/*
 *   Copyright (C) 2015 Christian Mollekopf <chrigi_1@fastmail.fm>
 *
 *   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 "facade.h"

#include "commands.h"
#include "log.h"
#include "storage.h"
#include "definitions.h"
#include "domainadaptor.h"
#include "queryrunner.h"

using namespace Akonadi2;


template<class DomainType>
GenericFacade<DomainType>::GenericFacade(const QByteArray &resourceIdentifier, const DomainTypeAdaptorFactoryInterface::Ptr &adaptorFactory , const QSharedPointer<Akonadi2::ResourceAccessInterface> resourceAccess)
    : Akonadi2::StoreFacade<DomainType>(),
    mResourceAccess(resourceAccess),
    mDomainTypeAdaptorFactory(adaptorFactory),
    mResourceInstanceIdentifier(resourceIdentifier)
{
    if (!mResourceAccess) {
        mResourceAccess = QSharedPointer<Akonadi2::ResourceAccess>::create(resourceIdentifier);
    }
}

template<class DomainType>
GenericFacade<DomainType>::~GenericFacade()
{
}

template<class DomainType>
QByteArray GenericFacade<DomainType>::bufferTypeForDomainType()
{
    //We happen to have a one to one mapping
    return Akonadi2::ApplicationDomain::getTypeName<DomainType>();
}

template<class DomainType>
KAsync::Job<void> GenericFacade<DomainType>::create(const DomainType &domainObject)
{
    if (!mDomainTypeAdaptorFactory) {
        Warning() << "No domain type adaptor factory available";
        return KAsync::error<void>();
    }
    flatbuffers::FlatBufferBuilder entityFbb;
    mDomainTypeAdaptorFactory->createBuffer(domainObject, entityFbb);
    return mResourceAccess->sendCreateCommand(bufferTypeForDomainType(), QByteArray::fromRawData(reinterpret_cast<const char*>(entityFbb.GetBufferPointer()), entityFbb.GetSize()));
}

template<class DomainType>
KAsync::Job<void> GenericFacade<DomainType>::modify(const DomainType &domainObject)
{
    if (!mDomainTypeAdaptorFactory) {
        Warning() << "No domain type adaptor factory available";
        return KAsync::error<void>();
    }
    flatbuffers::FlatBufferBuilder entityFbb;
    mDomainTypeAdaptorFactory->createBuffer(domainObject, entityFbb);
    return mResourceAccess->sendModifyCommand(domainObject.identifier(), domainObject.revision(), bufferTypeForDomainType(), QByteArrayList(), QByteArray::fromRawData(reinterpret_cast<const char*>(entityFbb.GetBufferPointer()), entityFbb.GetSize()));
}

template<class DomainType>
KAsync::Job<void> GenericFacade<DomainType>::remove(const DomainType &domainObject)
{
    return mResourceAccess->sendDeleteCommand(domainObject.identifier(), domainObject.revision(), bufferTypeForDomainType());
}

template<class DomainType>
QPair<KAsync::Job<void>, typename ResultEmitter<typename DomainType::Ptr>::Ptr> GenericFacade<DomainType>::load(const Akonadi2::Query &query)
{
    //The runner lives for the lifetime of the query
    auto runner = new QueryRunner<DomainType>(query, mResourceAccess, mResourceInstanceIdentifier, mDomainTypeAdaptorFactory, bufferTypeForDomainType());
    return qMakePair(KAsync::null<void>(), runner->emitter());
}


template class Akonadi2::GenericFacade<Akonadi2::ApplicationDomain::Folder>;
template class Akonadi2::GenericFacade<Akonadi2::ApplicationDomain::Mail>;
template class Akonadi2::GenericFacade<Akonadi2::ApplicationDomain::Event>;

#include "facade.moc"