class Gstreamer < Formula
  desc "Development framework for multimedia applications"
  homepage "https://gstreamer.freedesktop.org/"
  url "https://gstreamer.freedesktop.org/src/gstreamer/gstreamer-1.16.2.tar.xz"
  sha256 "e3f044246783fd685439647373fa13ba14f7ab0b346eadd06437092f8419e94e"

  bottle do
    sha256 "3473eef6aadd51a378f722c08a399922c4b401f38d8d5bffe7e2cb0ba845f919" => :catalina
    sha256 "6427cd64ac1c541d35fc57f869dd1290e57aab8a2a9f5589b79f6e078e4432d5" => :mojave
    sha256 "b1a6cbfbac2bb152ce023fbe283ef38ec371ceccff48ae1545cdeac1a36933ba" => :high_sierra
  end

  head do
    url "https://anongit.freedesktop.org/git/gstreamer/gstreamer.git"

    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
  end

  depends_on "bison" => :build
  depends_on "gobject-introspection" => :build
  depends_on "pkg-config" => :build
  depends_on "gettext"
  depends_on "glib"

  def install
    args = %W[
      --prefix=#{prefix}
      --disable-debug
      --disable-dependency-tracking
      --disable-gtk-doc
      --enable-introspection=yes
    ]

    if build.head?
      ENV["NOCONFIGURE"] = "yes"
      system "./autogen.sh"

      # Ban trying to chown to root.
      # https://bugzilla.gnome.org/show_bug.cgi?id=750367
      args << "--with-ptp-helper-permissions=none"
    end

    # Look for plugins in HOMEBREW_PREFIX/lib/gstreamer-1.0 instead of
    # HOMEBREW_PREFIX/Cellar/gstreamer/1.0/lib/gstreamer-1.0, so we'll find
    # plugins installed by other packages without setting GST_PLUGIN_PATH in
    # the environment.
    inreplace "configure", 'PLUGINDIR="$full_var"',
      "PLUGINDIR=\"#{HOMEBREW_PREFIX}/lib/gstreamer-1.0\""

    system "./configure", *args
    system "make"
    system "make", "install"
  end

  def caveats; <<~EOS
    Consider also installing gst-plugins-base and gst-plugins-good.

    The gst-plugins-* packages contain gstreamer-video-1.0, gstreamer-audio-1.0,
    and other components needed by most gstreamer applications.
  EOS
  end

  test do
    system bin/"gst-inspect-1.0"
  end
end