src/app/clusters/diagnostic-logs-server/DiagnosticLogsCluster.h

/*
 *    Copyright (c) 2025 Project CHIP Authors
 *    All rights reserved.
 *
 *    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.
 */

#pragma once

#include <app/clusters/diagnostic-logs-server/DiagnosticLogsProviderDelegate.h>
#include <app/server-cluster/DefaultServerCluster.h>

namespace chip {
namespace app {
namespace Clusters {

class DiagnosticLogsCluster : public DefaultServerCluster
{
public:
    DiagnosticLogsCluster() : DefaultServerCluster({ kRootEndpointId, DiagnosticLogs::Id }) {}

    static DiagnosticLogsCluster & Instance()
    {
        static DiagnosticLogsCluster instance;
        return instance;
    }

    // Server cluster implementation
    DataModel::ActionReturnStatus ReadAttribute(const DataModel::ReadAttributeRequest & request,
                                                AttributeValueEncoder & encoder) override;
    std::optional<DataModel::ActionReturnStatus> InvokeCommand(const DataModel::InvokeRequest & request,
                                                               TLV::TLVReader & input_arguments, CommandHandler * handler) override;
    CHIP_ERROR AcceptedCommands(const ConcreteClusterPath & path,
                                ReadOnlyBufferBuilder<DataModel::AcceptedCommandEntry> & builder) override;
    CHIP_ERROR GeneratedCommands(const ConcreteClusterPath & path, ReadOnlyBufferBuilder<CommandId> & builder) override;

    /**
     * Set the default delegate of the diagnostic logs cluster for the specified endpoint
     *
     * @param endpoint ID of the endpoint
     *
     * @param delegate The log provider delegate at the endpoint
     */
    void SetDelegate(DiagnosticLogs::DiagnosticLogsProviderDelegate * delegate) { mDelegate = delegate; }

    /**
     * Handles the request to download diagnostic logs of type specified in the intent argument for protocol type ResponsePayload
     * This should return whatever fits in the logContent field of the RetrieveLogsResponse command
     *
     * @param commandObj  The command handler object from the RetrieveLogsRequest command
     * @param path        The command path from the RetrieveLogsRequest command
     * @param intent      The log type requested in the RetrieveLogsRequest command
     * @param status      The status to be returned on success
     *
     * @commandObject AddStatus WILL BE SET after this menthod executes
     */
    void HandleLogRequestForResponsePayload(CommandHandler * commandObj, const ConcreteCommandPath & path,
                                            DiagnosticLogs::IntentEnum intent,
                                            DiagnosticLogs::StatusEnum status = DiagnosticLogs::StatusEnum::kSuccess);

    std::optional<DataModel::ActionReturnStatus> HandleLogRequestForBdx(CommandHandler * commandObj,
                                                                        const ConcreteCommandPath & path,
                                                                        DiagnosticLogs::IntentEnum intent,
                                                                        Optional<CharSpan> transferFileDesignator);

private:
    DiagnosticLogs::DiagnosticLogsProviderDelegate * mDelegate = nullptr;
};

} // namespace Clusters
} // namespace app
} // namespace chip