#pragma once
#include <boost/log/trivial.hpp>

#include <regex>
#include <boost/json.hpp>
#include <mysqlx/xdevapi.h>
#include <mysqlx/common/api.h>

#include <boost/uuid.hpp>
#include "IExecutor.h"
#include "../DAO/IUserDAO.h"
#include "../DAO/IAuthDAO.h"
#include "../helpers/helpers.h"
#include "../exceptions/session_exception.h"

namespace uad
{
template <class Body, class Allocator, class ResponseType>
class AuthLoginExecutor : public IExecutor<Body, Allocator, ResponseType>
{
  mysqlx::Session& session_;
  const std::shared_ptr<IUserDAO>& user_dao_;
  const std::shared_ptr<IAuthDAO>& auth_dao_;

public:
  AuthLoginExecutor(mysqlx::Session& session,
                           const std::shared_ptr<IUserDAO>& user_dao,
                           const std::shared_ptr<IAuthDAO>& auth_dao)
    : session_(session), user_dao_(user_dao), auth_dao_(auth_dao)
  {
  }

  boost::beast::http::response<ResponseType> operator ()(
    boost::beast::http::request<Body, boost::beast::http::basic_fields<Allocator>>&& req
  ) override
  {
    using namespace boost;
    using namespace boost::json;
    using namespace boost::beast;
    using namespace std::string_literals;

    BOOST_LOG_TRIVIAL(info) << "POST /api/v1/Auth/Login - Request";

    const auto body = req.body();
    value req_json;

    try
    {
      req_json = json::parse(body);
    }
    catch (const system::system_error& err)
    {
      BOOST_LOG_TRIVIAL(info) << "POST /api/v1/Auth/Login - Response 400: Cannot deserialize json";
      throw session_exception(http::status::bad_request, "Cannot deserialize json");
    }


    const std::string login = req_json.as_object().at("login").as_string().c_str();
    const std::string password = req_json.as_object().at("password").as_string().c_str();

    if (login.empty() || password.empty())
    {
      BOOST_LOG_TRIVIAL(info) << "POST /api/v1/Auth/Login - Response 422: Login or password are empty";
      throw session_exception(http::status::unprocessable_entity, "Login or password are empty"s);
    }

    const std::optional<user_dto> maybe_user = user_dao_->GetByLogin(login);

    if (!maybe_user.has_value() || maybe_user.value().hashed_password != HashPassword(password))
    {
      BOOST_LOG_TRIVIAL(info) << "POST /api/v1/Auth/Login - Response 403: Incorrect login or password";
      throw session_exception(http::status::forbidden,"Incorrect login or password");
    }
    const std::string token = GenerateUUID();
    auth_dao_->Login(maybe_user.value().uuid, token);

    http::response<ResponseType> res{http::status::ok, req.version()};
    value response_body;

    response_body.emplace_object();
    response_body.as_object().emplace("token", token);

    res.body() = serialize(response_body);
    res.set(http::field::content_type, "application/json");
    res.content_length(res.body().size());

    return res;
  }
};
}