#include "robot_name.h"

#include <algorithm>


namespace robot_name {

using namespace std;


namespace {

const size_t alpha_part_size = 2;
const size_t digit_part_size = 3;

string random_string(size_t size, char from_char, char to_char)
{
    auto random_char = [from_char, to_char]() -> char {
        return from_char + rand() % (to_char - from_char + 1);
    };

    string result(size, 0);
    generate_n(result.begin(), size, random_char);

    return result;
};

}


robot::robot()
{
    reset();
}

void robot::reset()
{
    name_ = random_string(alpha_part_size, 'A', 'Z')
          + random_string(digit_part_size, '0', '9');
}

const name_t &robot::name() const
{
    return name_;
}

}