/*

 *    Copyright (c) 2021-2025 Project CHIP Authors

 *

 *    Licensed under the Apache License, Version 2.0 (the "License");

 *    you may not use this file except in compliance with the License.

 *    You may obtain a copy of the License at

 *

 *        http://www.apache.org/licenses/LICENSE-2.0

 *

 *    Unless required by applicable law or agreed to in writing, software

 *    distributed under the License is distributed on an "AS IS" BASIS,

 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 *    See the License for the specific language governing permissions and

 *    limitations under the License.

 */

#include <app/clusters/fixed-label-server/FixedLabelCluster.h>

#include <app/server-cluster/AttributeListBuilder.h>

#include <clusters/FixedLabel/Metadata.h>

namespace chip::app::Clusters {

using namespace FixedLabel::Attributes;

namespace {

class AutoReleaseIterator

{

public:

    AutoReleaseIterator(DeviceLayer::DeviceInfoProvider & provider, EndpointId endpointId) :

        mIterator(provider.IterateFixedLabel(endpointId))

    {}

    ~AutoReleaseIterator()

    {

        if (mIterator != nullptr)

        {

            mIterator->Release();

        }

    }

    bool IsValid() const { return mIterator != nullptr; }

    DeviceLayer::DeviceInfoProvider::FixedLabelIterator * operator->() { return mIterator; }

private:

    DeviceLayer::DeviceInfoProvider::FixedLabelIterator * mIterator;

};

CHIP_ERROR ReadLabelList(EndpointId endpoint, AttributeValueEncoder & encoder, DeviceLayer::DeviceInfoProvider & provider)

{

    AutoReleaseIterator it(provider, endpoint);

    VerifyOrReturnValue(it.IsValid(), encoder.EncodeEmptyList());

    return encoder.EncodeList([&it](const auto & encod) -> CHIP_ERROR {

        FixedLabel::Structs::LabelStruct::Type fixedlabel;

        while (it->Next(fixedlabel))

        {

            ReturnErrorOnFailure(encod.Encode(fixedlabel));

        }

        return CHIP_NO_ERROR;

    });

}

} // namespace

FixedLabelCluster::FixedLabelCluster(EndpointId endpoint, DeviceLayer::DeviceInfoProvider & deviceInfoProvider) :

    DefaultServerCluster({ endpoint, FixedLabel::Id }), mDeviceInfoProvider(deviceInfoProvider)

{}

DataModel::ActionReturnStatus FixedLabelCluster::ReadAttribute(const DataModel::ReadAttributeRequest & request,

                                                               AttributeValueEncoder & encoder)

{

    switch (request.path.mAttributeId)

    {

    case LabelList::Id:

        return ReadLabelList(mPath.mEndpointId, encoder, mDeviceInfoProvider);

    case ClusterRevision::Id:

        return encoder.Encode(FixedLabel::kRevision);

    case FeatureMap::Id:

        return encoder.Encode<uint32_t>(0);

    default:

        return Protocols::InteractionModel::Status::UnsupportedAttribute;

    }

}

CHIP_ERROR FixedLabelCluster::Attributes(const ConcreteClusterPath & path,

                                         ReadOnlyBufferBuilder<DataModel::AttributeEntry> & builder)

{

    AttributeListBuilder listBuilder(builder);

    return listBuilder.Append(Span(FixedLabel::Attributes::kMandatoryMetadata), {});

}

} // namespace chip::app::Clusters