/******************************************************************************
 * This program generates random bytes.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

#define NDEBUG

#include "Utils.hpp"
#include <clocale>
#include <cmath>
#include <codecvt>
#include <ctime>
#include <iostream>
#include <string>

std::locale utf8loc(std::locale(), new std::codecvt_utf8<wchar_t>);
using namespace std;

int main(int argc, char **argv) {
    setlocale(LC_ALL, "en_US.UTF-8");
    wcout.imbue(utf8loc);
    wcin.imbue(utf8loc);

    if (argc != 4) {
        wcout << L"Syntax: " << Utils::UTF8_to_wstring(argv[0]) << L" min max count" << endl;
        exit(1);
    }
    int min = Utils::stoiWithDefault(Utils::UTF8_to_wstring(argv[1]), 0);
    int max = Utils::stoiWithDefault(Utils::UTF8_to_wstring(argv[2]), 0);
    int count = Utils::stoiWithDefault(Utils::UTF8_to_wstring(argv[3]), 0);
    int diff = max - min + 1;

    precondition(min >= 0 && min <= 255, "min >= 0 && min <= 255");
    precondition(max >= 0 && max <= 255, "max >= 0 && max <= 255");
    precondition(max > min, "max > min");
    srand(time(0));
    unsigned char b;
    for (int i = 0; i < count; ++i) {
        b = (unsigned char)(min + int(diff * (rand()/(RAND_MAX + 1.0))));
        cout.put(b);
    }
    cout << flush;
    return 0;
}