#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlComponent>
#include <QQmlProperty>
#include <QQuickItem>
#include <QTranslator>
#include <QDebug>

void changePin(QString pin, QQmlApplicationEngine &engine);
void gen_random(char *s, const int len);

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

    QGuiApplication app(argc, argv);


    QTranslator translator;

    qDebug() << "Im about to load: :/locales/bin/" + QLocale::system().name() + " locale!";
    if(translator.load(":/locales/bin/" + QLocale::system().name())) {
        app.installTranslator(&translator);
        qDebug() << "Loaded: " + QLocale::system().name() + " locale!";
    } else {
        qDebug() << "Unable to load translation";
    }

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    if (engine.rootObjects().isEmpty())
        return -1;

    #define PIN_LENGTH 5
    // The char array in which the random pin will be written to
    char rand_pin[PIN_LENGTH+1];
    gen_random(rand_pin, PIN_LENGTH);
    changePin(rand_pin, engine);

    return app.exec();
}

void changePin(QString pin, QQmlApplicationEngine &engine){
    QQuickItem *item = engine.rootObjects().at(0)->findChild<QQuickItem*>("pin_text");
    if (item)
        item->setProperty("pin", pin);
}

void gen_random(char *s, const int len) {
    // Initialize random generator
    srand( static_cast<unsigned>(time(NULL)));

    static const char alphanum[] =
        "0123456789"
        "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    for (int i = 0; i < len; ++i) {
        s[i] = alphanum[rand() % static_cast<int>(sizeof(alphanum) - 1)];
    }

    s[len] = 0;
}