#include <gtest/gtest.h>

#include <boost/asio/co_spawn.hpp>
#include <boost/asio/detached.hpp>
#include <boost/asio/ip/tcp.hpp>
#include <larra/features.hpp>
#include <larra/impl/mock_socket.hpp>
#include <larra/raw_xml_stream.hpp>
#include <larra/stream.hpp>
#include <utempl/utils.hpp>

namespace larra::xmpp {

constexpr std::string_view kDoc = "<doc></doc>\n<doc2></doc2>\n<doc3/>";

constexpr std::string_view kDoc2 = "<doc></doc>\n<doc2></doc2>";

constexpr std::string_view kDoc3 =
    "<stream:features><mechanisms "
    "xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>PLAIN</mechanism><mechanism>SCRAM-SHA-256</mechanism><mechanism>X-OAUTH2</"
    "mechanism></mechanisms><register xmlns='http://jabber.org/features/iq-register'/></stream:features>";

constexpr std::string_view kDoc4 =
    R"(<?xml version='1.0'?><stream:stream id='68321991947053239' version='1.0' xml:lang='en' xmlns:stream='http://etherx.jabber.org/streams' to='test1@localhost' from='localhost' xmlns='jabber:client'>)";

TEST(RawXmlStream, ReadByOne) {
  boost::asio::io_context context;
  bool error{};

  boost::asio::co_spawn(
      context,
      // NOLINTNEXTLINE: Safe
      [&] -> boost::asio::awaitable<void> {
        RawXmlStream stream{impl::MockSocket{context.get_executor(), 1}};
        stream.AddReceivedData(kDoc);
        try {
          auto doc = co_await stream.Read();
          auto node = doc->get_root_node();
          EXPECT_EQ(node->get_name(), std::string_view{"doc"});
          EXPECT_FALSE(node->has_child_text());
          auto doc2 = co_await stream.Read();
          auto node2 = doc2->get_root_node();
          EXPECT_EQ(node2->get_name(), std::string_view{"doc2"});
          EXPECT_FALSE(node2->has_child_text());

        } catch(const std::exception& err) {
          SPDLOG_ERROR("{}", err.what());
          error = true;
        }
      },
      boost::asio::detached);

  context.run();
  EXPECT_FALSE(error);
}

TEST(RawXmlStream, ReadAll) {
  boost::asio::io_context context;
  bool error{};
  boost::asio::co_spawn(
      context,  // NOLINTNEXTLINE: Safe
      [&] -> boost::asio::awaitable<void> {
        RawXmlStream stream{impl::MockSocket{context.get_executor(), kDoc.size()}};
        stream.AddReceivedData(kDoc);
        try {
          auto doc = co_await stream.Read();
          auto node = doc->get_root_node();
          EXPECT_EQ(node->get_name(), std::string_view{"doc"});
          EXPECT_FALSE(node->has_child_text());
          auto doc2 = co_await stream.Read();
          auto node2 = doc2->get_root_node();
          EXPECT_EQ(node2->get_name(), std::string_view{"doc2"});
          EXPECT_FALSE(node2->has_child_text());

        } catch(const std::exception& err) {
          SPDLOG_ERROR("{}", err.what());
          error = true;
        }
      },
      boost::asio::detached);
  context.run();
  EXPECT_FALSE(error);
}

TEST(RawXmlStream, ReadAllWithEnd) {
  boost::asio::io_context context;
  bool error{};
  boost::asio::co_spawn(
      context,  // NOLINTNEXTLINE: Safe
      [&] -> boost::asio::awaitable<void> {
        RawXmlStream stream{impl::MockSocket{context.get_executor(), kDoc2.size()}};
        stream.AddReceivedData(kDoc2);
        try {
          auto doc = co_await stream.Read();
          auto node = doc->get_root_node();
          EXPECT_EQ(node->get_name(), std::string_view{"doc"});
          EXPECT_FALSE(node->has_child_text());
          auto doc2 = co_await stream.Read();
          auto node2 = doc2->get_root_node();
          EXPECT_EQ(node2->get_name(), std::string_view{"doc2"});
          EXPECT_FALSE(node2->has_child_text());

        } catch(const std::exception& err) {
          SPDLOG_ERROR("{}", err.what());
          error = true;
        }
      },
      boost::asio::detached);
  context.run();
  EXPECT_FALSE(error);
}

TEST(RawXmlStream, ReadFeatures) {
  boost::asio::io_context context;
  bool error{};
  boost::asio::co_spawn(
      context,  // NOLINTNEXTLINE: Safe
      [&] -> boost::asio::awaitable<void> {
        RawXmlStream stream{impl::MockSocket{context.get_executor(), kDoc3.size()}};
        stream.AddReceivedData(kDoc3);
        try {
          auto features = co_await stream.template Read<StreamFeatures>();
        } catch(const std::exception& err) {
          SPDLOG_ERROR("{}", err.what());
          error = true;
        }
      },
      boost::asio::detached);
  context.run();
  EXPECT_FALSE(error);
}

struct SomeStruct {
  static constexpr auto kDefaultName = "some";
  static constexpr auto kDefaultNamespace = "namespace";
  static constexpr auto kPrefix = "prefix";
  friend auto operator<<(xmlpp::Element* node, const SomeStruct&) {
    node->add_child_text("text");
  }
};

TEST(RawXmlStream, Write) {
  boost::asio::io_context context;
  bool error{};
  boost::asio::co_spawn(
      context,  // NOLINTNEXTLINE: Safe
      [&] -> boost::asio::awaitable<void> {
        RawXmlStream stream1{impl::MockSocket{context.get_executor()}};
        auto stream = std::move(stream1);
        try {
          co_await stream.Send(SomeStruct{});
          EXPECT_EQ(stream.GetSentData(), std::string_view{"<prefix:some xmlns:prefix=\"namespace\">text</prefix:some>"});
        } catch(const std::exception& err) {
          SPDLOG_ERROR("{}", err.what());
          error = true;
        }
      },
      boost::asio::detached);
  context.run();
  EXPECT_FALSE(error);
}

TEST(RawXmlStream, ReadOneByOne) {
  boost::asio::io_context context;
  bool error{};
  boost::asio::co_spawn(
      context,
      // NOLINTNEXTLINE: Safe
      [&] -> boost::asio::awaitable<void> {
        RawXmlStream stream{impl::MockSocket{context.get_executor(), 1}};
        stream.AddReceivedData(kDoc4);
        try {
          auto doc = (co_await stream.ReadOne(), co_await stream.ReadOne());
          auto node = doc->get_root_node();
          EXPECT_TRUE(node);
          if(!node) {
            co_return;
          }
          auto stream = ServerToUserStream::Parse(node);
        } catch(const std::exception& err) {
          SPDLOG_ERROR("{}", err.what());
          error = true;
        }
      },
      boost::asio::detached);

  context.run();
  EXPECT_FALSE(error);
}

}  // namespace larra::xmpp