/*
 * Copyright (c) 2011 Tobias Markmann
 * Licensed under the simplified BSD license.
 * See Documentation/Licenses/BSD-simplified.txt for more information.
 */

/*
 * Copyright (c) 2013-2015 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <iostream>

#include <boost/smart_ptr/make_shared.hpp>

#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/extensions/TestFactoryRegistry.h>

#include <Swiften/Base/ByteArray.h>
#include <Swiften/Base/Log.h>
#include <Swiften/Base/Override.h>
#include <Swiften/Client/DummyStanzaChannel.h>
#include <Swiften/Crypto/CryptoProvider.h>
#include <Swiften/Crypto/PlatformCryptoProvider.h>
#include <Swiften/Elements/IBB.h>
#include <Swiften/Elements/JingleFileTransferDescription.h>
#include <Swiften/Elements/JingleIBBTransportPayload.h>
#include <Swiften/Elements/JingleS5BTransportPayload.h>
#include <Swiften/EventLoop/DummyEventLoop.h>
#include <Swiften/FileTransfer/ByteArrayWriteBytestream.h>
#include <Swiften/FileTransfer/DefaultFileTransferTransporterFactory.h>
#include <Swiften/FileTransfer/IncomingJingleFileTransfer.h>
#include <Swiften/FileTransfer/SOCKS5BytestreamProxiesManager.h>
#include <Swiften/FileTransfer/SOCKS5BytestreamRegistry.h>
#include <Swiften/FileTransfer/SOCKS5BytestreamServerManager.h>
#include <Swiften/Jingle/FakeJingleSession.h>
#include <Swiften/Network/DummyConnectionFactory.h>
#include <Swiften/Network/DummyConnectionServerFactory.h>
#include <Swiften/Network/DummyTimerFactory.h>
#include <Swiften/Network/NATTraverser.h>
#include <Swiften/Network/PlatformNATTraversalWorker.h>
#include <Swiften/Network/PlatformNetworkEnvironment.h>
#include <Swiften/Network/StaticDomainNameResolver.h>
#include <Swiften/Queries/IQRouter.h>

using namespace Swift;
using namespace boost;

class IncomingJingleFileTransferTest : public CppUnit::TestFixture {
		CPPUNIT_TEST_SUITE(IncomingJingleFileTransferTest);
		CPPUNIT_TEST(test_AcceptOnyIBBSendsSessionAccept);
		CPPUNIT_TEST(test_OnlyIBBTransferReceiveWorks);
		//CPPUNIT_TEST(test_AcceptFailingS5BFallsBackToIBB);
		CPPUNIT_TEST_SUITE_END();
public:
		shared_ptr<IncomingJingleFileTransfer> createTestling() {
			JID ourJID("our@jid.org/full");
			return boost::make_shared<IncomingJingleFileTransfer>(ourJID, shared_ptr<JingleSession>(session), jingleContentPayload, ftTransporterFactory, timerFactory, crypto.get());
		}

		IQ::ref createIBBRequest(IBB::ref ibb, const JID& from, const std::string& id) {
			IQ::ref request = IQ::createRequest(IQ::Set, JID("foo@bar.com/baz"), id, ibb);
			request->setFrom(from);
			return request;
		}

		void setUp() {
			crypto = boost::shared_ptr<CryptoProvider>(PlatformCryptoProvider::create());
			eventLoop = new DummyEventLoop();
			resolver = new StaticDomainNameResolver(eventLoop);
			session = boost::make_shared<FakeJingleSession>("foo@bar.com/baz", "mysession");
			jingleContentPayload = make_shared<JingleContentPayload>();
			// fakeRJTCSF = make_shared<FakeRemoteJingleTransportCandidateSelectorFactory>();
			// fakeLJTCF = make_shared<FakeLocalJingleTransportCandidateGeneratorFactory>();
			stanzaChannel = new DummyStanzaChannel();
			connectionFactory = new DummyConnectionFactory(eventLoop);
			serverConnectionFactory = new DummyConnectionServerFactory(eventLoop);
			iqRouter = new IQRouter(stanzaChannel);
			bytestreamRegistry = new SOCKS5BytestreamRegistry();
			networkEnvironment = new PlatformNetworkEnvironment();
			natTraverser = new PlatformNATTraversalWorker(eventLoop);
			bytestreamServerManager = new SOCKS5BytestreamServerManager(bytestreamRegistry, serverConnectionFactory, networkEnvironment, natTraverser);
			idGenerator = new SimpleIDGenerator();
			timerFactory = new DummyTimerFactory();
			bytestreamProxy = new SOCKS5BytestreamProxiesManager(connectionFactory, timerFactory, resolver, iqRouter, "bar.com");
			ftTransporterFactory = new DefaultFileTransferTransporterFactory(bytestreamRegistry, bytestreamServerManager, bytestreamProxy, idGenerator, connectionFactory, timerFactory, crypto.get(), iqRouter);
		}

		void tearDown() {
			delete ftTransporterFactory;
			delete networkEnvironment;
			delete natTraverser;
			delete bytestreamServerManager;
			delete bytestreamProxy;
			delete serverConnectionFactory;
			delete connectionFactory;
			delete timerFactory;
			delete bytestreamRegistry;
			delete iqRouter;
			delete stanzaChannel;
			delete resolver;
			delete eventLoop;
			Log::setLogLevel(Log::error);
		}

		// Tests whether IncomingJingleFileTransfer would accept a IBB only file transfer.
		void test_AcceptOnyIBBSendsSessionAccept() {
			//1. create your test incoming file transfer
			shared_ptr<JingleFileTransferDescription> desc = make_shared<JingleFileTransferDescription>();
			desc->setFileInfo(JingleFileTransferFileInfo("foo.txt", "", 10));
			jingleContentPayload->addDescription(desc);
			JingleIBBTransportPayload::ref tpRef = make_shared<JingleIBBTransportPayload>();
			tpRef->setSessionID("mysession");
			jingleContentPayload->addTransport(tpRef);

			shared_ptr<IncomingJingleFileTransfer> fileTransfer = createTestling();

			//2. do 'accept' on a dummy writebytestream (you'll have to look if there already is one)
			shared_ptr<ByteArrayWriteBytestream> byteStream = make_shared<ByteArrayWriteBytestream>();
			fileTransfer->accept(byteStream);

			// check whether accept has been called
			getCall<FakeJingleSession::AcceptCall>(0);
		}

		void test_OnlyIBBTransferReceiveWorks() {
			//1. create your test incoming file transfer
			shared_ptr<JingleFileTransferDescription> desc = make_shared<JingleFileTransferDescription>();
			desc->setFileInfo(JingleFileTransferFileInfo("file.txt", "", 10));
			jingleContentPayload->addDescription(desc);
			JingleIBBTransportPayload::ref tpRef = make_shared<JingleIBBTransportPayload>();
			tpRef->setSessionID("mysession");
			jingleContentPayload->addTransport(tpRef);

			shared_ptr<IncomingJingleFileTransfer> fileTransfer = createTestling();

			//2. do 'accept' on a dummy writebytestream (you'll have to look if there already is one)
			shared_ptr<ByteArrayWriteBytestream> byteStream = make_shared<ByteArrayWriteBytestream>();
			fileTransfer->accept(byteStream);

			// check whether accept has been called
			getCall<FakeJingleSession::AcceptCall>(0);
			stanzaChannel->onIQReceived(createIBBRequest(IBB::createIBBOpen("mysession", 0x10), "foo@bar.com/baz", "id-open"));
			stanzaChannel->onIQReceived(createIBBRequest(IBB::createIBBData("mysession", 0, createByteArray("abc")), "foo@bar.com/baz", "id-a"));
			CPPUNIT_ASSERT(createByteArray("abc") == byteStream->getData());
		}

		void test_AcceptFailingS5BFallsBackToIBB() {
			//1. create your test incoming file transfer
			addFileTransferDescription();

			// add SOCKS5BytestreamTransportPayload
			JingleS5BTransportPayload::ref payLoad = addJingleS5BPayload();

			shared_ptr<IncomingJingleFileTransfer> fileTransfer = createTestling();

			//2. do 'accept' on a dummy writebytestream (you'll have to look if there already is one)
			shared_ptr<ByteArrayWriteBytestream> byteStream = make_shared<ByteArrayWriteBytestream>();
			fileTransfer->accept(byteStream);

			// candidates are gathered

			// check whether accept has been called
			FakeJingleSession::AcceptCall acceptCall = getCall<FakeJingleSession::AcceptCall>(0);
			CPPUNIT_ASSERT_EQUAL(payLoad->getSessionID(), acceptCall.payload->getSessionID());

			// check for candidate error
			FakeJingleSession::InfoTransportCall infoTransportCall = getCall<FakeJingleSession::InfoTransportCall>(1);
			JingleS5BTransportPayload::ref s5bPayload = dynamic_pointer_cast<JingleS5BTransportPayload>(infoTransportCall.payload);
			CPPUNIT_ASSERT(s5bPayload->hasCandidateError());

			// indicate transport replace (Romeo)
			session->handleTransportReplaceReceived(getContentID(), addJingleIBBPayload());

			FakeJingleSession::AcceptTransportCall acceptTransportCall = getCall<FakeJingleSession::AcceptTransportCall>(2);

			// send a bit of data
			stanzaChannel->onIQReceived(createIBBRequest(IBB::createIBBOpen("mysession", 0x10), "foo@bar.com/baz", "id-open"));
			stanzaChannel->onIQReceived(createIBBRequest(IBB::createIBBData("mysession", 0, createByteArray("abc")), "foo@bar.com/baz", "id-a"));
			CPPUNIT_ASSERT(createByteArray("abc") == byteStream->getData());
		}
#if 0
		void test_S5BTransferReceiveTest() {
			addFileTransferDescription();
			JingleS5BTransportPayload::ref payLoad = addJingleS5BPayload();
		}
#endif
private:
	void addFileTransferDescription() {
		shared_ptr<JingleFileTransferDescription> desc = make_shared<JingleFileTransferDescription>();
		desc->setFileInfo(JingleFileTransferFileInfo("file.txt", "", 10));
		jingleContentPayload->addDescription(desc);
	}

	shared_ptr<JingleS5BTransportPayload> addJingleS5BPayload() {
		JingleS5BTransportPayload::ref payLoad = make_shared<JingleS5BTransportPayload>();
		payLoad->setSessionID("mysession");
		jingleContentPayload->addTransport(payLoad);
		return payLoad;
	}

	shared_ptr<JingleIBBTransportPayload> addJingleIBBPayload() {
		JingleIBBTransportPayload::ref payLoad = make_shared<JingleIBBTransportPayload>();
		payLoad->setSessionID("mysession");
		jingleContentPayload->addTransport(payLoad);
		return payLoad;
	}
	
	JingleContentID getContentID() const  {
		return JingleContentID(jingleContentPayload->getName(), jingleContentPayload->getCreator());
	}

	template <typename T> T getCall(int i) const {
		size_t index = static_cast<size_t>(i);
		CPPUNIT_ASSERT(index < session->calledCommands.size());
		T* cmd = boost::get<T>(&session->calledCommands[index]);
		CPPUNIT_ASSERT(cmd);
		return *cmd;
	}

private:
	EventLoop* eventLoop;
	boost::shared_ptr<CryptoProvider> crypto;
	boost::shared_ptr<FakeJingleSession> session;
	shared_ptr<JingleContentPayload> jingleContentPayload;
//	shared_ptr<FakeRemoteJingleTransportCandidateSelectorFactory> fakeRJTCSF;
//	shared_ptr<FakeLocalJingleTransportCandidateGeneratorFactory> fakeLJTCF;
	FileTransferTransporterFactory* ftTransporterFactory;
	SOCKS5BytestreamServerManager* bytestreamServerManager;
	DummyStanzaChannel* stanzaChannel;
	IQRouter* iqRouter;
	SOCKS5BytestreamRegistry* bytestreamRegistry;
	DummyConnectionFactory* connectionFactory;
	DummyConnectionServerFactory* serverConnectionFactory;
	SOCKS5BytestreamProxiesManager* bytestreamProxy;
	DummyTimerFactory* timerFactory;
	NetworkEnvironment* networkEnvironment;
	NATTraverser* natTraverser;
	IDGenerator* idGenerator;
	DomainNameResolver* resolver;
};

CPPUNIT_TEST_SUITE_REGISTRATION(IncomingJingleFileTransferTest);