/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtLocation module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL3$
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
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****************************************************************************/
#include "qgeouriprovider.h"

#include <QMap>
#include <QVariant>
#include <QRandomGenerator>
#include <QSet>
#include <QString>

QT_BEGIN_NAMESPACE

QGeoUriProvider::QGeoUriProvider(
                QObject *parent,
                const QVariantMap &parameters,
                const QString &hostParameterName,
                const QString &internationalHost,
                const QString &localizedHost)
    : QObject(parent)
    , m_internationalHost(parameters.value(hostParameterName, internationalHost).toString())
    , m_localizedHost(localizedHost)
    , m_firstSubdomain(QChar::Null)
    , m_maxSubdomains(0)
{
    setCurrentHost(isInternationalNetwork() || m_localizedHost.isEmpty() ? m_internationalHost : m_localizedHost);
}

QString QGeoUriProvider::getCurrentHost() const
{
    if (m_maxSubdomains) {
        QString result(m_firstSubdomain.toLatin1() + QRandomGenerator::bounded(m_maxSubdomains));
        result += '.' + m_currentHost;
        return result;
    }
    return m_currentHost;
}

void QGeoUriProvider::setCurrentHost(const QString &host)
{
    if (host.length() > 4 && host.at(1) == QChar('-') && host.at(3) == QChar('.')) {
        QString realHost = host.right(host.length() - 4);
        m_firstSubdomain = host.at(0);
        m_maxSubdomains = host.at(2).toLatin1() - host.at(0).toLatin1() + 1;
        m_currentHost = realHost;
    } else {
        m_currentHost = host;
        m_firstSubdomain = QChar::Null;
        m_maxSubdomains = 0;
    }
}

void QGeoUriProvider::mobileCountryCodeChanged(int interface, const QString& mcc)
{
    Q_UNUSED(interface)
    Q_UNUSED(mcc)

    setCurrentHost(isInternationalNetwork() || m_localizedHost.isEmpty() ? m_internationalHost : m_localizedHost);
}

bool QGeoUriProvider::isInternationalNetwork() const
{
    return true;
}

QT_END_NAMESPACE