class LibbitcoinClient < Formula
  desc "Bitcoin Client Query Library"
  homepage "https://github.com/libbitcoin/libbitcoin-client"
  url "https://github.com/libbitcoin/libbitcoin-client/archive/v3.5.0.tar.gz"
  sha256 "bafa26647f334ecad04fc4bbef507a1954d7e0682f07bd38b90ab66dba5fe0d2"
  revision 1

  bottle do
    cellar :any
    sha256 "6396b1cd3bf1f9a017f90b90831cf2f7d9428ddce2792b5a788e3c8dfcde12a7" => :high_sierra
    sha256 "cbddbdfcca8192a17d872c2c88ffe91a3f57c273b5f5a40b5e6bca1472abd0ef" => :sierra
    sha256 "ea910a747fab11114454b5a4b646dfc8c7a33dab3ce8ec39f63c9c59344dc66d" => :el_capitan
  end

  depends_on "autoconf" => :build
  depends_on "automake" => :build
  depends_on "libtool" => :build
  depends_on "pkg-config" => :build
  depends_on "libbitcoin-protocol"

  def install
    ENV.prepend_path "PKG_CONFIG_PATH", Formula["libbitcoin"].opt_libexec/"lib/pkgconfig"

    system "./autogen.sh"
    system "./configure", "--disable-dependency-tracking",
                          "--disable-silent-rules",
                          "--prefix=#{prefix}"
    system "make", "install"
  end

  test do
    (testpath/"test.cpp").write <<~EOS
      #include <bitcoin/client.hpp>
      class stream_fixture
        : public libbitcoin::client::stream
      {
      public:
        libbitcoin::data_stack out;

        virtual int32_t refresh() override
        {
          return 0;
        }

        virtual bool read(stream& stream) override
        {
          return false;
        }

        virtual bool write(const libbitcoin::data_stack& data) override
        {
          out = data;
          return true;
        }
      };
      static std::string to_string(libbitcoin::data_slice data)
      {
        return std::string(data.begin(), data.end()) + "\0";
      }
      static void remove_optional_delimiter(libbitcoin::data_stack& stack)
      {
        if (!stack.empty() && stack.front().empty())
          stack.erase(stack.begin());
      }
      static const uint32_t test_height = 0x12345678;
      static const char address_satoshi[] = "1PeChFbhxDD9NLbU21DfD55aQBC4ZTR3tE";
      #define PROXY_TEST_SETUP \
        static const uint32_t retries = 0; \
        static const uint32_t timeout_ms = 2000; \
        static const auto on_error = [](const libbitcoin::code&) {}; \
        static const auto on_unknown = [](const std::string&) {}; \
        stream_fixture capture; \
        libbitcoin::client::proxy proxy(capture, on_unknown, timeout_ms, retries)
      #define HANDLE_ROUTING_FRAMES(stack) \
        remove_optional_delimiter(stack);
      int main() {
        PROXY_TEST_SETUP;

        const auto on_reply = [](const libbitcoin::chain::history::list&) {};
        proxy.blockchain_fetch_history3(on_error, on_reply, libbitcoin::wallet::payment_address(address_satoshi), test_height);

        HANDLE_ROUTING_FRAMES(capture.out);
        assert(capture.out.size() == 3u);
        assert(to_string(capture.out[0]) == "blockchain.fetch_history3");
        assert(libbitcoin::encode_base16(capture.out[2]) == "f85beb6356d0813ddb0dbb14230a249fe931a13578563412");
      }
    EOS
    system ENV.cxx, "-std=c++11", "test.cpp",
                    "-I#{libexec}/include",
                    "-lbitcoin", "-lbitcoin-client", "-lboost_system",
                    "-o", "test"
    system "./test"
  end
end