/*

Copyright (c) 2017, 2019-2020, Arvid Norberg
Copyright (c) 2017, AllSeeingEyeTolledEweSew
Copyright (c) 2018, Alden Torres
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the distribution.
    * Neither the name of the author nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

*/

#include "test.hpp"
#include "libtorrent/add_torrent_params.hpp"
#include "libtorrent/session.hpp"
#include "libtorrent/session_params.hpp"
#include "libtorrent/torrent_handle.hpp"
#include "libtorrent/torrent_info.hpp"
#include "libtorrent/aux_/path.hpp"
#include "settings.hpp"
#include "setup_transfer.hpp"

#include <fstream>

using namespace libtorrent;
namespace lt = libtorrent;

namespace {

std::string file(std::string name)
{
	return combine_path(parent_path(current_working_directory())
		, combine_path("test_torrents", name));
}

void print_alerts(lt::session& ses)
{
	std::vector<alert*> alerts;
	ses.pop_alerts(&alerts);
	for (auto a : alerts)
	{
		std::printf("[%s] %s\n", a->what(), a->message().c_str());
	}
}

void test_add_and_get_flags(torrent_flags_t const flags)
{
	session ses(settings());
	add_torrent_params p;
	p.save_path = ".";
	error_code ec;
	p.ti = std::make_shared<torrent_info>(file("base.torrent"),
		std::ref(ec));
	if (flags & torrent_flags::seed_mode)
	{
		std::ofstream file("temp");
		std::vector<char> temp(425);
		file.write(temp.data(), std::streamsize(temp.size()));
	}
	TEST_CHECK(!ec);
	p.flags = flags;
	const torrent_handle h = ses.add_torrent(p);
	TEST_CHECK(h.is_valid());
	TEST_EQUAL(h.flags() & flags, flags);
	print_alerts(ses);
}

void test_set_after_add(torrent_flags_t const flags)
{
	session ses(settings());
	add_torrent_params p;
	p.save_path = ".";
	error_code ec;
	p.ti = std::make_shared<torrent_info>(file("base.torrent"),
		std::ref(ec));
	TEST_CHECK(!ec);
	p.flags = torrent_flags::all & ~flags;
	const torrent_handle h = ses.add_torrent(p);
	TEST_CHECK(h.is_valid());
	TEST_EQUAL(h.flags() & flags, torrent_flags_t{});
	h.set_flags(flags);
	TEST_EQUAL(h.flags() & flags, flags);
	print_alerts(ses);
}

void test_unset_after_add(torrent_flags_t const flags)
{
	session ses(settings());
	add_torrent_params p;
	p.save_path = ".";
	error_code ec;
	p.ti = std::make_shared<torrent_info>(file("base.torrent"),
		std::ref(ec));
	TEST_CHECK(!ec);
	p.flags = flags;
	const torrent_handle h = ses.add_torrent(p);
	TEST_CHECK(h.is_valid());
	TEST_EQUAL(h.flags() & flags, flags);
	h.unset_flags(flags);
	TEST_EQUAL(h.flags() & flags, torrent_flags_t{});
	print_alerts(ses);
}

} // anonymous namespace

TORRENT_TEST(flag_seed_mode)
{
	// seed-mode (can't be set after adding)
	test_add_and_get_flags(torrent_flags::seed_mode);
	test_unset_after_add(torrent_flags::seed_mode);
}

TORRENT_TEST(flag_upload_mode)
{
	// upload-mode
	test_add_and_get_flags(torrent_flags::upload_mode);
	test_set_after_add(torrent_flags::upload_mode);
	test_unset_after_add(torrent_flags::upload_mode);
}

#ifndef TORRENT_DISABLE_SHARE_MODE
TORRENT_TEST(flag_share_mode)
{
	// share-mode
	test_add_and_get_flags(torrent_flags::share_mode);
	test_set_after_add(torrent_flags::share_mode);
	test_unset_after_add(torrent_flags::share_mode);
}
#endif

TORRENT_TEST(flag_apply_ip_filter)
{
	// apply-ip-filter
	test_add_and_get_flags(torrent_flags::apply_ip_filter);
	test_set_after_add(torrent_flags::apply_ip_filter);
	test_unset_after_add(torrent_flags::apply_ip_filter);
}

TORRENT_TEST(flag_paused)
{
	// paused
	test_add_and_get_flags(torrent_flags::paused);
	// TODO: change to a different test setup. currently always paused.
	//test_set_after_add(torrent_flags::paused);
	//test_unset_after_add(torrent_flags::paused);
}

TORRENT_TEST(flag_auto_managed)
{
	// auto-managed
	test_add_and_get_flags(torrent_flags::auto_managed);
	test_set_after_add(torrent_flags::auto_managed);
	test_unset_after_add(torrent_flags::auto_managed);
}

// super seeding mode is automatically turned off if we're not a seed
// since the posix_disk_io is not threaded, this will happen immediately
#if TORRENT_HAVE_MMAP
#ifndef TORRENT_DISABLE_SUPERSEEDING
TORRENT_TEST(flag_super_seeding)
{
	// super-seeding
	test_add_and_get_flags(torrent_flags::super_seeding);
	test_unset_after_add(torrent_flags::super_seeding);
	test_set_after_add(torrent_flags::super_seeding);
}
#endif
#endif

TORRENT_TEST(flag_sequential_download)
{
	// sequential-download
	test_add_and_get_flags(torrent_flags::sequential_download);
	test_set_after_add(torrent_flags::sequential_download);
	test_unset_after_add(torrent_flags::sequential_download);
}

// the stop when ready flag will be cleared when the torrent is ready to start
// downloading.
// since the posix_disk_io is not threaded, this will happen immediately
#if TORRENT_HAVE_MMAP
TORRENT_TEST(flag_stop_when_ready)
{
	// stop-when-ready
	// TODO: this test is flaky, since the torrent will become ready before
	// asking for the flags, and by then stop_when_ready will have been cleared
	//test_add_and_get_flags(torrent_flags::stop_when_ready);
	// setting stop-when-ready when already stopped has no effect.
	// TODO: change to a different test setup. currently always paused.
	//test_set_after_add(torrent_flags::stop_when_ready);
	test_unset_after_add(torrent_flags::stop_when_ready);
}
#endif

TORRENT_TEST(flag_disable_dht)
{
	test_add_and_get_flags(torrent_flags::disable_dht);
	test_set_after_add(torrent_flags::disable_dht);
	test_unset_after_add(torrent_flags::disable_dht);
}


TORRENT_TEST(flag_disable_lsd)
{
	test_add_and_get_flags(torrent_flags::disable_lsd);
	test_set_after_add(torrent_flags::disable_lsd);
	test_unset_after_add(torrent_flags::disable_lsd);
}

TORRENT_TEST(flag_disable_pex)
{
	test_add_and_get_flags(torrent_flags::disable_pex);
	test_set_after_add(torrent_flags::disable_pex);
	test_unset_after_add(torrent_flags::disable_pex);
}
