// Copyright (c) 2012-2015, The CryptoNote developers, The Bytecoin developers
//
// This file is part of Bytecoin.
//
// Bytecoin is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Bytecoin 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Bytecoin.  If not, see <http://www.gnu.org/licenses/>.

#include <System/Dispatcher.h>
#include <System/ContextGroup.h>
#include <System/Event.h>
#include <System/InterruptedException.h>
#include <System/Ipv4Address.h>
#include <System/TcpConnection.h>
#include <System/TcpConnector.h>
#include <System/TcpListener.h>
#include <System/Timer.h>
#include <gtest/gtest.h>

using namespace System;

class TcpListenerTests : public testing::Test {
public:
  TcpListenerTests() :
    event(dispatcher), listener(dispatcher, Ipv4Address("127.0.0.1"), 6666), contextGroup(dispatcher) {
  }
  
  Dispatcher dispatcher;
  Event event;
  TcpListener listener;
  ContextGroup contextGroup;
};

TEST_F(TcpListenerTests, tcpListener1) {
  contextGroup.spawn([&] {
    TcpConnector connector(dispatcher);
    connector.connect(Ipv4Address("127.0.0.1"), 6666);
    event.set();
  });

  listener.accept();
  event.wait();
}


TEST_F(TcpListenerTests, interruptListener) {
  bool stopped = false;
  contextGroup.spawn([&] {
    try {
      listener.accept();
    } catch (InterruptedException&) {
      stopped = true;
    }
  });
  contextGroup.interrupt();
  contextGroup.wait();

  ASSERT_TRUE(stopped);
}

TEST_F(TcpListenerTests, acceptAfterInterrupt) {
  bool stopped = false;
  contextGroup.spawn([&] {
    try {
      listener.accept();
    } catch (InterruptedException&) {
      stopped = true;
    }
  });
  contextGroup.interrupt();
  contextGroup.wait();

  ASSERT_TRUE(stopped);
  stopped = false;
  contextGroup.spawn([&] {
    Timer(dispatcher).sleep(std::chrono::milliseconds(1));
    contextGroup.interrupt();
  });
  contextGroup.spawn([&] {
    try {
      TcpConnector connector(dispatcher);
      connector.connect(Ipv4Address("127.0.0.1"), 6666);
    } catch (InterruptedException&) {
      stopped = true;
    }
  });
  contextGroup.spawn([&] {
    try {
      listener.accept();
    } catch (InterruptedException&) {
      stopped = true;
    }
  });
  contextGroup.wait();
  ASSERT_FALSE(stopped);
}

TEST_F(TcpListenerTests, tcpListener3) {
  bool stopped = false;
  contextGroup.spawn([&] {
    Timer(dispatcher).sleep(std::chrono::milliseconds(100));
    contextGroup.interrupt();
  });

  contextGroup.spawn([&] {
    try {
      listener.accept();
    } catch (InterruptedException&) {
      stopped = true;
    }
  });

  contextGroup.wait();
  ASSERT_TRUE(stopped);
}