Generates json file

json_generator.cpp

#include <iostream>
#include <cmath>
#include <vector>
#include <fstream>
#include <random>

using namespace std;

int generate_a_random_number(mt19937 rng, int init_num, int last_num)
{
    uniform_int_distribution<int> d(init_num,last_num);
    return d(rng);
}

int main(int argc, char *argv[]) 
{ 
    string probel = " ";
    string tire = "-";
    string dvoet = ": ";
    string tab = "    ";
    string modelA[] = { "Horizon", "Mega", "Rushing", "Stylish", "PRO-MX", "Hyper", "Fast", "Furious", "Cool", "Fantastic", "Never-Ending", "Inevitable", "Instant", "Durable", "Mysterious", "Special", "Secret", "Amazing", "Absolute", "OMEGA" };
    string modelB[] = { "Rush", "Dawn", "Race", "Turbo", "Speed", "Bike", "Thug", "Dragon", "Tiger", "Wind", "Evil", "Mutant", "Bro", "Bicycle", "Rage", "Delivery", "Duck", "Goose", "Transport", "Power" };
    string modelC[] = { "RX", "TR", "BB", "R", "GRA", "SDI", "DR", "B", "RED", "LO", "A", "B", "C", "D", "E", "F", "S", "SR", "SSR", "UR" };
    int number_of_items = 64;
    string filename = "database";
    string directory = argv[0];
    directory.erase(directory.find_last_of('\\')+1);
    if (argc > 2)
    {
        filename = (string)argv[1];
        number_of_items = (uintptr_t)argv[2];
    }
    filename = directory + filename + ".json";
    ofstream output(filename, ios::trunc);

    seed_seq seq{time(0)};
    vector<std::uint32_t> seeds(number_of_items*20);
    seq.generate(seeds.begin(), seeds.end());

    output << "{\n" + tab;
    output << "\"items\": [\n";
    for(int i = 0; i < number_of_items; i++)
    {
        output << tab + tab + "{\n";

        output << tab + tab + tab;
        output << "\"id\": ";
        output << to_string(i) << ",\n";

        int a = seeds[i] % 20;
        int b = seeds[i+1] % 20;
        int c = seeds[i+2] % 20;
        output << tab + tab + tab;
        output << "\"model\": \"";
        int d = seeds[i+3] % 99;
        output <<  modelA[a] + probel + modelB[b] + probel + modelC[c] + to_string(d);
        output << "\",\n";

        int typ = seeds[i+4] % 5;
        output << tab + tab + tab;
        output << "\"ttype\": ";
        output << to_string(typ) << ",\n";

        int wheeln = seeds[i+5] % 4 + 1;
        output << tab + tab + tab;
        output << "\"number_of_wheels\": ";
        output << to_string(wheeln) << ",\n";

        int wheels = seeds[i+6] % 20 + 1;
        output << tab + tab + tab;
        output << "\"wheel_size\": ";
        output << to_string(wheels) << ",\n";

        int seatn = 1;
        if (typ == 3)
        {
            seatn = seeds[i+7] % 5 + 1;
        } else if (typ == 4)
        {
            seatn = 0;
        }
        output << tab + tab + tab;
        output << "\"number_of_seats\": ";
        output << to_string(seatn) << ",\n";

        int price = (seeds[i+8] % 20 + 1) * 50;
        output << tab + tab + tab;
        output << "\"price_to_rent\": ";
        output << to_string(price) << ",\n";

        int is_rent = seeds[i+9] % 2;
        string is_rented = is_rent == 0 ? "false" : "true";
        output << tab + tab + tab;
        output << "\"is_rented\": ";
        output << is_rented << "\n";

        output << tab + tab << "}";
        if (i != number_of_items-1) {
            output << ",";
        }
        output << "\n";
    }
    output << tab << "]\n}";
    output.close();
    return 0;
}