class Webp < Formula
  desc "Image format providing lossless and lossy compression for web images"
  homepage "https://developers.google.com/speed/webp/"
  url "https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.0.1.tar.gz"
  sha256 "8c744a5422dbffa0d1f92e90b34186fb8ed44db93fbacb55abd751ac8808d922"

  bottle do
    cellar :any
    sha256 "2c4121390441467ced55577aa10552ac3a5fbfe8deff280d487a61ff7bb2d3f8" => :mojave
    sha256 "516715778a85358459a7214b2d1bd64185642d8a3e974cdfbc2f122e24459b73" => :sierra
  end

  head do
    url "https://chromium.googlesource.com/webm/libwebp.git"
    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
  end

  depends_on "jpeg"
  depends_on "libpng"

  def install
    system "./autogen.sh" if build.head?
    system "./configure", "--prefix=#{prefix}",
                          "--disable-dependency-tracking",
                          "--disable-gif",
                          "--disable-gl",
                          "--enable-libwebpdecoder",
                          "--enable-libwebpdemux",
                          "--enable-libwebpmux"
    system "make", "install"
  end

  test do
    system bin/"cwebp", test_fixtures("test.png"), "-o", "webp_test.png"
    system bin/"dwebp", "webp_test.png", "-o", "webp_test.webp"
    assert_predicate testpath/"webp_test.webp", :exist?
  end
end