diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60f6b30..8fe05c4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 2.9)
 
 project(store)
 
@@ -10,7 +10,7 @@ else()
   message(STATUS "ccache was not found.")
 endif(CCACHE_FOUND)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wunused-parameter -g")
 
 set(BUILD_TESTING OFF CACHE INTERNAL "")
diff --git a/include/orders.hpp b/include/orders.hpp
index 65b6555..ccc503b 100644
--- a/include/orders.hpp
+++ b/include/orders.hpp
@@ -4,9 +4,22 @@
 #include <future>
 #include <json.hpp>
 
-class orders : public json {
+struct order {
+  std::string name;
+  std::string address;
+  std::string phone;
+  std::string email;
+  int id;
+};
+
+inline void to_json(json &, const order &order);
+inline void from_json(const json &, order &order);
+
+class orders {
+  std::vector<order> data;
   const with_data_directory &data_directory;
   const fs::path &get_path();
+  void sort();
 
 public:
   void write();
diff --git a/src/orders.cpp b/src/orders.cpp
index 833f26d..36e8fba 100644
--- a/src/orders.cpp
+++ b/src/orders.cpp
@@ -2,15 +2,60 @@
 #include <iostream>
 #include <orders.hpp>
 
+void from_json(const json &j, order &order) {
+  j.at("name").get_to(order.name);
+  j.at("address").get_to(order.address);
+  j.at("phone").get_to(order.phone);
+  j.at("email").get_to(order.email);
+  j.at("id").get_to(order.id);
+}
+
+void to_json(nlohmann::json &j, const order &order) {
+  j = json{{"name", order.name},
+           {"address", order.address},
+           {"phone", order.phone},
+           {"email", order.email},
+           {"id", order.id}};
+}
+
 void orders::load() {
   try {
+    json j;
     std::fstream f(get_path());
-    f >> *this;
+    f >> j;
+    j.get_to(data);
   } catch (const std::exception &e) {
     std::cerr << e.what() << std::endl;
   }
 }
 
+void orders::sort() {
+  // std::cout << "sorting..." << std::endl;
+  // std::vector<json> vec;
+  // vec.reserve(data.size());
+  // for (auto &el : *this) {
+  //   vec.push_back(el);
+  // }
+
+
+  // std::stable_sort(vec.begin(), vec.end(), [](const auto &a, const auto &b) {
+  //   int aid = a["id"];
+  //   int bid = b["id"];
+  //   if (aid > bid) {
+  //     return 1;
+  //   }
+  //   if (aid < bid) {
+  //     return -1;
+  //   }
+  //   return 0;
+  // });
+
+  // clear();
+  // for (const auto &json : vec) {
+  //   push_back(json);
+  // }
+}
+
 const fs::path &orders::get_path() {
   static fs::path orders_json;
   if (orders_json.empty())
@@ -18,8 +63,7 @@ const fs::path &orders::get_path() {
   return orders_json;
 }
 
-orders::orders(const with_data_directory &dir)
-    : json(json::array()), data_directory(dir) {
+orders::orders(const with_data_directory &dir) : data_directory(dir) {
   if (fs::exists(get_path())) {
     load();
   } else {
@@ -30,7 +74,8 @@ orders::orders(const with_data_directory &dir)
 void orders::write() {
   try {
     std::ofstream of(get_path());
-    of << *this;
+    json j{data};
+    of << j;
 
   } catch (const std::exception &e) {
     std::cerr << e.what() << std::endl;
@@ -39,7 +84,37 @@ void orders::write() {
 
 orders::~orders() { write(); }
 
+auto max_element(
+    json::iterator begin, json::iterator end,
+    std::function<bool(const json::iterator &, const json::iterator &)> cmp) {
+  auto largest = begin;
+  if (begin == end)
+    return end;
+  for (; begin != end; begin++)
+    if (cmp(largest, begin))
+      largest = begin;
+
+  return largest;
+}
+
 void orders::push(json data) {
-  data["id"] = std::to_string(size() + 1);
-  push_back(data);
+  // int id = 0;
+  // if (size() > 0) {
+  //   const auto res =
+  //       max_element(begin(), end(), [](const json &a, const json &b) {
+  //         std::cout << "max_element " << a["id"] << b["id"] << std::endl;
+  //         std::cout << a["id"] << std::endl;
+  //         std::cout << b["id"] << std::endl;
+  //         return a["id"] < b["id"];
+  //       });
+  //   id = (*res)["id"];
+  // }
+  // std::cout << "--\n" << id << std::endl;
+  // data["id"] = id + 1;
+  // std::cout << data["id"] << std::endl;
+  order o;
+  data["id"] = 0;
+  data.get_to(o);
+  std::cout << data << std::endl;
+  data.push_back(o);
 }
\ No newline at end of file
diff --git a/src/store.cpp b/src/store.cpp
index dac8464..82418f0 100644
--- a/src/store.cpp
+++ b/src/store.cpp
@@ -50,9 +50,16 @@ int Application::run() {
 
   http_server.resource["^/orders/?$"]["GET"] =
       [&](std::shared_ptr<HttpServer::Response> response, ...) {
-        response->write(Status::success_ok, orders.dump(),
+        response->write(Status::success_ok, json({}).dump(),
                         {header_access_control, header_application_data});
       };
+  http_server.resource["^/stop/?$"]["PUT"] =
+      [&](std::shared_ptr<HttpServer::Response> response, ...) {
+        { response->write("stopping"); }
+        http_server.stop();
+        if (https_server)
+          https_server->stop();
+      };
 
   http_server.resource["^/orders/?$"]["PUT"] =
       [&](std::shared_ptr<HttpServer::Response> response,
@@ -93,6 +100,11 @@ int Application::run() {
                         {header_access_control, header_application_data});
       };
 
+  http_server.on_error = [](std::shared_ptr<HttpServer::Request> request,
+                            const SimpleWeb::error_code &ec) {
+    std::cout << ec.message() << ", " << ec.category().name() << std::endl;
+  };
+
   servers.emplace_back([&]() { http_server.start(web_server_started); });
 
   for (auto &server : servers) {