/**
 * Reads the RSS feeds into the job posting collection
 */

package us.deans.zinc;

import com.sun.syndication.feed.synd.SyndFeed;
import com.sun.syndication.feed.synd.SyndEntry;
import com.sun.syndication.feed.synd.SyndContentImpl;
import com.sun.syndication.io.SyndFeedInput;
import com.sun.syndication.io.XmlReader;

import org.apache.log4j.Logger;

import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

// 2 Required Jar files
//  - rome-0.9.jar retrieved from http://rome.dev.java.net/
//  - jdom.jar retrieved from http://www.jdom.org/

public class ZnRssReader
{
	
	private Logger logger;
	
	ZnRssReader(){
		
		logger = Logger.getLogger("RSSReader");
	
	}
	
	public void readRss(ArrayList<ZnJobRecord> rssData, String rssFeedUrl, String jobLocation){

		try
	 	{
			//open up a connection to the RSS feed
	 		URLConnection feedUrl = new URL(rssFeedUrl).openConnection();

	 		//Create Feed Object
	 		SyndFeedInput input = new SyndFeedInput();
	 		SyndFeed feed = input.build(new XmlReader(feedUrl));

	 		logger.info("reading RSS feed...");
	 		logger.debug("Examining rss feed:"+rssFeedUrl+"\n"+"Feed type="+feed.getFeedType()+"\n");
   
	 		//Iterate through object to get details
	 		List list = feed.getEntries();

	 		for (int i=0 ; i < list.size(); i++){

	 			//store entry attributes
	 			SyndEntry entry = (SyndEntry)list.get(i);
	 			ZnJobRecord jobEntry = new ZnJobRecord();
	 			
	 			jobEntry.setJobTitle(entry.getTitle());
	 			jobEntry.setJobLink(entry.getLink());
	 			jobEntry.setJobLocation(jobLocation);									// inserted by application (properties file)
	 			
	 			String strJobDescription = entry.getDescription().toString();
	 			
	 			
	 			jobEntry.setJobDescription(strJobDescription.trim());
	 			
	 			//Add record to list
	 			rssData.add(jobEntry);
	 				 			
	 			//display entry attributes
	 			//logger.debug("Entry:"+i+"\ntitle:"+entry.getTitle()+"\nlink:"+entry.getLink()+"\ndescription:"+entry.getDescription());
	 			
	 			String display = "Entry:"+i+"\ntitle:"+entry.getTitle()+"\nlink:"+entry.getLink()+"\ndescription:"+entry.getDescription();
	 			
	 			//display += "\ntitle:"+entry.getTitle();
	 			//display += "\nlink:"+entry.getLink();
	 		    //display += "\ndescription:"+entry.getDescription();
	 			
	 			if (entry.getContents().size()==1)
	 			{
	 				SyndContentImpl imp = (SyndContentImpl)entry.getContents().get(0);
	 				display += "\ncontent value:"+imp.getValue();     
	 			}
	 			display += "\n";
	 		//	logger.debug("display");

	 		}

	 	}
	 	catch(Exception e)
	 	{
	 		e.printStackTrace();
	 	}


 }
 
}