class Vapoursynth < Formula
  include Language::Python::Virtualenv

  desc "Video processing framework with simplicity in mind"
  homepage "http://www.vapoursynth.com"
  url "https://github.com/vapoursynth/vapoursynth/archive/R37.tar.gz"
  sha256 "25fee086442f07f8b6caf1508c18e6a694d52e125eec5959f89570990e6070bc"
  head "https://github.com/vapoursynth/vapoursynth.git"

  bottle do
    sha256 "1b7b7b169cf3b275c4189f0fe30b0270874253d7fc1d9c299b45941fedead3cd" => :sierra
    sha256 "b976b0a202f2174d9428884ed9e1b4b608cba94585686f27f7dfbe39a5322efd" => :el_capitan
  end

  depends_on "autoconf" => :build
  depends_on "automake" => :build
  depends_on "libtool" => :build
  depends_on "pkg-config" => :build
  depends_on "yasm" => :build

  depends_on "libass"
  depends_on :macos => :el_capitan # due to zimg dependency
  depends_on :python3
  depends_on "tesseract"
  depends_on "zimg"

  resource "Cython" do
    url "https://files.pythonhosted.org/packages/2f/ae/0bb6ca970b949d97ca622641532d4a26395322172adaf645149ebef664eb/Cython-0.25.1.tar.gz"
    sha256 "e0941455769335ec5afb17dee36dc3833b7edc2ae20a8ed5806c58215e4b6669"
  end

  def install
    venv = virtualenv_create(buildpath/"cython", "python3")
    venv.pip_install "Cython"
    system "./autogen.sh"
    system "./configure", "--prefix=#{prefix}",
                          "--with-cython=#{buildpath}/cython/bin/cython"
    system "make", "install"
  end

  test do
    py3 = Language::Python.major_minor_version "python3"
    ENV.prepend_path "PYTHONPATH", lib/"python#{py3}/site-packages"
    system "python3", "-c", "import vapoursynth"
    system bin/"vspipe", "--version"
  end
end