#include <gtest/gtest.h>

#include <larra/iq.hpp>

namespace {

static constexpr auto kExpectedData = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<iq id=\"id\" type=\"get\"><some>37</some></iq>\n";
struct SomeStruct {
  int value;
  constexpr auto operator==(const SomeStruct&) const -> bool = default;
  static constexpr auto kDefaultName = "some";
  static constexpr auto Parse(xmlpp::Element* element) -> SomeStruct {
    auto node = element->get_first_child_text();
    if(!node) {
      throw std::runtime_error{"Not found value"};
    }

    return {std::stoi(node->get_content())};
  }
  friend constexpr auto operator<<(xmlpp::Element* element, const SomeStruct& self) {
    auto node = element->add_child_text(std::to_string(self.value));
    node->set_name("value");
  }
};

}  // namespace

namespace larra::xmpp {

TEST(IQ, Serialize) {
  iq::Get iq{.id = "id", .payload = SomeStruct{.value = 37}};  // NOLINT
  xmlpp::Document doc;
  Serialization<iq::Get<SomeStruct>>::Serialize(doc.create_root_node("iq"), iq);
  EXPECT_EQ(doc.write_to_string(), kExpectedData);
}

TEST(IQ, Parse) {
  iq::Get iq{.id = "id", .payload = SomeStruct{.value = 37}};  // NOLINT
  xmlpp::Document doc;
  auto node = doc.create_root_node("iq");
  using S = Serialization<iq::Get<SomeStruct>>;
  S::Serialize(node, iq);
  EXPECT_EQ(S::Parse(node), iq);
}

}  // namespace larra::xmpp