#include <db/MetaTable.h>

// qt
#include <QDateTime>
#include <QUuid>
#include <QNetworkInterface>
#include <QCryptographicHash>

MetaTable::MetaTable(QObject* parent)
	: DBManager(parent)
{
	setTable("meta");
	createTable(QStringList()<<"uuid TEXT"<<"created_at TEXT");
};

QString MetaTable::getUUID() const
{
	QVector<QVariantMap> results;
	getRecords(results, QStringList() << "uuid");

	for(const auto & entry : std::as_const(results))
	{
		if(!entry["uuid"].toString().isEmpty())
		{
			return entry["uuid"].toString();
		}
	}

	// create new uuidv5 based on net adapter MAC, save to db and return
	QString hash;
	foreach(QNetworkInterface interface, QNetworkInterface::allInterfaces())
	{
		if (!(interface.flags() & QNetworkInterface::IsLoopBack))
		{
			hash = QCryptographicHash::hash(interface.hardwareAddress().toLocal8Bit(),QCryptographicHash::Sha1).toHex();
			break;
		}
	}
	const QString newUuid = QUuid::createUuidV5(QUuid(), hash).toString().mid(1, 36);
	QVariantMap map;
	map["created_at"] = QDateTime::currentDateTimeUtc().toString(Qt::ISODate);

	createRecord({{"uuid",newUuid}}, map);

	return newUuid;
}