class VapoursynthSub < Formula
  desc "VapourSynth filters - Subtitling filter"
  homepage "http://www.vapoursynth.com"
  url "https://github.com/vapoursynth/vapoursynth/archive/R48.tar.gz"
  sha256 "3e98d134e16af894cf7040e4383e4ef753cafede34d5d77c42a2bb89790c50a8"
  head "https://github.com/vapoursynth/vapoursynth.git"

  bottle do
    cellar :any
    sha256 "9e4629c90fa4d444cb4fd21b62ca9455378551e88f74312f153a6d8da5e93e92" => :catalina
    sha256 "4d9002ee7df4d4e652f4712f23b949c731ae15e26c266610c9ab46716ca02d59" => :mojave
    sha256 "ce15ff4951abbb44aabf88da25439eaf6d581cede6c22b548780433c0ff8c074" => :high_sierra
  end

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

  depends_on "ffmpeg"
  depends_on "libass"
  depends_on "vapoursynth"

  def install
    system "./autogen.sh"
    inreplace "Makefile.in", "pkglibdir = $(libdir)", "pkglibdir = $(exec_prefix)"
    system "./configure", "--prefix=#{prefix}",
                          "--disable-core",
                          "--disable-vsscript",
                          "--disable-plugins",
                          "--enable-subtext"
    system "make", "install"
    rm prefix/"vapoursynth/libsubtext.la"
  end

  def post_install
    (HOMEBREW_PREFIX/"lib/vapoursynth").mkpath
    (HOMEBREW_PREFIX/"lib/vapoursynth").install_symlink prefix/"vapoursynth/libsubtext.dylib" => "libsubtext.dylib"
  end

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