class Mesa < Formula
  include Language::Python::Virtualenv
  desc "Graphics Library"
  homepage "https://www.mesa3d.org/"
  url "https://mesa.freedesktop.org/archive/mesa-18.2.3.tar.xz"
  sha256 "e2bf83c17e1abdecb1ee81af22652e27e9aa38f963e95e60f34275cc0376304f"
  bottle do
    sha256 "80348f778a9e90548084f7970a633fa26d25eb1b4ca3b298b741ae6c6203bd1a" => :mojave
    sha256 "f050183c77597d5561bbc663d8f0124769005bc6f879e80f7ffcfad8c5f2ad38" => :high_sierra
    sha256 "cafd1cfeced20001aa26800bcb2bbb58339f81ba5744aff52eca6ddf74de5d45" => :sierra
  end

  head do
    depends_on "gettext"
    url "https://gitlab.freedesktop.org/mesa/mesa.git"
  end

  depends_on "meson-internal" => :build
  depends_on "ninja" => :build
  depends_on "pkg-config" => :build
  depends_on "python@2" => :build
  depends_on "freeglut" => :test
  depends_on "expat"
  depends_on :x11

  resource "Mako" do
    url "https://files.pythonhosted.org/packages/eb/f3/67579bb486517c0d49547f9697e36582cd19dafb5df9e687ed8e22de57fa/Mako-1.0.7.tar.gz"
    sha256 "4e02fde57bd4abb5ec400181e4c314f56ac3e49ba4fb8b0d50bba18cb27d25ae"
  end

  resource "gears.c" do
    url "https://www.opengl.org/archives/resources/code/samples/glut_examples/mesademos/gears.c"
    sha256 "7df9d8cda1af9d0a1f64cc028df7556705d98471fdf3d0830282d4dcfb7a78cc"
  end

  def install
    ENV.prepend_create_path "PYTHONPATH", buildpath/"vendor/lib/python2.7/site-packages"

    resource("Mako").stage do
      system "python", *Language::Python.setup_install_args(buildpath/"vendor")
    end

    resource("gears.c").stage(pkgshare.to_s)

    mkdir "build" do
      system "meson", "--prefix=#{prefix}", "-D buildtype=plain", "-D b_ndebug=true", ".."
      system "ninja"
      system "ninja", "install"
    end
  end

  test do
    system ENV.cc, "#{pkgshare}/gears.c", "-o", "gears", "-L#{lib}", "-I#{Formula["freeglut"].opt_include}", "-L#{Formula["freeglut"].opt_lib}", "-lgl", "-lglut"
  end
end