text: /**
   *
   *    Copyright (c) 2021 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.
   */
  
  #pragma once
  
  #include <app-common/zap-generated/enums.h>
  #include <app/util/basic-types.h>
  
  struct Identify
  {
      /**
       * Callbacks are not thread safe. To access the identify struct please
       * consider using the LockChipStack / UnlockChipStack functions of the PlatformMgr.
       */
      using onIdentifyStartCb    = void (*)(Identify *);
      using onIdentifyStopCb     = onIdentifyStartCb;
      using onEffectIdentifierCb = onIdentifyStartCb;
  
      /**
       * @brief Construct a new Identify object
       *
       * Please note: The app should create a instance of this object to handle
       * the identify.
       *
       * @param endpoint endpoint of the cluster
       * @param onIdentifyStart callback to indicate to the app to start identifiying
       * @param onIdentifyStop callback to indicate to the app to stop identifiying
       * @param identifyType initial identifying type
       * @param onEffectIdentifier if supported by the app, callback to the app to indicate change of effect identifier
       * @param effectIdentifier if supported by the app, initial identify effect
       * @param effectVariant if supported by the app, initial effect variant
       */
      Identify(chip::EndpointId endpoint, onIdentifyStartCb onIdentifyStart, onIdentifyStopCb onIdentifyStop,
               EmberAfIdentifyIdentifyType identifyType, onEffectIdentifierCb onEffectIdentifier = nullptr,
               EmberAfIdentifyEffectIdentifier effectIdentifier = EMBER_ZCL_IDENTIFY_EFFECT_IDENTIFIER_BLINK,
               EmberAfIdentifyEffectVariant effectVariant       = EMBER_ZCL_IDENTIFY_EFFECT_VARIANT_DEFAULT);
      ~Identify();
  
      chip::EndpointId mEndpoint;
      onIdentifyStartCb mOnIdentifyStart = nullptr;
      onIdentifyStopCb mOnIdentifyStop   = nullptr;
      EmberAfIdentifyIdentifyType mIdentifyType;
      onEffectIdentifierCb mOnEffectIdentifier;
      EmberAfIdentifyEffectIdentifier mCurrentEffectIdentifier;
      EmberAfIdentifyEffectIdentifier mTargetEffectIdentifier;
      uint8_t mEffectVariant;
      bool mActive            = false;
      Identify * nextIdentify = nullptr;
  
      bool hasNext() { return this->nextIdentify != nullptr; }
  
      Identify * next() { return this->nextIdentify; }
  
      void setNext(Identify * inst) { this->nextIdentify = inst; }
  };
  