class CodesignRequirement < Requirement
  fatal true

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

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

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

  stable do
    url "https://radare.mikelloc.com/get/2.2.0/radare2-2.2.0.tar.gz"
    sha256 "f53174d74ee4027ffe301c7948f2f537db633b3014793df1355fc279c1532eab"

    resource "bindings" do
      url "https://radare.mikelloc.com/get/2.2.0/radare2-bindings-2.1.0.tar.gz"
      sha256 "ac0eac49f7a4fd0decbdbce2303e3cb73819c77aebe17d7ca32c795d310ab8ab"
    end

    resource "extras" do
      url "https://radare.mikelloc.com/get/2.2.0/radare2-extras-2.2.0.tar.gz"
      sha256 "6825642d880bc5ce8e780d6947fa7c7b475d546861ef0c86f88e1e10ce599155"
    end
  end

  bottle do
    sha256 "0247b0578d4ee972432ce806d96a5d694601df9d9513e5fd2b54d048038881ed" => :high_sierra
    sha256 "dab32098948b21350de0bfeca358ee36ee18f8ac622451b1d494ffe34cd0d264" => :sierra
    sha256 "13dd6a2c647c9197b6eb6de5fd11099c40d998ae67ee93d4368950ed6bfdbcfb" => :el_capitan
  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 "jansson"
  depends_on "libewf"
  depends_on "libmagic"
  depends_on "lua"
  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", "macossign"
      system "make", "HOME=#{home}", "-C", "binr/radare2", "macos-sign-libs"
    end
    ENV.deparallelize { system "make", "install" }

    # remove leftover symlinks
    # https://github.com/radare/radare2/issues/8688
    rm_f bin/"r2-docker"
    rm_f bin/"r2-indent"

    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 = Formula["lua"].version.to_s.match(/\d\.\d/)

      # 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="
      # fix build, https://github.com/radare/radare2-bindings/pull/168
      inreplace "libr/lang/p/Makefile",
      "CFLAGS+=$(shell pkg-config --cflags r_core)",
      "CFLAGS+=$(shell pkg-config --cflags r_core) -DPREFIX=\\\"${PREFIX}\\\""
      inreplace "Makefile", "LUAPKG=", "#LUAPKG="
      inreplace "Makefile", "${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