simple-store/src/orders.cpp

#include <fstream>
#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 >> 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())
    orders_json = data_directory.get_path() / "orders.json";
  return orders_json;
}

orders::orders(const with_data_directory &dir) : data_directory(dir) {
  if (fs::exists(get_path())) {
    load();
  } else {
    write();
  }
}

void orders::write() {
  try {
    std::ofstream of(get_path());
    json j{data};
    of << j;

  } catch (const std::exception &e) {
    std::cerr << e.what() << std::endl;
  }
}

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) {
  // 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);
}