/*
 * Copyright (c) 1998-2014 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source 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 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Nam Nguyen
 */

package com.caucho.quercus.lib.curl;

import java.io.IOException;
import java.io.OutputStream;

import com.caucho.quercus.env.Callable;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.LongValue;
import com.caucho.quercus.env.StringValue;
import com.caucho.quercus.env.Value;
import com.caucho.quercus.lib.file.BinaryInput;

public class UserBody extends PostBody
{
  private final CurlResource _curl;

  private Callable _callback;
  private Value _fileV;
  private long _length;

  public UserBody(Env env,
                  CurlResource curl,
                  Callable callback, BinaryInput file, long length)
  {
    _curl = curl;

    _callback = callback;
    _fileV = env.wrapJava(file);
    _length = length;
  }

  @Override
  public String getContentType()
  {
    return "application/x-www-form-urlencoded";
  }

  @Override
  public long getContentLength()
  {
    return (long) _length;
  }

  @Override
  public boolean isChunked()
  {
    return _length < 0;
  }

  public void writeTo(Env env, OutputStream os)
    throws IOException
  {
    long length = _length;

    long totalWritten = 0;

    LongValue lengthV = LongValue.create(length);

      while (totalWritten < length) {
        StringValue str
          = _callback.call(env, _curl, _fileV, lengthV).toStringValue(env);

        int count = str.length();

        if (count == 0) {
          break;
        }

        str.writeTo(os);

        totalWritten += count;
      }
  }
}
