RevokeAuthorizationHandler.h

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/*
 * Copyright Amazon.com, Inc. or its affiliates. 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.
 * A copy of the License is located at
 *
 *     http://aws.amazon.com/apache2.0/
 *
 * or in the "license" file accompanying this file. This file 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.
 */

#ifndef ALEXA_CLIENT_SDK_CAPABILITYAGENTS_SYSTEM_INCLUDE_SYSTEM_REVOKEAUTHORIZATIONHANDLER_H_
#define ALEXA_CLIENT_SDK_CAPABILITYAGENTS_SYSTEM_INCLUDE_SYSTEM_REVOKEAUTHORIZATIONHANDLER_H_

#include <memory>
#include <mutex>
#include <string>
#include <unordered_set>

#include <AVSCommon/AVS/CapabilityAgent.h>
#include <AVSCommon/SDKInterfaces/ExceptionEncounteredSenderInterface.h>
#include <AVSCommon/SDKInterfaces/RevokeAuthorizationObserverInterface.h>

namespace alexaClientSDK {
namespace capabilityAgents {
namespace system {

class RevokeAuthorizationHandler : public avsCommon::avs::CapabilityAgent {
public:
    static std::shared_ptr<RevokeAuthorizationHandler> create(
        std::shared_ptr<avsCommon::sdkInterfaces::ExceptionEncounteredSenderInterface> exceptionEncounteredSender);

    avsCommon::avs::DirectiveHandlerConfiguration getConfiguration() const override;
    void handleDirectiveImmediately(std::shared_ptr<avsCommon::avs::AVSDirective> directive) override;
    void preHandleDirective(std::shared_ptr<avsCommon::avs::CapabilityAgent::DirectiveInfo> info) override;
    void handleDirective(std::shared_ptr<avsCommon::avs::CapabilityAgent::DirectiveInfo> info) override;
    void cancelDirective(std::shared_ptr<avsCommon::avs::CapabilityAgent::DirectiveInfo> info) override;

    bool addObserver(std::shared_ptr<avsCommon::sdkInterfaces::RevokeAuthorizationObserverInterface> observer);

    bool removeObserver(std::shared_ptr<avsCommon::sdkInterfaces::RevokeAuthorizationObserverInterface> observer);

private:
    RevokeAuthorizationHandler(
        std::shared_ptr<avsCommon::sdkInterfaces::ExceptionEncounteredSenderInterface> exceptionEncounteredSender);

    void removeDirectiveGracefully(
        std::shared_ptr<avsCommon::avs::CapabilityAgent::DirectiveInfo> info,
        bool isFailure = false,
        const std::string& report = "");

    std::mutex m_mutex;

    std::unordered_set<std::shared_ptr<avsCommon::sdkInterfaces::RevokeAuthorizationObserverInterface>>
        m_revokeObservers;
};

}  // namespace system
}  // namespace capabilityAgents
}  // namespace alexaClientSDK

#endif  // ALEXA_CLIENT_SDK_CAPABILITYAGENTS_SYSTEM_INCLUDE_SYSTEM_REVOKEAUTHORIZATIONHANDLER_H_