class Graphicsmagick < Formula
  desc "Image processing tools collection"
  homepage "http://www.graphicsmagick.org/"
  url "https://downloads.sourceforge.net/project/graphicsmagick/graphicsmagick/1.3.28/GraphicsMagick-1.3.28.tar.xz"
  sha256 "942a68a9a8a5af6f682b896fd4f0ad617d8b49907e474acfe59549956bcc994a"
  head "http://hg.code.sf.net/p/graphicsmagick/code", :using => :hg

  bottle do
    sha256 "999255f3842b6184ec9fd9f8398611074b6642c25d0a3a707244f9c4f4c9e2c6" => :high_sierra
    sha256 "f170545068ad94562775d481b21988c5b3692b5c4a252e7f2f7cc07ab8537a11" => :sierra
    sha256 "9baa3988debf4eb1234fbb49e5bfc542bfd9db3dc6e8d155eec2b45705ac41e4" => :el_capitan
  end

  option "without-magick-plus-plus", "disable build/install of Magick++"
  option "without-svg", "Compile without svg support"
  option "with-perl", "Build PerlMagick; provides the Graphics::Magick module"

  depends_on "pkg-config" => :build
  depends_on "libtool" => :run
  depends_on "jpeg" => :recommended
  depends_on "libpng" => :recommended
  depends_on "libtiff" => :recommended
  depends_on "freetype" => :recommended
  depends_on "little-cms2" => :optional
  depends_on "jasper" => :optional
  depends_on "libwmf" => :optional
  depends_on "ghostscript" => :optional
  depends_on "webp" => :optional
  depends_on :x11 => :optional

  skip_clean :la

  def install
    args = %W[
      --prefix=#{prefix}
      --disable-dependency-tracking
      --enable-shared
      --disable-static
      --with-modules
      --without-lzma
      --disable-openmp
      --with-quantum-depth=16
    ]

    args << "--without-gslib" if build.without? "ghostscript"
    args << "--with-gs-font-dir=#{HOMEBREW_PREFIX}/share/ghostscript/fonts" if build.without? "ghostscript"
    args << "--without-magick-plus-plus" if build.without? "magick-plus-plus"
    args << "--with-perl" if build.with? "perl"
    args << "--with-webp=yes" if build.with? "webp"
    args << "--without-x" if build.without? "x11"
    args << "--without-ttf" if build.without? "freetype"
    args << "--without-xml" if build.without? "svg"
    args << "--without-lcms2" if build.without? "little-cms2"

    # versioned stuff in main tree is pointless for us
    inreplace "configure", "${PACKAGE_NAME}-${PACKAGE_VERSION}", "${PACKAGE_NAME}"
    system "./configure", *args
    system "make", "install"
    if build.with? "perl"
      cd "PerlMagick" do
        # Install the module under the GraphicsMagick prefix
        system "perl", "Makefile.PL", "INSTALL_BASE=#{prefix}"
        system "make"
        system "make", "install"
      end
    end
  end

  def caveats
    if build.with? "perl"
      <<~EOS
        The Graphics::Magick perl module has been installed under:

          #{lib}

      EOS
    end
  end

  test do
    fixture = test_fixtures("test.png")
    assert_match "PNG 8x8+0+0", shell_output("#{bin}/gm identify #{fixture}")
  end
end