/*
  Copyright (c) 2013, 2014 Montel Laurent <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, version 2, as
  published by the Free Software Foundation.

  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 "folderarchiveagentcheckcollection.h"
#include "folderarchiveaccountinfo.h"

#include <KLocale>

#include <Akonadi/CollectionFetchJob>
#include <Akonadi/CollectionCreateJob>
#include <QDate>


FolderArchiveAgentCheckCollection::FolderArchiveAgentCheckCollection(FolderArchiveAccountInfo *info, QObject *parent)
    : QObject(parent),
      mCurrentDate(QDate::currentDate()),
      mInfo(info)
{
}

FolderArchiveAgentCheckCollection::~FolderArchiveAgentCheckCollection()
{
}

void FolderArchiveAgentCheckCollection::start()
{
    Akonadi::Collection col(mInfo->archiveTopLevel());
#if 0
    if (mInfo->keepExistingStructure()) {
        Akonadi::CollectionFetchJob *job = new Akonadi::CollectionFetchJob(col, Akonadi::CollectionFetchJob::Recursive);
        connect(job, SIGNAL(result(KJob*)), this, SLOT(slotInitialCollectionFetchingDone(KJob*)) );
    } else {
#endif
        Akonadi::CollectionFetchJob *job = new Akonadi::CollectionFetchJob(col, Akonadi::CollectionFetchJob::FirstLevel);
        connect(job, SIGNAL(result(KJob*)), this, SLOT(slotInitialCollectionFetchingFirstLevelDone(KJob*)) );
#if 0
    }
#endif
}

#if 0
void FolderArchiveAgentCheckCollection::slotInitialCollectionFetchingDone(KJob *job)
{
#if 0
    if ( job->error() ) {
        qWarning() << job->errorString();
        Q_EMIT checkFailed(QString());
        return;
    }

    //TODO
    Akonadi::CollectionFetchJob *fetchJob = qobject_cast<Akonadi::CollectionFetchJob*>( job );

    foreach ( const Akonadi::Collection &collection, fetchJob->collections() ) {

    }
#endif
}
#endif

void FolderArchiveAgentCheckCollection::slotInitialCollectionFetchingFirstLevelDone(KJob *job)
{
    if ( job->error() ) {
        qWarning() << job->errorString();
        Q_EMIT checkFailed(i18n("Cannot fetch collection. %1", job->errorString()));
        return;
    }

    QString folderName;
    switch(mInfo->folderArchiveType()) {
    case FolderArchiveAccountInfo::UniqueFolder:
        //Nothing
        break;
    case FolderArchiveAccountInfo::FolderByMonths:
        //TODO translate ?
        folderName = QString::fromLatin1("%1-%2").arg(mCurrentDate.month()).arg(mCurrentDate.year());
        break;
    case FolderArchiveAccountInfo::FolderByYears:
        folderName = QString::fromLatin1("%1").arg(mCurrentDate.year());
        break;
    }

    if (folderName.isEmpty()) {
        Q_EMIT checkFailed(i18n("Folder name not defined."));
        return;
    }

    Akonadi::CollectionFetchJob *fetchJob = qobject_cast<Akonadi::CollectionFetchJob*>( job );

    foreach ( const Akonadi::Collection &collection, fetchJob->collections() ) {
        if (collection.name() == folderName) {
            Q_EMIT collectionIdFound(collection);
            return;
        }
    }
    createNewFolder(folderName);
}

void FolderArchiveAgentCheckCollection::createNewFolder(const QString &name)
{
    Akonadi::Collection parentCollection(mInfo->archiveTopLevel());
    Akonadi::Collection collection;
    collection.setParentCollection( parentCollection );
    collection.setName( name );
    collection.setContentMimeTypes( QStringList() << QLatin1String( "message/rfc822" ) );

    Akonadi::CollectionCreateJob *job = new Akonadi::CollectionCreateJob( collection );
    connect( job, SIGNAL(result(KJob*)), this, SLOT(slotCreateNewFolder(KJob*)) );
}

void FolderArchiveAgentCheckCollection::slotCreateNewFolder(KJob *job)
{
    if ( job->error() ) {
        qWarning() << job->errorString();
        Q_EMIT checkFailed(i18n("Unable to create folder. %1", job->errorString()));
        return;
    }
    Akonadi::CollectionCreateJob *createJob = qobject_cast<Akonadi::CollectionCreateJob*>( job );
    Q_EMIT collectionIdFound(createJob->collection());
}

