/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2014-2022,  Regents of the University of California,
 *                           Arizona Board of Regents,
 *                           Colorado State University,
 *                           University Pierre & Marie Curie, Sorbonne University,
 *                           Washington University in St. Louis,
 *                           Beijing Institute of Technology,
 *                           The University of Memphis.
 *
 * This file is part of NFD (Named Data Networking Forwarding Daemon).
 * See AUTHORS.md for complete list of NFD authors and contributors.
 *
 * NFD 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 3 of the License, or (at your option) any later version.
 *
 * NFD 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
 * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "face/websocket-factory.hpp"

#include "face-system-fixture.hpp"
#include "factory-test-common.hpp"

#include <boost/lexical_cast.hpp>

namespace nfd::tests {

using face::WebSocketChannel;
using face::WebSocketFactory;

class WebSocketFactoryFixture : public FaceSystemFactoryFixture<WebSocketFactory>
{
protected:
  shared_ptr<WebSocketChannel>
  createChannel(const std::string& localIp, const std::string& localPort)
  {
    websocket::Endpoint endpoint(boost::asio::ip::address::from_string(localIp),
                                 boost::lexical_cast<uint16_t>(localPort));
    return factory.createChannel(endpoint);
  }
};

BOOST_AUTO_TEST_SUITE(Face)
BOOST_FIXTURE_TEST_SUITE(TestWebSocketFactory, WebSocketFactoryFixture)

BOOST_AUTO_TEST_SUITE(ProcessConfig)

BOOST_AUTO_TEST_CASE(Defaults)
{
  const std::string CONFIG = R"CONFIG(
    face_system
    {
      websocket
    }
  )CONFIG";

  parseConfig(CONFIG, true);
  parseConfig(CONFIG, false);

  checkChannelListEqual(factory, {"ws://0.0.0.0:9696", "ws://[::]:9696"});
  auto channels = factory.getChannels();
  BOOST_CHECK(std::all_of(channels.begin(), channels.end(),
                          [] (const auto& ch) { return ch->isListening(); }));
}

BOOST_AUTO_TEST_CASE(DisableListen)
{
  const std::string CONFIG = R"CONFIG(
    face_system
    {
      websocket
      {
        listen no
        port 7001
      }
    }
  )CONFIG";

  parseConfig(CONFIG, true);
  parseConfig(CONFIG, false);

  BOOST_CHECK_EQUAL(factory.getChannels().size(), 0);
}

BOOST_AUTO_TEST_CASE(DisableV4)
{
  const std::string CONFIG = R"CONFIG(
    face_system
    {
      websocket
      {
        port 7001
        enable_v4 no
        enable_v6 yes
      }
    }
  )CONFIG";

  parseConfig(CONFIG, true);
  parseConfig(CONFIG, false);

  checkChannelListEqual(factory, {"ws://[::]:7001"});
}

BOOST_AUTO_TEST_CASE(DisableV6)
{
  const std::string CONFIG = R"CONFIG(
    face_system
    {
      websocket
      {
        port 7001
        enable_v4 yes
        enable_v6 no
      }
    }
  )CONFIG";

  parseConfig(CONFIG, true);
  parseConfig(CONFIG, false);

  checkChannelListEqual(factory, {"ws://0.0.0.0:7001"});
}

BOOST_AUTO_TEST_CASE(ChangePort)
{
  const std::string CONFIG1 = R"CONFIG(
    face_system
    {
      websocket
      {
        port 9001
      }
    }
  )CONFIG";

  parseConfig(CONFIG1, false);
  checkChannelListEqual(factory, {"ws://0.0.0.0:9001", "ws://[::]:9001"});

  const std::string CONFIG2 = R"CONFIG(
    face_system
    {
      websocket
      {
        port 9002
      }
    }
  )CONFIG";

  parseConfig(CONFIG2, false);
  checkChannelListEqual(factory, {"ws://0.0.0.0:9001", "ws://[::]:9001",
                                  "ws://0.0.0.0:9002", "ws://[::]:9002"});
}

BOOST_AUTO_TEST_CASE(Omitted)
{
  const std::string CONFIG = R"CONFIG(
    face_system
    {
    }
  )CONFIG";

  parseConfig(CONFIG, true);
  parseConfig(CONFIG, false);

  BOOST_CHECK_EQUAL(factory.getChannels().size(), 0);
}

BOOST_AUTO_TEST_CASE(AllDisabled)
{
  const std::string CONFIG = R"CONFIG(
    face_system
    {
      websocket
      {
        enable_v4 no
        enable_v6 no
      }
    }
  )CONFIG";

  BOOST_CHECK_THROW(parseConfig(CONFIG, true), ConfigFile::Error);
  BOOST_CHECK_THROW(parseConfig(CONFIG, false), ConfigFile::Error);
}

BOOST_AUTO_TEST_CASE(BadListen)
{
  const std::string CONFIG = R"CONFIG(
    face_system
    {
      websocket
      {
        listen hello
      }
    }
  )CONFIG";

  BOOST_CHECK_THROW(parseConfig(CONFIG, true), ConfigFile::Error);
  BOOST_CHECK_THROW(parseConfig(CONFIG, false), ConfigFile::Error);
}

BOOST_AUTO_TEST_CASE(BadPort)
{
  // not a number
  const std::string CONFIG1 = R"CONFIG(
    face_system
    {
      websocket
      {
        port hello
      }
    }
  )CONFIG";

  BOOST_CHECK_THROW(parseConfig(CONFIG1, true), ConfigFile::Error);
  BOOST_CHECK_THROW(parseConfig(CONFIG1, false), ConfigFile::Error);

  // negative number
  const std::string CONFIG2 = R"CONFIG(
    face_system
    {
      websocket
      {
        port -1
      }
    }
  )CONFIG";

  BOOST_CHECK_THROW(parseConfig(CONFIG2, true), ConfigFile::Error);
  BOOST_CHECK_THROW(parseConfig(CONFIG2, false), ConfigFile::Error);

  // out of range
  const std::string CONFIG3 = R"CONFIG(
    face_system
    {
      websocket
      {
        port 65536
      }
    }
  )CONFIG";

  BOOST_CHECK_THROW(parseConfig(CONFIG3, true), ConfigFile::Error);
  BOOST_CHECK_THROW(parseConfig(CONFIG3, false), ConfigFile::Error);
}

BOOST_AUTO_TEST_CASE(UnknownOption)
{
  const std::string CONFIG = R"CONFIG(
    face_system
    {
      websocket
      {
        hello
      }
    }
  )CONFIG";

  BOOST_CHECK_THROW(parseConfig(CONFIG, true), ConfigFile::Error);
  BOOST_CHECK_THROW(parseConfig(CONFIG, false), ConfigFile::Error);
}

BOOST_AUTO_TEST_SUITE_END() // ProcessConfig

BOOST_AUTO_TEST_CASE(GetChannels)
{
  BOOST_CHECK_EQUAL(factory.getChannels().empty(), true);

  std::set<std::string> expected;
  expected.insert(createChannel("127.0.0.1", "20070")->getUri().toString());
  expected.insert(createChannel("127.0.0.1", "20071")->getUri().toString());
  expected.insert(createChannel("::1", "20071")->getUri().toString());
  checkChannelListEqual(factory, expected);
}

BOOST_AUTO_TEST_CASE(CreateChannel)
{
  auto channel1 = createChannel("127.0.0.1", "20070");
  auto channel1a = createChannel("127.0.0.1", "20070");
  BOOST_CHECK_EQUAL(channel1, channel1a);
  BOOST_CHECK_EQUAL(channel1->getUri().toString(), "ws://127.0.0.1:20070");

  auto channel2 = createChannel("127.0.0.1", "20071");
  BOOST_CHECK_NE(channel1, channel2);

  auto channel3 = createChannel("::1", "20071");
  BOOST_CHECK_NE(channel2, channel3);
  BOOST_CHECK_EQUAL(channel3->getUri().toString(), "ws://[::1]:20071");
}

BOOST_AUTO_TEST_CASE(UnsupportedCreateFace)
{
  createFace(factory,
             FaceUri("ws://127.0.0.1:20070"),
             {},
             {ndn::nfd::FACE_PERSISTENCY_ON_DEMAND, {}, {}, {}, false, false, false},
             {CreateFaceExpectedResult::FAILURE, 406, "Unsupported protocol"});

  createFace(factory,
             FaceUri("ws://127.0.0.1:20070"),
             {},
             {ndn::nfd::FACE_PERSISTENCY_PERSISTENT, {}, {}, {}, false, false, false},
             {CreateFaceExpectedResult::FAILURE, 406, "Unsupported protocol"});

  createFace(factory,
             FaceUri("ws://127.0.0.1:20070"),
             {},
             {ndn::nfd::FACE_PERSISTENCY_PERMANENT, {}, {}, {}, false, false, false},
             {CreateFaceExpectedResult::FAILURE, 406, "Unsupported protocol"});
}

BOOST_AUTO_TEST_SUITE_END() // TestWebSocketFactory
BOOST_AUTO_TEST_SUITE_END() // Face

} // namespace nfd::tests