE"
    end

    system "cmake", "-S", ".", "-B", "build", *std_cmake_args, *args
    system "cmake", "--build", "build"
    system "cmake", "--install", "build"
    include.install_symlink "grok-#{version.major_minor}" => "grok"

    bin.env_script_all_files libexec, PERL5LIB: ENV["PERL5LIB"]
  end

  test do
    (testpath/"test.c").write <<~EOS
      #include <grok/grok.h>

      int main () {
        grk_image_comp cmptparm;
        const GRK_COLOR_SPACE color_space = GRK_CLRSPC_GRAY;

        grk_image *image;
        image = grk_image_new(1, &cmptparm, color_space);

        grk_object_unref(&image->obj);
        return 0;
      }
    EOS
    system ENV.cc, "test.c", "-I#{include}", "-L#{lib}", "-lgrokj2k", "-o", "test"
    system "./test"

    # Test Exif metadata retrieval
    resource("homebrew-test_image").stage do
      system bin/"grk_compress", "-in_file", "Tless0.tiff",
                                 "-out_file", "test.jp2", "-out_fmt", "jp2",
                                 "-transfer_exif_tags"
      output = shell_output("#{Formula["exiftool"].bin}/exiftool test.jp2")

      [
        "Exif Byte Order                 : Big-endian (Motorola, MM)",
        "Orientation                     : Horizontal (normal)",
        "X Resolution                    : 72",
        "Y Resolution                    : 72",
        "Resolution Unit                 : inches",
        "Y Cb Cr Positioning             : Centered",
      ].each do |data|
        assert_match data, output
      end
    end
  end
end