bitsconfigrepository.h

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/********************************************************************************************
* Twitch Broadcasting SDK
*
* This software is supplied under the terms of a license agreement with Twitch Interactive, Inc. and
* may not be copied or used except in accordance with the terms of that agreement
* Copyright (c) 2012-2017 Twitch Interactive, Inc.
*********************************************************************************************/

#pragma once

#include "twitchsdk/core/types/coretypes.h"
#include "twitchsdk/core/types/errortypes.h"
#include "twitchsdk/chat/internal/bitsconfigrepository.h"
#include "twitchsdk/core/component.h"
#include "twitchsdk/core/cache.h"
#include "twitchsdk/core/coreutilities.h"

#include <memory>
#include <map>
#include <queue>
#include <vector>

namespace ttv
{
    class TaskRunner;

    namespace chat
    {
        class BitsConfigRepository;
        class ChatGetBitsConfigTask;
        class BitsConfiguration;
    }
}

class ttv::chat::BitsConfigRepository : public Component
{
public:
    using LookupCallback = std::function<void(TTV_ErrorCode ec, const std::shared_ptr<BitsConfiguration>& bitsConfiguration)>;
    using LookupId = uint64_t;

public:
    BitsConfigRepository();
    
    TTV_ErrorCode FetchGlobalBitsConfiguration(LookupCallback callback);
    TTV_ErrorCode FetchChannelBitsConfiguration(ChannelId channelId, LookupCallback callback);
    TTV_ErrorCode FetchGlobalBitsConfiguration(LookupCallback callback, LookupId& token);
    TTV_ErrorCode FetchChannelBitsConfiguration(ChannelId channelId, LookupCallback callback, LookupId& token);
    TTV_ErrorCode CancelFetch(LookupId token);
    
    // Component overrides
    virtual void Update() override;
    virtual TTV_ErrorCode Shutdown() override;
    virtual std::string GetLoggerName() const override;

private:
    // Component overrides
    virtual bool CheckShutdown() override;
    virtual void CompleteShutdown() override;

    TTV_ErrorCode ScheduleLookup();
    TTV_ErrorCode CacheBitsConfig(const std::shared_ptr<BitsConfiguration> bitsConfiguration);

    Cache<ChannelId, std::shared_ptr<BitsConfiguration>> mBitsConfigCache;
    std::map<ChannelId, std::shared_ptr<CallbackQueue<LookupCallback>>> mPendingBitsConfigLookups;
    std::map<LookupId, ChannelId> mChannelLookups;
    CallbackQueue<LookupCallback> mCancelledBitsConfigLookups;
    LookupId mCurrentLookupId;
    bool mLookupInProgress;
};