#include <iostream>
#include <string.h>
#include "jsmn.h"

int main() {
    std::string json = "{\n"
            "    \"id\": 1,\n"
            "    \"username\": \"test\",\n"
            "    \"password\": \"password\",\n"
            "    \"role\": \"USER\"\n"
            "  }";

    jsmn_parser parser;
    jsmntok_t tokens[20];

    jsmn_init(&parser);

    int result = jsmn_parse(&parser, json.c_str(), json.length(), tokens, 20);

    std::cout << "start: " << tokens[1].start << " end: " << tokens[1].end << std::endl;

    std::string id_label = json.substr(tokens[1].start, (tokens[1].end - tokens[1].start));
    std::cout << id_label << std::endl;
    return 0;
}