package dk.thoerup.pictureposterservice;

import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.Date;
import java.util.Map;
import java.util.TreeMap;
import java.util.logging.Logger;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.oreilly.servlet.multipart.FilePart;
import com.oreilly.servlet.multipart.MultipartParser;
import com.oreilly.servlet.multipart.ParamPart;
import com.oreilly.servlet.multipart.Part;

/**
 * Servlet implementation class PostServlet
 */
public class PostServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	Logger logger = Logger.getLogger(PostServlet.class.getName());
	
	protected Map<String,String> decodeString(String str) throws UnsupportedEncodingException {
		Map<String,String> map = new TreeMap<String,String>();
		
		String[] pairs = str.split("&");
		for (String pair : pairs) {
			String keyValue[] = pair.split("=");
			String key = keyValue[0];
			
			String val = URLDecoder.decode(keyValue[1], "UTF-8");
			map.put(key, val);
		}
		
		return map;
	}
       
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		MultipartParser parser = new MultipartParser(request,1000000);
		
		Map<String,String> values = null;
		byte file[] = null;
		
		Part part;
		while ( (part= parser.readNextPart()) != null) {
			if (part.getName().equals("file") ) {
				FilePart fpart = (FilePart) part;
				ByteArrayOutputStream baos = new ByteArrayOutputStream(128000);
				InputStream is = fpart.getInputStream();

				byte data[] = new byte[8192];
				int len;
				while ( (len = is.read(data)) !=-1 ) {
					baos.write(data, 0, len);
				}
				is.close();
				file = baos.toByteArray();
				baos.close();
				
			} else {
				ParamPart params = (ParamPart) part;
				values = decodeString( params.getStringValue() );
			}
		}
		
		Posting post = new Posting();
		post.setTitle( values.get("title") );
		post.setNote( values.get("note") );
		post.setAuthor(values.get("author"));
		if ( !values.get("latitude").equals("") ) {
			post.setLatitude( Double.parseDouble(values.get("latitude")) );
		}
		if ( !values.get("longitude").equals("") ) {
			post.setLongitude( Double.parseDouble(values.get("longitude")) );
		}
		
		post.setPostdate( new Date() ); // now()
		
		
		PostingDAO.savePosting(post);
		logger.info("Saved with postID=" +post.getId());
		
		String fileName = "/home/app/data/PicturePoster/" + post.getId() + ".jpeg"; 
				
		FileOutputStream fo = new FileOutputStream(fileName);
		fo.write(file);
	}

}