package org.jboss.resteasy.plugins.providers.multipart;

import org.jboss.resteasy.plugins.providers.multipart.i18n.Messages;
import org.jboss.resteasy.specimpl.MultivaluedMapImpl;

import javax.ws.rs.core.MultivaluedMap;

import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;

/**
 * @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
 * @version $Revision: 1 $
 */
public class AbstractMultipartFormDataWriter extends AbstractMultipartWriter {
	@Override
	protected void writeParts(MultipartOutput multipartOutput,
			OutputStream entityStream, byte[] boundaryBytes) throws IOException {
		if (!(multipartOutput instanceof MultipartFormDataOutput))
		   throw new IllegalArgumentException(Messages.MESSAGES.hadToWriteMultipartOutput(multipartOutput, this, MultipartFormDataOutput.class));
		MultipartFormDataOutput form = (MultipartFormDataOutput) multipartOutput;
		for (Map.Entry<String, OutputPart> entry : form.getFormData()
				.entrySet()) {
			if (entry.getValue().getEntity() == null)
				continue;
			MultivaluedMap<String, Object> headers = new MultivaluedMapImpl<String, Object>();
			headers.putSingle("Content-Disposition", "form-data; name=\""
					+ entry.getKey() + "\""
					+ getFilename(entry.getValue()));
			writePart(entityStream, boundaryBytes, entry.getValue(), headers);
		}

	}
	
	private String getFilename(OutputPart part) {
		String filename = part.getFilename(); 
		if (filename == null) {
			return "";
		} else {
			return "; filename=\"" + filename + "\"";
		}
	}	
}