/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at https://www.qt.io/contact-us.
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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.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
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** $QT_END_LICENSE$
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****************************************************************************/

#include "qnetworkproxy.h"

#include <QtCore/QJniEnvironment>
#include <QtCore/QJniObject>
#include <QtCore/private/qjnihelpers_p.h>

#ifndef QT_NO_NETWORKPROXY

QT_BEGIN_NAMESPACE

struct ProxyInfoObject
{
public:
    ProxyInfoObject();
    ~ProxyInfoObject();
};

Q_GLOBAL_STATIC(ProxyInfoObject, proxyInfoInstance)

static const char networkClass[] = "org/qtproject/qt/android/network/QtNetwork";

ProxyInfoObject::ProxyInfoObject()
{
    QJniObject::callStaticMethod<void>(networkClass,
                                       "registerReceiver",
                                       "(Landroid/content/Context;)V",
                                       QtAndroidPrivate::context());
}

ProxyInfoObject::~ProxyInfoObject()
{
    QJniObject::callStaticMethod<void>(networkClass,
                                       "unregisterReceiver",
                                       "(Landroid/content/Context;)V",
                                       QtAndroidPrivate::context());
}

QList<QNetworkProxy> QNetworkProxyFactory::systemProxyForQuery(const QNetworkProxyQuery &query)
{
    QList<QNetworkProxy> proxyList;
    if (!proxyInfoInstance)
        return proxyList;

    QJniObject proxyInfo = QJniObject::callStaticObjectMethod(networkClass,
                                      "getProxyInfo",
                                      "(Landroid/content/Context;)Landroid/net/ProxyInfo;",
                                      QtAndroidPrivate::context());
    if (proxyInfo.isValid()) {
        QJniObject exclusionList = proxyInfo.callObjectMethod("getExclusionList",
                                                              "()[Ljava/lang/String;");
        bool exclude = false;
        if (exclusionList.isValid()) {
            jobjectArray listObject = static_cast<jobjectArray>(exclusionList.object());
            QJniEnvironment env;
            QJniObject entry;
            const int size = env->GetArrayLength(listObject);
            QUrl host = QUrl(query.url().host());
            for (int i = 0; i < size; ++i) {
                entry = env->GetObjectArrayElement(listObject, i);
                if (host.matches(QUrl(entry.toString()), QUrl::RemoveScheme)) {
                    exclude = true;
                    break;
                }
            }
        }
        if (!exclude) {
            QJniObject hostName = proxyInfo.callObjectMethod<jstring>("getHost");
            const int port = proxyInfo.callMethod<jint>("getPort");
            QNetworkProxy proxy(QNetworkProxy::HttpProxy, hostName.toString(), port);
            proxyList << proxy;
        }
    }
    if (proxyList.isEmpty())
        proxyList << QNetworkProxy::NoProxy;

    return proxyList;
}

QT_END_NAMESPACE

#endif