/* Copyright (C) 2014
 * swift Project Community / Contributors
 *
 * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
 * including this file, may be copied, modified, propagated, or distributed except according to the terms
 * contained in the LICENSE file.
 */

#include "blackmisc/identifier.h"

#include <QCoreApplication>
#include <QDBusConnection>
#include <QHostInfo>

namespace BlackMisc
{
    CIdentifier::CIdentifier(const QString &name)
        : m_name(name.trimmed()),
          m_machineIdBase64(QDBusConnection::localMachineId().toBase64()),
          m_machineName(QHostInfo::localHostName()),
          m_processName(QCoreApplication::applicationName()),
          m_processId(QCoreApplication::applicationPid())
    { }

    CIdentifier CIdentifier::anonymous()
    {
        static CIdentifier id;
        if (id.m_processId)
        {
            id.m_processId = 0;
            id.m_processName = "";
            id.m_machineName = "";
            id.m_machineIdBase64 = "";
        }
        return id;
    }

    QUuid CIdentifier::toUuid() const
    {
        static const QUuid ns = QUuid::createUuid();
        QByteArray baseData;
        baseData.append(getMachineId());
        baseData.append(reinterpret_cast<const char *>(&m_processId), sizeof(m_processId));
        baseData.append(reinterpret_cast<const char *>(&m_timestampMSecsSinceEpoch), sizeof(m_timestampMSecsSinceEpoch));
        baseData.append(getName());
        return QUuid::createUuidV5(ns, baseData);
    }

    QByteArray CIdentifier::getMachineId() const
    {
        return QByteArray::fromBase64(m_machineIdBase64.toLocal8Bit());
    }

    bool CIdentifier::isFromLocalMachine() const
    {
        return QDBusConnection::localMachineId() == getMachineId();
    }

    bool CIdentifier::isFromSameProcess() const
    {
        return QCoreApplication::applicationPid() == getProcessId() && isFromLocalMachine();
    }

    bool CIdentifier::isFromSameProcessName() const
    {
        return QCoreApplication::applicationName() == getProcessName();
    }

    QString CIdentifier::convertToQString(bool i18n) const
    {
        Q_UNUSED(i18n);
        QString s(m_name);
        s.append(" ").append(m_machineIdBase64);
        s.append(" ").append(m_machineName);
        s.append(" ").append(QString::number(m_processId));
        s.append(" ").append(m_processName);
        return s;
    }

    CVariant CIdentifier::propertyByIndex(const BlackMisc::CPropertyIndex &index) const
    {
        if (index.isMyself()) { return CVariant::from(*this); }

        ColumnIndex i = index.frontCasted<ColumnIndex>();
        if (ITimestampBased::canHandleIndex(index)) { return ITimestampBased::propertyByIndex(index); }

        switch (i)
        {
        case IndexName:
            return CVariant::fromValue(m_name);
        case IndexMachineIdBase64:
            return CVariant::fromValue(m_machineIdBase64);
        case IndexMachineName:
            return CVariant::fromValue(getMachineName());
        case IndexMachineId:
            return CVariant::fromValue(getMachineId());
        case IndexProcessId:
            return CVariant::fromValue(m_processId);
        case IndexProcessName:
            return CVariant::fromValue(m_processName);
        case IndexIsFromLocalMachine:
            return CVariant::fromValue(isFromLocalMachine());
        case IndexIsFromSameProcess:
            return CVariant::fromValue(isFromSameProcess());
        case IndexIsFromSameProcessName:
            return CVariant::fromValue(isFromSameProcessName());
        default:
            return CValueObject::propertyByIndex(index);
        }
    }

    void CIdentifier::setPropertyByIndex(const CPropertyIndex &index, const CVariant &variant)
    {
        CValueObject::setPropertyByIndex(index, variant);
    }

} // ns