/******************************************************************************
 * This program computes the roots of quadratic equations
 * of the form Ax^2 + Bx + C = 0
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

#undef NDEBUG

#include "Utils.hpp"
#include <clocale>
#include <cmath>
#include <codecvt>
#include <fmt/format.h>
#include <fmt/xchar.h>
#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 << fmt::format(L"Syntax: {0:s} a b c", Utils::UTF8_to_wstring(argv[0])) << endl;
        exit(1);
    }
    double const A = Utils::stodWithDefault(Utils::UTF8_to_wstring(argv[1]), 0);
    double const B = Utils::stodWithDefault(Utils::UTF8_to_wstring(argv[2]), 0);
    double const C = Utils::stodWithDefault(Utils::UTF8_to_wstring(argv[3]), 0);
    double discriminant = B * B - 4. * A * C;
    discriminant = sqrt(discriminant);
    double root1 = (-B + discriminant) / (2. * A);
    double root2 = (-B - discriminant) / (2. * A);
    wcout << L"root #1: " << root1 << endl;
    wcout << L"root #2: " << root2 << endl;
    return 0;
}