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/**
 * Some notes about the code:
 *
 * ** It is assumed that the system proxies are for url based requests
 *  ie. HTTP/HTTPS based.
 */

#include <QtNetwork/qnetworkproxy.h>

#ifndef QT_NO_NETWORKPROXY


#include <QtCore/qurl.h>
#include <QtNetwork/qnetworkconfiguration.h>

#include <bps/netstatus.h>
#include <errno.h>


QT_BEGIN_NAMESPACE

QList<QNetworkProxy> QNetworkProxyFactory::systemProxyForQuery(const QNetworkProxyQuery &query)
{
    QNetworkProxy proxy;

    if (query.queryType() != QNetworkProxyQuery::UrlRequest) {
        qWarning("Unsupported query type: %d", query.queryType());
        return QList<QNetworkProxy>() << QNetworkProxy(QNetworkProxy::NoProxy);
    }

    QUrl url  = query.url();

    if (!url.isValid()) {
        qWarning("Invalid URL: %s", qPrintable(url.toString()));
        return QList<QNetworkProxy>() << QNetworkProxy(QNetworkProxy::NoProxy);
    }

    netstatus_proxy_details_t details;
    memset(&details, 0, sizeof(netstatus_proxy_details_t));
    if (netstatus_get_proxy_details(&details) != BPS_SUCCESS) {
        qWarning("netstatus_get_proxy_details failed! errno: %d", errno);
        return QList<QNetworkProxy>() << QNetworkProxy(QNetworkProxy::NoProxy);
    }

    if (details.http_proxy_host == NULL) { // No proxy
        netstatus_free_proxy_details(&details);
        return QList<QNetworkProxy>() << QNetworkProxy(QNetworkProxy::NoProxy);
    }

    QString protocol = query.protocolTag();
    if (protocol.startsWith(QLatin1String("http"), Qt::CaseInsensitive)) { // http, https
        proxy.setType((QNetworkProxy::HttpProxy));
    } else if (protocol == QLatin1String("ftp")) {
        proxy.setType(QNetworkProxy::FtpCachingProxy);
    } else { // assume http proxy
        qDebug("Proxy type: %s assumed to be http proxy", qPrintable(protocol));
        proxy.setType((QNetworkProxy::HttpProxy));
    }

    // Set host
    // Note: ftp and https proxy type fields *are* obsolete.
    // The user interface allows only one host/port which gets duplicated
    // to all proxy type fields.
    proxy.setHostName(QString::fromUtf8(details.http_proxy_host));

    // Set port
    proxy.setPort(details.http_proxy_port);

    // Set username
    if (details.http_proxy_login_user)
        proxy.setUser(QString::fromUtf8(details.http_proxy_login_user));

    // Set password
    if (details.http_proxy_login_password)
        proxy.setPassword(QString::fromUtf8(details.http_proxy_login_password));

    netstatus_free_proxy_details(&details);

    return QList<QNetworkProxy>() << proxy;
}

QT_END_NAMESPACE

#endif