/****************************************************************************
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the QtNetwork module of the Qt Toolkit.
**
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** Foundation and appearing in the file LICENSE.GPL included in the
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****************************************************************************/

#include "qhttpnetworkheader_p.h"

#ifndef QT_NO_HTTP

QT_BEGIN_NAMESPACE

QHttpNetworkHeaderPrivate::QHttpNetworkHeaderPrivate(const QUrl &newUrl)
    :url(newUrl)
{
}

QHttpNetworkHeaderPrivate::QHttpNetworkHeaderPrivate(const QHttpNetworkHeaderPrivate &other)
    :QSharedData(other)
{
    url = other.url;
    fields = other.fields;
}

qint64 QHttpNetworkHeaderPrivate::contentLength() const
{
    bool ok = false;
    // We are not using the headerField() method here because servers might send us multiple content-length
    // headers which is crap (see QTBUG-15311). Therefore just take the first content-length header field.
    QByteArray value;
    QList<QPair<QByteArray, QByteArray> >::ConstIterator it = fields.constBegin(),
                                                        end = fields.constEnd();
    for ( ; it != end; ++it)
        if (qstricmp("content-length", it->first) == 0) {
            value = it->second;
            break;
        }

    qint64 length = value.toULongLong(&ok);
    if (ok)
        return length;
    return -1; // the header field is not set
}

void QHttpNetworkHeaderPrivate::setContentLength(qint64 length)
{
    setHeaderField("Content-Length", QByteArray::number(length));
}

QByteArray QHttpNetworkHeaderPrivate::headerField(const QByteArray &name, const QByteArray &defaultValue) const
{
    QList<QByteArray> allValues = headerFieldValues(name);
    if (allValues.isEmpty())
        return defaultValue;

    QByteArray result;
    bool first = true;
    foreach (const QByteArray &value, allValues) {
        if (!first)
            result += ", ";
        first = false;
        result += value;
    }
    return result;
}

QList<QByteArray> QHttpNetworkHeaderPrivate::headerFieldValues(const QByteArray &name) const
{
    QList<QByteArray> result;
    QList<QPair<QByteArray, QByteArray> >::ConstIterator it = fields.constBegin(),
                                                        end = fields.constEnd();
    for ( ; it != end; ++it)
        if (qstricmp(name.constData(), it->first) == 0)
            result += it->second;

    return result;
}

void QHttpNetworkHeaderPrivate::setHeaderField(const QByteArray &name, const QByteArray &data)
{
    QList<QPair<QByteArray, QByteArray> >::Iterator it = fields.begin();
    while (it != fields.end()) {
        if (qstricmp(name.constData(), it->first) == 0)
            it = fields.erase(it);
        else
            ++it;
    }
    fields.append(qMakePair(name, data));
}

bool QHttpNetworkHeaderPrivate::operator==(const QHttpNetworkHeaderPrivate &other) const
{
   return (url == other.url);
}


QT_END_NAMESPACE

#endif