#include "libtorrent/session.hpp"
#include "libtorrent/session_settings.hpp"
#include "libtorrent/hasher.hpp"
#include "libtorrent/create_torrent.hpp"
#include <boost/thread.hpp>
#include <boost/tuple/tuple.hpp>

#include "test.hpp"
#include "setup_transfer.hpp"

using namespace libtorrent;

void test_running_torrent(boost::intrusive_ptr<torrent_info> info, size_type file_size)
{
	session ses(fingerprint("LT", 0, 1, 0, 0), std::make_pair(48130, 48140));

	add_torrent_params p;
	p.ti = info;
	p.save_path = ".";
	torrent_handle h = ses.add_torrent(p);

	test_sleep(500);
	torrent_status st = h.status();

	std::cout << "total_wanted: " << st.total_wanted << " : " << file_size * 3 << std::endl;
	TEST_CHECK(st.total_wanted == file_size * 3);
	std::cout << "total_wanted_done: " << st.total_wanted_done << " : 0" << std::endl;
	TEST_CHECK(st.total_wanted_done == 0);

	std::vector<int> prio(3, 1);
	prio[0] = 0;
	h.prioritize_files(prio);

	test_sleep(500);
	st = h.status();

	std::cout << "total_wanted: " << st.total_wanted << " : " << file_size * 2 << std::endl;
	TEST_CHECK(st.total_wanted == file_size * 2);
	std::cout << "total_wanted_done: " << st.total_wanted_done << " : 0" << std::endl;
	TEST_CHECK(st.total_wanted_done == 0);

	prio[1] = 0;
	h.prioritize_files(prio);

	test_sleep(500);
	st = h.status();

	std::cout << "total_wanted: " << st.total_wanted << " : " << file_size << std::endl;
	TEST_CHECK(st.total_wanted == file_size);
	std::cout << "total_wanted_done: " << st.total_wanted_done << " : 0" << std::endl;
	TEST_CHECK(st.total_wanted_done == 0);
}

int test_main()
{
	{
		file_storage fs;
		size_type file_size = 1 * 1024 * 1024 * 1024;
		fs.add_file("test_torrent/tmp1", file_size);
		fs.add_file("test_torrent/tmp2", file_size);
		fs.add_file("test_torrent/tmp3", file_size);
		libtorrent::create_torrent t(fs, 4 * 1024 * 1024);
		t.add_tracker("http://non-existing.com/announce");

		std::vector<char> piece(4 * 1024 * 1024);
		for (int i = 0; i < int(piece.size()); ++i)
			piece[i] = (i % 26) + 'A';
		
		// calculate the hash for all pieces
		sha1_hash ph = hasher(&piece[0], piece.size()).final();
		int num = t.num_pieces();
		for (int i = 0; i < num; ++i)
			t.set_hash(i, ph);

		std::vector<char> tmp;
		std::back_insert_iterator<std::vector<char> > out(tmp);
		bencode(out, t.generate());
		boost::intrusive_ptr<torrent_info> info(new torrent_info(&tmp[0], tmp.size()));

		test_running_torrent(info, file_size);
	}

	{
		file_storage fs;

		fs.add_file("test_torrent/tmp1", 0);
		libtorrent::create_torrent t(fs, 4 * 1024 * 1024);
		t.add_tracker("http://non-existing.com/announce");

		std::vector<char> tmp;
		std::back_insert_iterator<std::vector<char> > out(tmp);
		bencode(out, t.generate());
		boost::intrusive_ptr<torrent_info> info(new torrent_info(&tmp[0], tmp.size()));
		test_running_torrent(info, 0);
	}

	return 0;
}