class Mesa < Formula
  include Language::Python::Virtualenv
  desc "Graphics Library"
  homepage "https://www.mesa3d.org/"
  url "https://mesa.freedesktop.org/archive/mesa-18.3.4.tar.xz"
  sha256 "32314da4365d37f80d84f599bd9625b00161c273c39600ba63b45002d500bb07"
  head "https://gitlab.freedesktop.org/mesa/mesa.git"

  bottle do
    sha256 "5c7193422a481be349e23c7209dff8076db66af5bcfa4a90ed3c52074a4bafa9" => :mojave
    sha256 "eac4afd7cad4210ab05edae9b8ed61e6bbb6408ea90aa8ce685046c101062be3" => :high_sierra
    sha256 "debcf39e35a7bc2ebd3cf32711fe541c6f3998421593453e29aead7748274c7a" => :sierra
  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 "gettext"
  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