/*
 * privacylistitem.cpp
 * Copyright (C) 2006  Remko Troncon
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 */

#include <QDomElement>
#include <QObject>

#include "privacylistitem.h"
#include "xmpp_xmlcommon.h"
#include "xmpp_jid.h"


PrivacyListItem::PrivacyListItem()
    : type_(Type::FallthroughType)
    , action_(Action::Allow)
    , message_(true)
    , presenceIn_(true)
    , presenceOut_(true)
    , iq_(true)
    , order_(0u)
{
}

PrivacyListItem::PrivacyListItem(const QDomElement& e)
{
    fromXml(e);
}

bool PrivacyListItem::isBlock() const
{
    return (type() == JidType && action() == Deny && all());
}

QString PrivacyListItem::toString() const
{
    QString act;
    if (action() == PrivacyListItem::Deny)
        act = QObject::tr("Deny");
    else
        act = QObject::tr("Allow");

    QString what;
    if (all())
        what = QObject::tr("All");
    else {
        if (message())
            what += QObject::tr("Messages,");
        if (presenceIn())
            what += QObject::tr("Presence-In,");
        if (presenceOut())
            what += QObject::tr("Presence-Out,");
        if (iq())
            what += QObject::tr("Queries,");
        what.truncate(what.length()-1);
    }

    QString txt;
    if (type() == PrivacyListItem::FallthroughType) {
        txt = QString(QObject::tr("Else %1 %2")).arg(act).arg(what);
    }
    else {
        if (type() == PrivacyListItem::JidType) {
            txt = QString(QObject::tr("If JID is '%1' then %2 %3")).arg(value()).arg(act).arg(what);
        }
        else if (type() == PrivacyListItem::GroupType) {
            txt = QString(QObject::tr("If Group is '%1' then %2 %3")).arg(value()).arg(act).arg(what);
        }
        else if (type() == PrivacyListItem::SubscriptionType) {
            txt = QString(QObject::tr("If Subscription is '%1' then %2 %3")).arg(value()).arg(act).arg(what);
        }
    }

    return txt;
}

QDomElement PrivacyListItem::toXml(QDomDocument& doc) const
{
    QDomElement item = doc.createElement("item");

    if (type_ == JidType)
        item.setAttribute("type","jid");
    else if (type_ == GroupType)
        item.setAttribute("type","group");
    else if (type_ == SubscriptionType)
        item.setAttribute("type","subscription");

    if (type_ != FallthroughType)
        item.setAttribute("value",value_);

    if (action_ == Allow)
        item.setAttribute("action","allow");
    else
        item.setAttribute("action","deny");

    item.setAttribute("order", order_);

    if (!(message_ && presenceIn_ && presenceOut_ && iq_)) {
        if (message_)
            item.appendChild(doc.createElement("message"));
        if (presenceIn_)
            item.appendChild(doc.createElement("presence-in"));
        if (presenceOut_)
            item.appendChild(doc.createElement("presence-out"));
        if (iq_)
            item.appendChild(doc.createElement("iq"));
    }

    return item;
}

void PrivacyListItem::fromXml(const QDomElement& el)
{
    //qDebug("privacy.cpp: Parsing privacy list item");
    if (el.isNull() || el.tagName() != "item") {
        qWarning("privacy.cpp: Invalid root tag for privacy list item.");
        return;
    }

    QString type = el.attribute("type");
    if (type == "jid")
        type_ = JidType;
    else if (type == "group")
        type_ = GroupType;
    else if (type == "subscription")
        type_ = SubscriptionType;
    else
        type_ = FallthroughType;

    QString value = el.attribute("value");
    value_ = value;
    if (type_ == JidType && XMPP::Jid(value_).isEmpty())
        qWarning("privacy.cpp: Invalid value for item of type 'jid'.");
    else if (type_ == GroupType && value_.isEmpty())
        qWarning("privacy.cpp: Empty value for item of type 'group'.");
    else if (type_ == SubscriptionType && value_ != "from" && value != "to" && value_ != "both" && value_ != "none")
        qWarning("privacy.cpp: Invalid value for item of type 'subscription'.");
    else if (type_ == FallthroughType && !value_.isEmpty())
        qWarning("privacy.cpp: Value given for item of fallthrough type.");

    QString action = el.attribute("action");
    if (action == "allow")
        action_ = Allow;
    else if (action == "deny")
        action_ = Deny;
    else
        qWarning("privacy.cpp: Invalid action given for item.");

    bool ok;
    order_ = el.attribute("order").toUInt(&ok);
    if (!ok)
        qWarning("privacy.cpp: Invalid order value for item.");

    if (el.hasChildNodes()) {
        message_ = !el.firstChildElement("message").isNull();
        presenceIn_ = !el.firstChildElement("presence-in").isNull();
        presenceOut_ = !el.firstChildElement("presence-out").isNull();
        iq_ = !el.firstChildElement("iq").isNull();
    }
    else {
        message_ = presenceIn_ = presenceOut_ = iq_ = true;
    }
}

PrivacyListItem PrivacyListItem::blockItem(const QString& jid)
{
    PrivacyListItem it;
    it.setType(JidType);
    it.setAction(Deny);
    it.setAll();
    it.setValue(jid);
    return it;
}
