#include "settings.h"
#include <QMutex>
#include <QMutexLocker>
#include <QDir>
#include <QFile>
#include <QDebug>
#include <QJsonDocument>

Settings *Settings::INSTANCE = nullptr;

Settings::Settings(QObject *parent)
    : QObject{parent}
{
    QString path = QDir::currentPath() + "/../conf/";
    QFile pf(path + "preference.json");
    if (!pf.open(QIODevice::ReadOnly)) {
        qFatal() << "Can not open preference config file: " << pf.fileName();
    } else {
        QJsonParseError err;
        QJsonDocument jd = QJsonDocument::fromJson(pf.readAll(), &err);
        if (err.error != QJsonParseError::ParseError::NoError) {
            qFatal() << "Json parse error: " << err.errorString() << "From file: " << pf.fileName();
        } else m_pref = jd.object();
    }
    pf.close();
    QFile sf(path + "system.json");
    if (!sf.open(QIODevice::ReadOnly)) {
        qFatal() << "Can not open system config file: " << sf.fileName();
    } else {
        QJsonParseError err;
        QJsonDocument jd = QJsonDocument::fromJson(sf.readAll(), &err);
        if (err.error != QJsonParseError::ParseError::NoError) {
            qFatal() << "Json parse error: " << err.errorString() << "From file: " << sf.fileName();
        } else m_system = jd.object();
    }
    sf.close();
}

Settings* Settings::Instance() {
    static QMutex mutex;
    if (!INSTANCE) {
        QMutexLocker locker(&mutex);
        if (!INSTANCE) {
            INSTANCE = new Settings();
        }
    }
    return INSTANCE;
}