/******************************************************************************
 * This program randomizes an array of integers as in
 * shuffling a deck of cards.
 * 
 * Copyright © 2021 Richard Lesh.  All rights reserved.
 *****************************************************************************/

#define NDEBUG

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

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

void shuffle(vector<int> &list) noexcept {
    int const size = list.size();
    for (auto i = 0; i < size - 1; ++i) {
        int const remaining = size - i;
        int const pos = i + int(remaining * (rand()/(RAND_MAX + 1.0)));
        int const temp = list[i];
        list[i] = list[pos];
        list[pos] = temp;
    }
}

static wstring const suits = L"\u2665\u2666\u2667\u2664";
static wstring const values = L"A23456789TJQK";

wstring convertInt2Card(int i) noexcept {
    precondition(i >= 0 && i < 52, "i >= 0 && i < 52");
    int const suit = i / 13;
    int const value = i % 13;
    wstring const suitStr = suits.substr(suit, suit + 1 - suit);
    wstring valueStr = values.substr(value, value + 1 - value);
    if (valueStr == L"T") {
        valueStr = L"10";
    }
    return valueStr + suitStr;
}

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

    vector<int> deck = {};
    for (auto i = 0; i <= 51; ++i) {
        Utils::push(deck, i);
    }

    shuffle(deck);

    for (auto i = 0; i <= 51; ++i) {
        wcout << convertInt2Card(deck[i]) << endl;
    }
    return 0;
}