/*
 * TestableMessageObserver.h
 *
 * Copyright 2017 Amazon.com, Inc. or its affiliates.
 *
 * 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.
 */
#ifndef ALEXA_CLIENT_SDK_ACL_TEST_TRANSPORT_TESTABLE_MESSAGE_OBSERVER_H_
#define ALEXA_CLIENT_SDK_ACL_TEST_TRANSPORT_TESTABLE_MESSAGE_OBSERVER_H_

#include <mutex>
#include <string>
#include <vector>

#include <AVSCommon/SDKInterfaces/MessageObserverInterface.h>
#include <condition_variable>

namespace alexaClientSDK {
namespace acl {
namespace test {

/**
 * A useful class that allows us to test a Directive being received.
 */
class TestableMessageObserver : public avsCommon::sdkInterfaces::MessageObserverInterface {
public:
    void receive(const std::string& contextId, const std::string& message) override;

    /**
     * A function to wait for a specific directive to be received.
     *
     * @param directiveMessage The text of the directive.
     * @param duraton The maximum time the caller should wait for this to occur.
     * @return Whether the directive was received ok within the timeout.
     */
    bool waitForDirective(const std::string& directiveMessage, const std::chrono::seconds duration);

private:
    /// Mutex for the cv.
    std::mutex m_mutex;
    /// Trigger to wake up waitForNext calls.
    std::condition_variable m_cv;
    /// Directives this observer has received.
    std::vector<std::string> m_receivedDirectives;
};

}  // namespace test
}  // namespace acl
}  // namespace alexaClientSDK

#endif  // ALEXA_CLIENT_SDK_ACL_TEST_TRANSPORT_TESTABLE_MESSAGE_OBSERVER_H_