/**
 * $RCSfile$
 * $Revision: $
 * $Date: $
 *
 * Copyright 2003-2006 Jive Software.
 *
 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jivesoftware.smackx.provider;

import java.text.ParseException;
import java.util.Date;

import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smackx.packet.DataForm;
import org.jivesoftware.smackx.packet.StreamInitiation;
import org.jivesoftware.smackx.packet.StreamInitiation.File;
import org.xmlpull.v1.XmlPullParser;

/**
 * The StreamInitiationProvider parses StreamInitiation packets.
 * 
 * @author Alexander Wenckus
 * 
 */
public class StreamInitiationProvider implements IQProvider {

	public IQ parseIQ(final XmlPullParser parser) throws Exception {
		boolean done = false;

		// si
		String id = parser.getAttributeValue("", "id");
		String mimeType = parser.getAttributeValue("", "mime-type");

		StreamInitiation initiation = new StreamInitiation();

		// file
		String name = null;
		String size = null;
		String hash = null;
		String date = null;
		String desc = null;
		boolean isRanged = false;

		// feature
		DataForm form = null;
		DataFormProvider dataFormProvider = new DataFormProvider();

		int eventType;
		String elementName;
		String namespace;
		while (!done) {
			eventType = parser.next();
			elementName = parser.getName();
			namespace = parser.getNamespace();
			if (eventType == XmlPullParser.START_TAG) {
				if (elementName.equals("file")) {
					name = parser.getAttributeValue("", "name");
					size = parser.getAttributeValue("", "size");
					hash = parser.getAttributeValue("", "hash");
					date = parser.getAttributeValue("", "date");
				} else if (elementName.equals("desc")) {
					desc = parser.nextText();
				} else if (elementName.equals("range")) {
					isRanged = true;
				} else if (elementName.equals("x")
						&& namespace.equals("jabber:x:data")) {
					form = (DataForm) dataFormProvider.parseExtension(parser);
				}
			} else if (eventType == XmlPullParser.END_TAG) {
				if (elementName.equals("si")) {
					done = true;
				} else if (elementName.equals("file")) {
                    long fileSize = 0;
                    if(size != null && size.trim().length() !=0){
                        try {
                            fileSize = Long.parseLong(size);
                        }
                        catch (NumberFormatException e) {
                            e.printStackTrace();
                        }
                    }
                    
                    Date fileDate = new Date();
                    if (date != null) {
                        try {
                            fileDate = StringUtils.parseXEP0082Date(date);
                        } catch (ParseException e) {
                            // couldn't parse date, use current date-time
                        }
                    }
                    
                    File file = new File(name, fileSize);
					file.setHash(hash);
					file.setDate(fileDate);
					file.setDesc(desc);
					file.setRanged(isRanged);
					initiation.setFile(file);
				}
			}
		}

		initiation.setSesssionID(id);
		initiation.setMimeType(mimeType);

		initiation.setFeatureNegotiationForm(form);

		return initiation;
	}

}
