/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
#include "plBufferedSocketWriter.h"
#include "plTcpSocket.h"

plBufferedSocketWriter::plBufferedSocketWriter(int size, int bytesPerFlush, bool blockOnSend, int flushPoint)
:   plRingBuffer(size)
,   fFlushPoint(flushPoint)
,   fBlockOnSend(blockOnSend)
,   fBytesPerFlush(bytesPerFlush)
{}


int plBufferedSocketWriter::WriteBlock(const char * data, int len, plTcpSocket & sck)
{
    int ans = kSuccessNoDataSent;
    
    if(len > BufferAvailable())
        ans = Flush(sck);
    
    if(ans >= 0)
        ans = WriteBlock(data,len);
    
    if(ans >= 0 && fFlushPoint >= 0 && fFlushPoint < AmountBuffered())
        ans = Flush(sck);
            
    return ans;
}

int plBufferedSocketWriter::WriteBlock(const char * data, int len)
{
    int ans = kSuccessNoDataSent;
    if(!Put(data,len))
        ans = kFailedNoBufferSpace;
    return ans;
}

int plBufferedSocketWriter::Flush(plTcpSocket & sck)    // this is where things get ugly.
{
    int ans = kSuccessNoDataSent;

    int writeSize = MIN(FastAmountBuffered(),fBytesPerFlush);
    
    if(writeSize > 0)
    {
        int nBytesWritten = 0;
//      int nBytesWritten = sck.SendData(FastGetBufferStart(), writeSize);

//      if (nBytesWritten<0 && fBlockOnSend
//          && plNet::GetError()==kBlockingError)
        {
            bool wasBlockingOrNot = sck.IsBlocking();
            sck.SetBlocking(fBlockOnSend);
            nBytesWritten = sck.SendData(FastGetBufferStart(), writeSize);        
            sck.SetBlocking(wasBlockingOrNot);
        }

        if (nBytesWritten > 0)
        {
            fStartPos += nBytesWritten;
            FullCompress();
            ans = kSuccessDataSent;
        }
        else if (nBytesWritten < 0)
        {
            if (plNet::GetError()!=kBlockingError)
                ans = kFailedWriteError;
        }
        else
        {
            ans = kFailedSocketClosed;
        }
    }        
    return ans;
}

bool plBufferedSocketWriter::IsEmpty()
{
    return !(FastAmountBuffered() > 0);
}

void plBufferedSocketWriter::Reset()
{
    plRingBuffer::Reset();
}