package org.gcube.nlphub;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
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.data.analysis.dataminermanagercl.server.dmservice.SClient;
import org.gcube.data.analysis.dataminermanagercl.shared.data.OutputData;
import org.gcube.data.analysis.dataminermanagercl.shared.data.computations.ComputationId;
import org.gcube.data.analysis.dataminermanagercl.shared.data.output.MapResource;
import org.gcube.data.analysis.dataminermanagercl.shared.data.output.Resource;
import org.gcube.data.analysis.dataminermanagercl.shared.parameters.FileParameter;
import org.gcube.data.analysis.dataminermanagercl.shared.parameters.ObjectParameter;
import org.gcube.data.analysis.dataminermanagercl.shared.parameters.Parameter;
import org.gcube.nlphub.legacy.Constants;
import org.gcube.nlphub.legacy.DataminerClient;
import org.gcube.nlphub.legacy.JsonManager;
//import org.gcube.dataminerclient.DataminerClient;
import org.gcube.nlphub.nlp.NlpNerRunner;

/**
 * Servlet implementation class NLPHub
 */
@WebServlet(asyncSupported = true, name = "NLPServlet", urlPatterns = { "/nlphub-servlet" })
public class NLPHub extends HttpServlet {
	private Logger logger = Logger.getLogger(NLPHub.class.getSimpleName());
	private static final long serialVersionUID = 1L;
	private String service = "http://dataminer-prototypes.d4science.org/wps/";
	private String token = "df2cc5f5-63ee-48c1-b2a6-1210030c57b8-843339462";
	private boolean devMode = true;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public NLPHub() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @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 {
		token = Constants.getToken(request, devMode);
		try {
			System.out.println("annotations: " + request.getParameter("annotations"));
			System.out.println("lang: " + request.getParameter("lang"));
			System.out.println("plink: " + request.getParameter("plink"));
			System.out.println("algs: " + request.getParameter("algs"));

			String[] algs = request.getParameter("algs").split(",");
			for(int i=0; i<algs.length; i++) {
				algs[i] = algs[i].trim();
			}
			
			
			if (algs.length >= 1) {
				// single algorithm execution
				System.out.println("algs[0]: " + algs[0]);
				NlpNerRunner runner = new NlpNerRunner(service, algs, token, response);
				runner.run(request.getParameter("plink"), request.getParameter("annotations"),
						request.getParameter("lang"));
			} else {
				response.setContentType("application/json;charset=UTF-8");
				try {
					PrintWriter writer = response.getWriter();
					writer.println(new JsonManager().getErrorJsonResponse("No algorithm identifiers given."));
				} catch (Exception ex) {
					logger.error(ex.getLocalizedMessage());
				}
			}
		} catch (Exception x) {
			x.printStackTrace();
		}

	}
}