/***
    Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: IIOProcessor.hpp
    Date: 2022-6-6
    Author: Reece
***/
#pragma once

namespace Aurora::IO
{
    struct IIOProcessor
    {
        virtual AuUInt32                 TryTick             () = 0;
        virtual AuUInt32                 RunTick             () = 0;
        virtual AuUInt32                 TickFor             (const AuSPtr<IIOProcessorItem> &ioEvent) = 0;

        virtual AuUInt32                 ManualTick          () = 0;

        virtual AuUInt64                 SetRefreshRate      (AuUInt64 ns) = 0;
        virtual bool                     HasRefreshRate      () = 0;

        virtual bool                     MultiplexRefreshRateWithIOEvents() = 0;

        virtual AuUInt64                 GetOwnedThreadId    () = 0;
        
        virtual AuSPtr<IIOProcessorItem> StartIOWatch        (const AuSPtr<IIOWaitableItem> &object, const AuSPtr<IIOEventListener> &listener) = 0;
        virtual AuSPtr<IIOProcessorItem> StartIOWatchEx      (const AuSPtr<IIOWaitableItem> &object, const AuSPtr<IIOEventListener> &listener, bool singleshot) = 0;
        
        virtual AuSPtr<IIOProcessorItem> StartSimpleIOWatch  (const AuSPtr<IIOWaitableItem> &object, const AuSPtr<IIOSimpleEventListener> &listener) = 0;
        virtual AuSPtr<IIOProcessorItem> StartSimpleIOWatchEx(const AuSPtr<IIOWaitableItem> &object, const AuSPtr<IIOSimpleEventListener> &listener, bool singleshot) = 0;
        
        virtual AuSPtr<IIOProcessorItem> StartSimpleLSWatch  (const AuSPtr<Loop::ILoopSource> &source, const AuSPtr<IIOSimpleEventListener> &listener) = 0;
        virtual AuSPtr<IIOProcessorItem> StartSimpleLSWatchEx(const AuSPtr<Loop::ILoopSource> &source, const AuSPtr<IIOSimpleEventListener> &listener, bool singleshot, AuUInt32 msTimeout = 0) = 0;

        virtual bool                     SubmitIOWorkItem   (const AuSPtr<IIOProcessorWorkUnit> &work) = 0;

        // Inter-frame callbacks indicating point of execution throughout the [START](optional [yield])[IO][IO TICK][WORK ITEMS][EPILOGUE][END OF FRAME] frame
        virtual bool                     AddEventListener   (const AuSPtr<IIOProcessorEventListener> &eventListener) = 0;
        virtual void                     RemoveEventListener(const AuSPtr<IIOProcessorEventListener> &eventListener) = 0;

        virtual AuSPtr<IIOPipeProcessor> ToPipeProcessor    () = 0;

        // Reference loop queue
        virtual AuSPtr<Loop::ILoopQueue> ToQueue            () = 0;

        virtual void                     ReleaseAllWatches  () = 0;

        virtual bool                     HasItems           () = 0;
    };

    AUKN_SYM AuSPtr<IIOProcessor> NewIOProcessor(bool tickOnly, const AuSPtr<Loop::ILoopQueue> &queue);
    AUKN_SYM AuSPtr<IIOProcessor> NewIOProcessorOnThread(bool tickOnly, Async::WorkerPId_t id);
    AUKN_SYM AuSPtr<IIOProcessor> NewIOProcessorNoQueue(bool tickOnly);
}