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

    File: AFIO.hpp
    Date: 2021-8-21
    Author: Reece
***/
#pragma once

namespace Aurora::IO::FS
{
    class IAsyncTransaction;
    
    class IAsyncFileStream
    {
    public:
        virtual AuSPtr<IAsyncTransaction> NewTransaction() = 0;
    };
    
    class IAsyncFinishedSubscriber
    {
    public:
        virtual void OnAsyncFileOpFinished(AuUInt64 offset, AuUInt32 length) = 0;
    };
    
    class IAsyncTransaction
    {
    public:
        virtual bool StartRead(AuUInt64 offset, void *, AuUInt32 length) = 0;
        virtual bool StartWrite(AuUInt64 offset, const void *, AuUInt32 length) = 0;
        
        virtual bool Complete() = 0;
        virtual AuUInt32 GetLastPacketLength() = 0;
        
        virtual void SetCallback(const AuSPtr<IAsyncFinishedSubscriber> &sub) = 0;
        
        virtual void Wait(AuUInt32 timeout) = 0;
    };
    
    AUKN_SHARED_API(OpenAsync, IAsyncFileStream, const AuString &path, bool readOnly = true, bool directIO = false);
    
    AUKN_SYM bool WaitMultiple(const AuList<IAsyncTransaction> &files, AuUInt32 timeout);
}