/***
    Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: IWorkItemHandler.hpp
    Date: 2021-11-1
    Author: Reece
***/
 #pragma once

namespace Aurora::Async
{
    AUE_DEFINE(ETickType,
    (
        eFinished,
        eRerun,
        eSchedule,
        eFailed
    ));

    struct IWorkItemHandler
    {
        struct ProcessInfo
        {
            inline ProcessInfo(bool finished) : type(finished ? ETickType::eFinished : ETickType::eFailed) {}
            inline ProcessInfo(ETickType type) : type(type) {}
            inline ProcessInfo(const AuList<AuSPtr<IWorkItem>> &blockedBy) : type(ETickType::eSchedule), waitFor(blockedBy) {}
            // ...

            ETickType type;
            AuList<AuSPtr<IWorkItem>> waitFor;
            AuUInt32 reschedMs {};
            AuUInt64 reschedNs {};
            AuUInt32 reschedClockAbsMs {};
            AuUInt64 reschedClockAbsNs {};
            // @hideinitializer
            IThreadPool *pool;
        };

        virtual void DispatchFrame(ProcessInfo &info) = 0;
        
        /// A really terrible name for the overloadable method that serves as the critical failure callback
        /// This may run from any thread
        inline virtual void OnFailure() {};

        inline virtual void *GetPrivateData() { return nullptr; }
    };
}