/******************************************************************************
 * This program prints the lyrics to Farmer in the Dell
 * using a map to store the data.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

#undef NDEBUG

#include <clocale>
#include <codecvt>
#include <iostream>
#include <string>
#include <unordered_map>

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

static const unordered_map<wstring, wstring> PEOPLE = {
    {L"farmer", L"wife"},
    {L"wife", L"child"},
    {L"child", L"nurse"},
    {L"nurse", L"cow"},
    {L"cow", L"dog"},
    {L"dog", L"cat"},
    {L"cat", L"mouse"},
    {L"mouse", L"cheese"}
};

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

    wstring person = L"farmer";

    wcout << L"The famer in the dell" << endl;
    wcout << L"The famer in the dell" << endl;
    wcout << L"Hi-ho, the derry-o..." << endl;
    wcout << L"The famer in the dell" << endl;
    wcout << endl;

    while (person != L"cheese") {
        wstring const OTHER_PERSON = PEOPLE.at(person);
        wcout << L"The " << person << L" takes the " << OTHER_PERSON << endl;
        wcout << L"The " << person << L" takes the " << OTHER_PERSON << endl;
        wcout << L"Hi-ho, the derry-o..." << endl;
        wcout << L"The " << person << L" takes the " << OTHER_PERSON << endl;
        wcout << endl;
        person = OTHER_PERSON;
    }

    wcout << L"The cheese stands alone" << endl;
    wcout << L"The cheese stands alone" << endl;
    wcout << L"Hi-ho, the derry-o..." << endl;
    wcout << L"The cheese stands alone" << endl;
    return 0;
}