/*
 *  Copyright 2006 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "rtc_base/test_client.h"

#include <memory>
#include <utility>

#include "api/environment/environment.h"
#include "rtc_base/async_tcp_socket.h"
#include "rtc_base/async_udp_socket.h"
#include "rtc_base/logging.h"
#include "rtc_base/net_test_helpers.h"
#include "rtc_base/physical_socket_server.h"
#include "rtc_base/socket.h"
#include "rtc_base/socket_address.h"
#include "rtc_base/test_echo_server.h"
#include "test/create_test_environment.h"
#include "test/gmock.h"
#include "test/gtest.h"
#include "test/run_loop.h"

#define MAYBE_SKIP_IPV4                        \
  if (!::webrtc::HasIPv4Enabled()) {           \
    RTC_LOG(LS_INFO) << "No IPv4... skipping"; \
    return;                                    \
  }

#define MAYBE_SKIP_IPV6                        \
  if (!::webrtc::HasIPv6Enabled()) {           \
    RTC_LOG(LS_INFO) << "No IPv6... skipping"; \
    return;                                    \
  }

namespace webrtc {
namespace {

using ::testing::NotNull;

void TestUdpInternal(const SocketAddress& loopback) {
  const Environment env = CreateTestEnvironment();
  PhysicalSocketServer socket_server;
  test::RunLoop main_thread(&socket_server);
  std::unique_ptr<Socket> socket =
      socket_server.Create(loopback.family(), SOCK_DGRAM);
  ASSERT_THAT(socket, NotNull());
  socket->Bind(loopback);

  TestClient client(std::make_unique<AsyncUDPSocket>(env, std::move(socket)));
  SocketAddress addr = client.address(), from;
  EXPECT_EQ(3, client.SendTo("foo", 3, addr));
  EXPECT_TRUE(client.CheckNextPacket("foo", 3, &from));
  EXPECT_EQ(from, addr);
  EXPECT_TRUE(client.CheckNoPacket());
}

void TestTcpInternal(const SocketAddress& loopback) {
  const Environment env = CreateTestEnvironment();
  PhysicalSocketServer socket_server;
  test::RunLoop main_thread(&socket_server);
  TestEchoServer server(env, &socket_server, loopback);

  std::unique_ptr<Socket> socket =
      socket_server.Create(loopback.family(), SOCK_STREAM);
  ASSERT_THAT(socket, NotNull());
  ASSERT_EQ(socket->Bind(loopback), 0);
  ASSERT_EQ(socket->Connect(server.address()), 0);
  auto tcp_socket = std::make_unique<AsyncTCPSocket>(env, std::move(socket));

  TestClient client(std::move(tcp_socket));
  SocketAddress addr = client.address(), from;
  EXPECT_TRUE(client.CheckConnected());
  EXPECT_EQ(3, client.Send("foo", 3));
  EXPECT_TRUE(client.CheckNextPacket("foo", 3, &from));
  EXPECT_EQ(from, server.address());
  EXPECT_TRUE(client.CheckNoPacket());
}

// Tests whether the TestClient can send UDP to itself.
TEST(TestClientTest, TestUdpIPv4) {
  MAYBE_SKIP_IPV4;
  TestUdpInternal(SocketAddress("127.0.0.1", 0));
}

#if defined(WEBRTC_LINUX)
#define MAYBE_TestUdpIPv6 DISABLED_TestUdpIPv6
#else
#define MAYBE_TestUdpIPv6 TestUdpIPv6
#endif
TEST(TestClientTest, MAYBE_TestUdpIPv6) {
  MAYBE_SKIP_IPV6;
  TestUdpInternal(SocketAddress("::1", 0));
}

// Tests whether the TestClient can connect to a server and exchange data.
TEST(TestClientTest, TestTcpIPv4) {
  MAYBE_SKIP_IPV4;
  TestTcpInternal(SocketAddress("127.0.0.1", 0));
}

#if defined(WEBRTC_LINUX)
#define MAYBE_TestTcpIPv6 DISABLED_TestTcpIPv6
#else
#define MAYBE_TestTcpIPv6 TestTcpIPv6
#endif
TEST(TestClientTest, MAYBE_TestTcpIPv6) {
  MAYBE_SKIP_IPV6;
  TestTcpInternal(SocketAddress("::1", 0));
}

}  // namespace
}  // namespace webrtc