EndpointAlexaLauncherHandler.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 ACSDK_SAMPLE_ENDPOINT_ENDPOINTALEXALAUNCHERHANDLER_H_
#define ACSDK_SAMPLE_ENDPOINT_ENDPOINTALEXALAUNCHERHANDLER_H_

#include <list>
#include <functional>
#include <memory>
#include <mutex>
#include <string>
#include <unordered_map>

#include <acsdkAlexaLauncherInterfaces/AlexaLauncherInterface.h>
#include <acsdkAlexaLauncherInterfaces/AlexaLauncherObserverInterface.h>
#include <acsdkAlexaLauncherInterfaces/AlexaLauncherTargetState.h>
#include <acsdk/Notifier/Notifier.h>

namespace alexaClientSDK {
namespace sampleApplications {
namespace common {

class EndpointAlexaLauncherHandler : public acsdkAlexaLauncherInterfaces::AlexaLauncherInterface {
public:
    using LaunchHandlerCallback = std::function<void(void)>;

    static std::shared_ptr<EndpointAlexaLauncherHandler> create(const std::string& endpointName);

    acsdkAlexaLauncherInterfaces::AlexaLauncherInterface::Response launchTarget(
        const acsdkAlexaLauncherInterfaces::TargetState& targetState) override;
    acsdkAlexaLauncherInterfaces::TargetState getLauncherTargetState() override;
    bool addObserver(
        const std::weak_ptr<acsdkAlexaLauncherInterfaces::AlexaLauncherObserverInterface>& observer) override;
    void removeObserver(
        const std::weak_ptr<acsdkAlexaLauncherInterfaces::AlexaLauncherObserverInterface>& observer) override;

    bool registerLaunchTargetCallback(const std::string& targetName, LaunchHandlerCallback callback);

    bool deregisterLaunchTargetCallback(const std::string& targetName);

private:
    using AlexaLauncherNotifier = notifier::Notifier<acsdkAlexaLauncherInterfaces::AlexaLauncherObserverInterface>;

    EndpointAlexaLauncherHandler(const std::string& endpointName);

    void notifyObservers(const acsdkAlexaLauncherInterfaces::TargetState& targetState);

    bool notifyTargetCallback(const std::string& targetName);

    std::mutex m_mutex;

    std::string m_endpointName;

    acsdkAlexaLauncherInterfaces::TargetState m_currentTargetState;

    std::unordered_map<std::string, LaunchHandlerCallback> m_launcherCallbacks;

    std::shared_ptr<AlexaLauncherNotifier> m_notifier;
};

}  // namespace common
}  // namespace sampleApplications
}  // namespace alexaClientSDK

#endif  // ACSDK_SAMPLE_ENDPOINT_ENDPOINTALEXALAUNCHERHANDLER_H_