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

    File: IStreamWriter.inl
    Date: 2022-5-28
    Author: Reece
***/
#pragma once

namespace Aurora::IO
{
    inline EStreamError WriteAll(IStreamWriter *that, const Memory::MemoryViewStreamRead &parameters)
    {
        EStreamError ret = EStreamError::eErrorNone;
        
        AuUInt target = parameters.length;
        AuUInt written = 0;
        AuUInt total = 0;

        Memory::MemoryViewStreamRead copy(Memory::MemoryViewRead(parameters.ptr, target), written);
        while ((target) &&
               (ret = that->Write(copy)) == EStreamError::eErrorNone)
        {
            if (written == 0 && target)
            {
                parameters.outVariable = written;
                return EStreamError::eErrorEndOfStream;
            }

            total += written;
            if (total > parameters.length)
            {
                // !!!
                parameters.outVariable = written;
                return EStreamError::eErrorEndOfStream;
            }
          
            target -= written;

            copy.ptr = copy.Begin<char>() + written;
            copy.length -= written;

            written = 0;
        }

        parameters.outVariable = total;

        return ret;
    }
}