/**
 * @file llxfer_file.h
 * @brief definition of LLXfer_File class for a single xfer_file.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLXFER_FILE_H
#define LL_LLXFER_FILE_H

#include "llxfer.h"
#include "lldir.h"

class LLXfer_File : public LLXfer
{
 protected:
    LLFILE *mFp;
    std::string mLocalFilename;
    std::string mRemoteFilename;
    ELLPath mRemotePath;
    std::string mTempFilename;

    bool mDeleteLocalOnCompletion;
    bool mDeleteRemoteOnCompletion;

 public:
    LLXfer_File (S32 chunk_size);
    LLXfer_File (const std::string& local_filename, bool delete_local_on_completion, S32 chunk_size);
    virtual ~LLXfer_File();

    virtual void init(const std::string& local_filename, bool delete_local_on_completion, S32 chunk_size);
    virtual void cleanup();

    virtual S32 initializeRequest(U64 xfer_id,
                                  const std::string& local_filename,
                                  const std::string& remote_filename,
                                  ELLPath remote_path,
                                  const LLHost& remote_host,
                                  bool delete_remote_on_completion,
                                  void (*callback)(void**,S32,LLExtStat),
                                  void** user_data);
    virtual S32 startDownload();

    virtual S32 processEOF();

    virtual S32 startSend(U64 xfer_id, const LLHost &remote_host);
    virtual void closeFileHandle();
    virtual S32 reopenFileHandle();

    virtual S32 suck(S32 start_position);
    virtual S32 flush();

    virtual bool matchesLocalFilename(const std::string& filename);
    virtual bool matchesRemoteFilename(const std::string& filename, ELLPath remote_path);

    virtual S32  getMaxBufferSize();

    virtual U32 getXferTypeTag();

    virtual std::string getFileName();
};

#endif