/*
  Copyright (c) 2015-2020 Laurent Montel <montel@kde.org>

  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 program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include "filterimportergmail.h"
#include "mailcommon_debug.h"
#include <QFile>
#include <QDir>
#include <QDomDocument>
#include "filter/mailfilter.h"

using namespace MailCommon;

FilterImporterGmail::FilterImporterGmail(QFile *file)
    : FilterImporterAbstract()
    , mFilterCount(0)
{
    QDomDocument doc;
    if (!loadDomElement(doc, file)) {
        return;
    }

    QDomElement filters = doc.documentElement();

    if (filters.isNull()) {
        qCDebug(MAILCOMMON_LOG) << "No filters defined";
        return;
    }
    for (QDomElement e = filters.firstChildElement(); !e.isNull(); e = e.nextSiblingElement()) {
        const QString tag = e.tagName();
        if (tag == QLatin1String("entry")) {
            qCDebug(MAILCOMMON_LOG) << " filter found !";
            parseFilters(e);
        }
    }
}

FilterImporterGmail::~FilterImporterGmail()
{
}

QString FilterImporterGmail::defaultFiltersSettingsPath()
{
    return QDir::homePath();
}

QString FilterImporterGmail::createUniqFilterName()
{
    return i18n("Gmail filter %1", ++mFilterCount);
}

void FilterImporterGmail::parseFilters(const QDomElement &e)
{
    MailCommon::MailFilter *filter = new MailCommon::MailFilter();
    filter->setAutoNaming(true);
    const QString uniqName = createUniqFilterName();
    filter->pattern()->setName(uniqName);
    filter->setToolbarName(uniqName);
    filter->setEnabled(true);
    QByteArray fieldName;
    for (QDomElement ruleFilter = e.firstChildElement();
         !ruleFilter.isNull();
         ruleFilter = ruleFilter.nextSiblingElement()) {
        const QString tagName = ruleFilter.tagName();
        if (tagName == QLatin1String("category")) {
            if (ruleFilter.hasAttribute(QStringLiteral("term"))) {
                if (ruleFilter.attribute(QStringLiteral("term")) != QLatin1String("filter")) {
                    continue;
                }
            }
        } else if (tagName == QLatin1String("apps:property")) {
            if (ruleFilter.hasAttribute(QStringLiteral("name"))) {
                const QString criteriaProperty = ruleFilter.attribute(QStringLiteral("name"));
                qCDebug(MAILCOMMON_LOG) << " ruleFilter.attribute" << criteriaProperty;
                // Criterial
                if (criteriaProperty == QLatin1String("from")) {
                    fieldName = "from";
                } else if (criteriaProperty == QLatin1String("to")) {
                    fieldName = "to";
                } else if (criteriaProperty == QLatin1String("subject")) {
                    fieldName = "subject";
                } else if (criteriaProperty == QLatin1String("hasTheWord")) {
                } else if (criteriaProperty == QLatin1String("doesNotHaveTheWord")) {
                } else if (criteriaProperty == QLatin1String("hasAttachment")) {
                    fieldName = "<size>";
                }
                //Action
                else if (criteriaProperty == QLatin1String("shouldArchive")) {
                } else if (criteriaProperty == QLatin1String("shouldMarkAsRead")) {
                } else if (criteriaProperty == QLatin1String("shouldStar")) {
                } else if (criteriaProperty == QLatin1String("label")) {
                } else if (criteriaProperty == QLatin1String("forwardTo")) {
                } else if (criteriaProperty == QLatin1String("shouldTrash")) {
                } else if (criteriaProperty == QLatin1String("neverSpam")) {
                } else {
                    qCDebug(MAILCOMMON_LOG) << " unknown item " << criteriaProperty;
                }
            }
        }
    }
    appendFilter(filter);
}
