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/*
 * Copyright (c) 2010-2016 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <string>

#include <boost/date_time/posix_time/posix_time_types.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/smart_ptr/make_shared.hpp>

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

#include <Swiften/Base/Algorithm.h>
#include <Swiften/Base/sleep.h>
#include <Swiften/EventLoop/DummyEventLoop.h>
#include <Swiften/Network/BoostConnection.h>
#include <Swiften/Network/BoostIOServiceThread.h>
#include <Swiften/Network/HostAddress.h>
#include <Swiften/Network/HostAddressPort.h>

using namespace Swift;

class BoostConnectionTest : public CppUnit::TestFixture {
        CPPUNIT_TEST_SUITE(BoostConnectionTest);
        CPPUNIT_TEST(testDestructor);
        CPPUNIT_TEST(testDestructor_PendingEvents);
        CPPUNIT_TEST(testWrite);
        CPPUNIT_TEST(testWriteMultipleSimultaniouslyQueuesWrites);
#ifdef TEST_IPV6
        CPPUNIT_TEST(testWrite_IPv6);
#endif
        CPPUNIT_TEST_SUITE_END();

    public:
        void setUp() {
            eventLoop_ = new DummyEventLoop();
            boostIOServiceThread_ = new BoostIOServiceThread();
            boostIOService_ = boost::make_shared<boost::asio::io_service>();
            disconnected_ = false;
            connectFinished_ = false;
        }

        void tearDown() {
            delete boostIOServiceThread_;
            while (eventLoop_->hasEvents()) {
                eventLoop_->processEvents();
            }
            delete eventLoop_;
        }

        void testDestructor() {
            {
                BoostConnection::ref testling(BoostConnection::create(boostIOServiceThread_->getIOService(), eventLoop_));
                testling->connect(HostAddressPort(HostAddress(getenv("SWIFT_NETWORK_TEST_IPV4")), 5222));
            }
        }

        void testDestructor_PendingEvents() {
            {
                BoostConnection::ref testling(BoostConnection::create(boostIOServiceThread_->getIOService(), eventLoop_));
                testling->connect(HostAddressPort(HostAddress(getenv("SWIFT_NETWORK_TEST_IPV4")), 5222));
                while (!eventLoop_->hasEvents()) {
                    Swift::sleep(10);
                }
            }
            eventLoop_->processEvents();
        }

        void testWrite() {
            using namespace boost::posix_time;

            BoostConnection::ref testling(BoostConnection::create(boostIOServiceThread_->getIOService(), eventLoop_));
            testling->onConnectFinished.connect(boost::bind(&BoostConnectionTest::doWrite, this, testling.get()));
            testling->onDataRead.connect(boost::bind(&BoostConnectionTest::handleDataRead, this, _1));
            testling->onDisconnected.connect(boost::bind(&BoostConnectionTest::handleDisconnected, this));
            testling->connect(HostAddressPort(HostAddress(getenv("SWIFT_NETWORK_TEST_IPV4")), 5222));

            boost::posix_time::ptime start = second_clock::local_time();
            while (receivedData_.empty() && ((second_clock::local_time() - start) < seconds(60)))  {
                Swift::sleep(10);
                eventLoop_->processEvents();
            }
            CPPUNIT_ASSERT_EQUAL(false, receivedData_.empty());
            testling->disconnect();
        }

        void testWrite_IPv6() {
            using namespace boost::posix_time;

            BoostConnection::ref testling(BoostConnection::create(boostIOServiceThread_->getIOService(), eventLoop_));
            testling->onConnectFinished.connect(boost::bind(&BoostConnectionTest::doWrite, this, testling.get()));
            testling->onDataRead.connect(boost::bind(&BoostConnectionTest::handleDataRead, this, _1));
            testling->onDisconnected.connect(boost::bind(&BoostConnectionTest::handleDisconnected, this));
            testling->connect(HostAddressPort(HostAddress(getenv("SWIFT_NETWORK_TEST_IPV6")), 5222));

            boost::posix_time::ptime start = second_clock::local_time();
            while (receivedData_.empty() && ((second_clock::local_time() - start) < seconds(60)))  {
                Swift::sleep(10);
                eventLoop_->processEvents();
            }
            CPPUNIT_ASSERT_EQUAL(false, receivedData_.empty());
            testling->disconnect();
        }


        void testWriteMultipleSimultaniouslyQueuesWrites() {
            BoostConnection::ref testling(BoostConnection::create(boostIOService_, eventLoop_));
            testling->onConnectFinished.connect(boost::bind(&BoostConnectionTest::handleConnectFinished, this));
            testling->onDataRead.connect(boost::bind(&BoostConnectionTest::handleDataRead, this, _1));
            testling->onDisconnected.connect(boost::bind(&BoostConnectionTest::handleDisconnected, this));
            testling->connect(HostAddressPort(HostAddress(getenv("SWIFT_NETWORK_TEST_IPV4")), 5222));
            while (!connectFinished_) {
                boostIOService_->run_one();
                eventLoop_->processEvents();
            }

            testling->write(createSafeByteArray("<stream:strea"));
            testling->write(createSafeByteArray("m"));
            testling->write(createSafeByteArray(">"));

             // Check that we only did one write event, the others are queued
            /*int runHandlers = */boostIOService_->poll();
            // Disabling this test, because poll runns all handlers that are added during poll() as well, so
            // this test doesn't really work any more. We'll have to trust that things are queued.
            //CPPUNIT_ASSERT_EQUAL(1, runHandlers);
            // Process the other events
            while (receivedData_.empty()) {
                boostIOService_->run_one();
                eventLoop_->processEvents();
            }

            // Disconnect & clean up
            testling->disconnect();
            while (!disconnected_) {
                boostIOService_->run_one();
                eventLoop_->processEvents();
            }
        }

        void doWrite(BoostConnection* connection) {
            connection->write(createSafeByteArray("<stream:stream>"));
            connection->write(createSafeByteArray("\r\n\r\n")); // Temporarily, while we don't have an xmpp server running on ipv6
        }

        void handleDataRead(boost::shared_ptr<SafeByteArray> data) {
            append(receivedData_, *data);
        }

        void handleDisconnected() {
            disconnected_ = true;
        }

        void handleConnectFinished() {
            connectFinished_ = true;
        }

    private:
        BoostIOServiceThread* boostIOServiceThread_;
        boost::shared_ptr<boost::asio::io_service> boostIOService_;
        DummyEventLoop* eventLoop_;
        ByteArray receivedData_;
        bool disconnected_;
        bool connectFinished_;
};

CPPUNIT_TEST_SUITE_REGISTRATION(BoostConnectionTest);