/***************************************************************************
 *   Copyright (C) 2012 by Joris Guisson                                   *
 *   joris.guisson@gmail.com                                               *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
 ***************************************************************************/

#include <QtTest>
#include <QObject>
#include <util/log.h>
#include <peer/packetreader.h>
#include <interfaces/peerinterface.h>


class PacketReaderTest : public QObject, public bt::PeerInterface
{
	Q_OBJECT
public:
	PacketReaderTest(QObject* parent = 0) : QObject(parent), bt::PeerInterface(bt::PeerID(), 100)
	{}
	
	void chunkAllowed(bt::Uint32 chunk) override
	{
		Q_UNUSED(chunk);
	}
	
	void handlePacket(const bt::Uint8* packet, bt::Uint32 size) override
	{
		received_packet.reset(new bt::Uint8[size]);
		memcpy(received_packet.data(), packet, size);
		received_packet_size = size;
	}
	
	bool check(const bt::Uint8* packet, bt::Uint32 size)
	{
		return received_packet_size == size && memcmp(packet, received_packet.data(), size) == 0;
	}
	
	bt::Uint32 averageDownloadSpeed() const override
	{
		return 0;
	}
	
	void kill() override
	{
	}
	
	void reset()
	{
		received_packet_size = 0;
		received_packet.reset();
	}
	
private Q_SLOTS:
	void initTestCase()
	{
		bt::InitLog("packetreadertest.log");
	}
	
	void cleanupTestCase()
	{
	}
	
	void testOnePacket()
	{
		reset();
		
		bt::Uint8 data[] = {0, 0, 0, 10, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE};
		bt::PacketReader pr(1024);
		
		pr.onDataReady(data, 14);
		QVERIFY(pr.ok());
		pr.update(*this);
		QVERIFY(check(data + 4, 10));
	}
	
	void testMultiplePackets()
	{
		reset();
		
		bt::Uint8 data[] = {0, 0, 0, 10, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE};
		bt::Uint8 data2[] = {0, 0, 0, 10, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
		bt::PacketReader pr(1024);
		
		pr.onDataReady(data, 14);
		QVERIFY(pr.ok());
		pr.update(*this);
		QVERIFY(check(data + 4, 10));
		
		pr.onDataReady(data2, 14);
		QVERIFY(pr.ok());
		pr.update(*this);
		QVERIFY(check(data2 + 4, 10));
	}
	
	void testChunked()
	{
		reset();
		
		bt::Uint8 data[] = {0, 0, 0, 10, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE};
		bt::PacketReader pr(1024);
		
		pr.onDataReady(data, 7);
		QVERIFY(pr.ok());
		pr.update(*this);
		QVERIFY(received_packet_size == 0);
		
		pr.onDataReady(data + 7, 7);
		QVERIFY(pr.ok());
		pr.update(*this);
		QVERIFY(check(data + 4, 10));
	}
	
	void testIncompleteLength()
	{
		reset();
		
		bt::Uint8 data[] = {0, 0, 0, 10, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE};
		bt::PacketReader pr(1024);
		
		pr.onDataReady(data, 3);
		QVERIFY(pr.ok());
		pr.update(*this);
		QVERIFY(received_packet_size == 0);
		
		pr.onDataReady(data + 3, 11);
		QVERIFY(pr.ok());
		pr.update(*this);
		QVERIFY(check(data + 4, 10));
	}
	
	void testLengthToLarge()
	{
		reset();
		
		bt::Uint8 data[] = {0, 0, 0, 10, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE};
		bt::PacketReader pr(7);
		
		pr.onDataReady(data, 14);
		QVERIFY(!pr.ok());
		
		pr.update(*this);
		QVERIFY(received_packet_size == 0);
	}

	void testUnicodeLiteral()
	{
		QString a = QString("%1Torrent").arg(QChar(0x00B5));
		QVERIFY(a == QStringLiteral("µTorrent"));
	}
	
private:
	QScopedArrayPointer<bt::Uint8> received_packet;
	bt::Uint32 received_packet_size;
};

QTEST_MAIN(PacketReaderTest)

#include "packetreadertest.moc"

