package org.gcube.nlphub;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;

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

import org.apache.log4j.Logger;
import org.gcube.nlphub.nlp.NlpNerRunner;
import org.gcube.nlphub.mapper.JsonMapper;
import org.gcube.nlphub.mapper.DefaultMapper;

/**
 * Servlet implementation class NlpMapper
 */
@WebServlet("/nlphub-mapper-servlet")
public class NLPMapper extends HttpServlet {
	private static final long serialVersionUID = 1L;
	private Logger logger = Logger.getLogger(NLPMapper.class.getSimpleName());

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public NLPMapper() {
		super();
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doWork(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doWork(request, response);
	}

	private void doWork(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// response.getWriter().append("Served at:
		// ").append(request.getContextPath());
		String documentLink = request.getParameter("dlink"); // link al testo (sul workspace)
		String toBeMap = request.getParameter("tobemap");
		String[] tokens = toBeMap.split("|");
		String annotations = request.getParameter("annotations");
		String language = request.getParameter("language");

		for (String token : tokens) {
			String[] t = token.split(":::");
			try {
				String json = ((JsonMapper)(getMapper(t[0]).newInstance())).getJson(t[0], t[1]);
				
			} catch (Exception e) {
				logger.error(e.getLocalizedMessage());
			}
		}
		
		//response.getWriter().write(json);
	}

	private Class getMapper(String algId) throws Exception {
		return Class.forName("org.gcube.nlphub.mapper.DefaultMapper");
	}

}