// Copyright (c) 2006, 2007 Julio M. Merino Vidal
// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
// Copyright (c) 2009 Boris Schaeling
// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#define BOOST_TEST_MAIN
#define BOOST_TEST_IGNORE_SIGCHLD
#include <boost/test/included/unit_test.hpp>

#include <boost/process/exe_args.hpp>
#include <boost/process/error.hpp>
#include <boost/process/io.hpp>
#include <boost/process/child.hpp>
#include <boost/process/execute.hpp>

#include <system_error>
#include <boost/system/error_code.hpp>
#include <boost/iostreams/device/file_descriptor.hpp>
#include <boost/iostreams/stream.hpp>
#include <boost/asio.hpp>
#include <string>
#include <cstdlib>
#include <iostream>

#if defined(BOOST_WINDOWS_API)
#   include <Windows.h>
typedef boost::asio::windows::stream_handle pipe_end;
#elif defined(BOOST_POSIX_API)
#   include <sys/wait.h>
#   include <unistd.h>
typedef boost::asio::posix::stream_descriptor pipe_end;
#endif



namespace bp = boost::process;
namespace bio = boost::iostreams;

BOOST_AUTO_TEST_CASE(sync_io)
{
    using boost::unit_test::framework::master_test_suite;

    bp::pipe p1;
    bp::pipe p2;

    std::error_code ec;

    auto c = bp::execute(
            master_test_suite().argv[1],
            bp::args+={"test", "--prefix", "abc"},
            bp::std_in <p1,
            bp::std_out>p2,
            ec
     );
     BOOST_REQUIRE(!ec);

     bio::stream<bio::file_descriptor_sink> os(p1.sink());

     os << "hello" << std::endl;

     bio::stream<bio::file_descriptor_source> is(p2.source());

     std::string s;
     is >> s;
     BOOST_CHECK_EQUAL(s, "abchello");
     os << 123 << std::endl;
     is >> s;
     BOOST_CHECK_EQUAL(s, "abc123");
     os << 3.1415 << std::endl;
     is >> s;
     BOOST_CHECK_EQUAL(s, "abc3.1415");

}

//bp::pipe create_async_pipe()
//{
//#if defined(BOOST_WINDOWS_API)
//    std::string name = "\\\\.\\pipe\\boost_process_test_bind_stdin";
//    HANDLE handle1 = CreateNamedPipeA(name.c_str(), PIPE_ACCESS_INBOUND,
//        0, 1, 8192, 8192, 0, NULL);
//    HANDLE handle2 = CreateFileA(name.c_str(), GENERIC_WRITE, 0, NULL,
//        OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
//    return bp::make_pipe(handle1, handle2);
//#elif defined(BOOST_POSIX_API)
//    return bp::create_pipe();
//#endif
//}

struct write_handler
{
    bio::stream<bio::file_descriptor_source> &is_;

    write_handler(bio::stream<bio::file_descriptor_source> &is) : is_(is) {}

    void operator()(const boost::system::error_code &ec, std::size_t size)
    {
        BOOST_REQUIRE(!ec);
        BOOST_REQUIRE_EQUAL(6u, size);
        std::string s;
        is_ >> s;
        BOOST_CHECK_EQUAL(s, "abchello");
    }
};

BOOST_AUTO_TEST_CASE(async_io)
{
    using boost::unit_test::framework::master_test_suite;

    bp::pipe p1 = bp::pipe::create_async();
    bp::pipe p2 ;

    std::error_code ec;
    bp::execute(
        master_test_suite().argv[1],
        "test", "--prefix-once", "abc",
        bp::std_in<p1,
        bp::std_out>p2,
        ec
    );
    BOOST_REQUIRE(!ec);



    bio::stream<bio::file_descriptor_source> is(p2.source());

    boost::asio::io_service io_service;
    pipe_end pend(io_service, p1.sink().handle());

    std::string s = "hello\n";
    boost::asio::async_write(pend, boost::asio::buffer(s),
        write_handler(is));

    io_service.run();
}

BOOST_AUTO_TEST_CASE(nul)
{
    using boost::unit_test::framework::master_test_suite;

    std::error_code ec;
    bp::child c = bp::execute(
        master_test_suite().argv[1],
        "test", "--is-nul-stdin",
        bp::std_in<bp::null,
        ec);

    BOOST_REQUIRE(!ec);

    c.wait();
    int exit_code = c.exit_code();
#if defined(BOOST_WINDOWS_API)
    BOOST_CHECK_EQUAL(EXIT_SUCCESS, exit_code);
#elif defined(BOOST_POSIX_API)
    BOOST_CHECK_EQUAL(EXIT_SUCCESS, WEXITSTATUS(exit_code));
#endif
}