#include <string>
#include <cstring>
#include <iostream>
#include <cstdio>
#include <fstream>
#include "json.hpp"

using namespace std;
using json = nlohmann::json;

class Account
{
    private:
        string FIO;
        long INN;
        string password;
    public:
        Account(string FIO, long INN, string password) {
            this->FIO = FIO;
            this->INN = INN;
            this->password = password;
        }
        ~Account(){
            return;
        }

        json serialize() {
            json tmp;

            tmp["FIO"] = this->FIO;
            tmp["INN"] = this->INN;
            tmp["password"] = this->password;

            return tmp;
        }
};


void dropOneObj() {
    fstream myfile1 ("test.json", ios_base::ate|ios_base::in|ios_base::binary );
    if (myfile1.is_open())
    {
        Account user1 = Account("Раннев Дмитрий", 13246985, "пароль123");
        json obj1 = user1.serialize();

        myfile1.seekg(-1, ios_base::end);
        myfile1 << "," << obj1;

        myfile1.close();
    }
}

void dropAll() {
    ofstream myfile1 ("test.json");
    if (myfile1.is_open())
    {
        Account user1 = Account("Раннев Дмитрий", 13246985, "пароль123");
        Account user2 = Account("Лодж Анастасия", 13246985, "пароль123");
        Account user3 = Account("Коморов Владимир", 13246985, "пароль123");
        Account user4 = Account("Альберт Ошанский", 13246985, "пароль123");

        json obj1 = user1.serialize();
        json obj2 = user2.serialize();
        json obj3 = user3.serialize();
        json obj4 = user4.serialize();

        json arr;

        arr.push_back(obj1);
        arr.push_back(obj2);
        arr.push_back(obj3);
        arr.push_back(obj4);

        myfile1 << arr;

        myfile1.close();
    }
}


int main()
{


    //dropAll();

    dropOneObj();

    json a;

    ifstream myfile ("test.json");
    if (myfile.is_open()) { myfile >> a; }
    myfile.close();

    cout << a.dump() << endl;


return 0;
}