class GobjectIntrospection < Formula
  desc "Generate introspection data for GObject libraries"
  homepage "https://live.gnome.org/GObjectIntrospection"
  url "https://download.gnome.org/sources/gobject-introspection/1.56/gobject-introspection-1.56.0.tar.xz"
  sha256 "0d7059fad7aa5ec50d9678aea4ea139acab23737e9cf9ca0d86c615cecbaa0f8"

  bottle do
    sha256 "bbaedc361807bb187116ca8f5592d01de87407d60d868d097118d2bb635bf76c" => :high_sierra
    sha256 "b94d571b00bc21c518c9657b224ecf3d6776c5c190e76d7a5dd8bd10a66164d6" => :sierra
    sha256 "ea7658ae17f9662cdecc3d5251801e027173e17333c7e74570006faf7a6f84e5" => :el_capitan
  end

  depends_on "pkg-config"
  depends_on "glib"
  depends_on "cairo"
  depends_on "libffi"
  depends_on "python@2" if MacOS.version <= :mavericks

  resource "tutorial" do
    url "https://gist.github.com/7a0023656ccfe309337a.git",
        :revision => "499ac89f8a9ad17d250e907f74912159ea216416"
  end

  def install
    ENV["GI_SCANNER_DISABLE_CACHE"] = "true"
    inreplace "giscanner/transformer.py", "/usr/share", "#{HOMEBREW_PREFIX}/share"
    inreplace "configure" do |s|
      s.change_make_var! "GOBJECT_INTROSPECTION_LIBDIR", "#{HOMEBREW_PREFIX}/lib"
    end

    python = if MacOS.version >= :yosemite
      "/usr/bin/python2.7"
    else
      Formula["python@2"].opt_bin/"python2.7"
    end

    system "./configure", "--disable-dependency-tracking",
                          "--prefix=#{prefix}",
                          "--with-python=#{python}"
    system "make"
    system "make", "install"
  end

  test do
    ENV.prepend_path "PKG_CONFIG_PATH", Formula["libffi"].opt_lib/"pkgconfig"
    resource("tutorial").stage testpath
    system "make"
    assert_predicate testpath/"Tut-0.1.typelib", :exist?
  end
end