class CodesignRequirement < Requirement
  include FileUtils
  fatal true

  satisfy(:build_env => false) do
    mktemp do
      cp "/usr/bin/false", "radare2_check"
      quiet_system "/usr/bin/codesign", "-f", "-s", "org.radare.radare2", "--dryrun", "radare2_check"
    end
  end

  def message
    <<-EOS.undent
      org.radare.radare2 identity must be available to build with automated signing.
      See: https://github.com/radare/radare2/blob/master/doc/osx.md
    EOS
  end
end

class Radare2 < Formula
  desc "Reverse engineering framework"
  homepage "http://radare.org"

  stable do
    url "http://www.radare.org/get/radare2-0.10.5.tar.xz"
    sha256 "e534e89b1ddc06b962766fab1d9a8c6957ce1eeac4b6babdd0cd3345c6d14ca5"

    resource "bindings" do
      url "http://www.radare.org/get/radare2-bindings-0.10.5.tar.xz"
      sha256 "04eb9a31e752d393e240a5d2e77f6313f1e5b7ccf7471e6fea2d346781173fb1"
    end

    resource "extras" do
      url "http://www.radare.org/get/radare2-extras-0.10.5.tar.xz"
      sha256 "2dd23a4ab8f787f47b22cdd0df76d7b575a80e9afaf0ee95a553deaaba65e6f6"
    end
  end

  bottle do
    sha256 "9eb9eb34f22803323480de1af7ca57336cda9d51429901772b94d1d223a0d10f" => :el_capitan
    sha256 "9795fb8f8091df0cb505767d6cb9c2f6c7b9f9a0b3d19d99778cf0c86c2bfa46" => :yosemite
    sha256 "faef9e723a152abaf0e1e11dba293a203a1801fd7e2c8420ce59fc83ad5546c7" => :mavericks
  end

  head do
    url "https://github.com/radare/radare2.git"

    resource "bindings" do
      url "https://github.com/radare/radare2-bindings.git"
    end

    resource "extras" do
      url "https://github.com/radare/radare2-extras.git"
    end
  end

  option "with-code-signing", "Codesign executables to provide unprivileged process attachment"

  depends_on "pkg-config" => :build
  depends_on "valabind" => :build
  depends_on "swig" => :build
  depends_on "gobject-introspection" => :build
  depends_on "gmp"
  depends_on "libewf"
  depends_on "libmagic"
  depends_on "lua51" # It seems to latch onto Lua51 rather than Lua. Enquire this upstream.
  depends_on "openssl"
  depends_on "yara"

  depends_on CodesignRequirement if build.with? "code-signing"

  def install
    # Build Radare2 before bindings, otherwise compile = nope.
    system "./configure", "--prefix=#{prefix}", "--with-openssl"
    system "make", "CS_PATCHES=0"
    if build.with? "code-signing"
      # Brew changes the HOME directory which breaks codesign
      home = `eval printf "~$USER"`
      system "make", "HOME=#{home}", "-C", "binr/radare2", "osxsign"
      system "make", "HOME=#{home}", "-C", "binr/radare2", "osx-sign-libs"
    end
    system "make", "install"

    resource("extras").stage do
      ENV.append_path "PATH", bin
      ENV.append_path "PKG_CONFIG_PATH", "#{lib}/pkgconfig"

      system "./configure", "--prefix=#{prefix}"
      system "make", "all"
      system "make", "install"
    end

    resource("bindings").stage do
      ENV.append_path "PATH", bin
      ENV.append_path "PKG_CONFIG_PATH", "#{lib}/pkgconfig"

      # Language versions.
      perl_version = `/usr/bin/perl -e 'printf "%vd", $^V;'`
      lua_version = "5.1"

      # Lazily bind to Python.
      inreplace "do-swig.sh", "VALABINDFLAGS=\"\"", "VALABINDFLAGS=\"--nolibpython\""
      make_binding_args = ["CFLAGS=-undefined dynamic_lookup"]

      # Ensure that plugins and bindings are installed in the correct Cellar
      # paths.
      inreplace "libr/lang/p/Makefile", "R2_PLUGIN_PATH=", "#R2_PLUGIN_PATH="
      inreplace "Makefile", "LUAPKG=", "#LUAPKG="
      inreplace "Makefile", "${DESTDIR}$$_LUADIR", "#{lib}/lua/#{lua_version}"
      make_install_args = %W[
        R2_PLUGIN_PATH=#{lib}/radare2/#{version}
        LUAPKG=lua-#{lua_version}
        PERLPATH=#{lib}/perl5/site_perl/#{perl_version}
        PYTHON_PKGDIR=#{lib}/python2.7/site-packages
        RUBYPATH=#{lib}/ruby/#{RUBY_VERSION}
      ]

      system "./configure", "--prefix=#{prefix}"
      ["lua", "perl", "python"].each do |binding|
        system "make", "-C", binding, *make_binding_args
      end
      system "make"
      system "make", "install", *make_install_args
    end
  end

  test do
    assert_match "radare2 #{version}", shell_output("#{bin}/r2 -version")
  end
end