package dk.daoas.daoadresseservice;

import java.io.IOException;

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 dk.daoas.daoadresseservice.admin.ServiceConfig;
import dk.daoas.daoadresseservice.beans.Address;
import dk.daoas.daoadresseservice.beans.SearchResult;
import dk.daoas.daoadresseservice.beans.SearchResult.Status;
import dk.daoas.daoadresseservice.db.LogPersistance;

/**
 * Denne servlet forventer at Tomcat connector'en er konfigureret med 
 * URIEncoding="UTF-8"
 */
@WebServlet(urlPatterns = { "/SearchServlet", "/search" }, loadOnStartup = 1)
public class SearchServlet extends HttpServlet {
	
	private static final long serialVersionUID = 1L;
	LogPersistance logPersistance;		
	ServiceConfig config;
	
	@Override
	public void init() throws ServletException {
		super.init();
		
		config = (ServiceConfig) this.getServletContext().getAttribute("config");
		logPersistance = new LogPersistance();
		
		System.out.println("SearchServlet loaded");
	}

	@Override
	public void destroy() {
		super.destroy();
		
		if (logPersistance != null) {
			logPersistance.shutdown();
		}
		System.out.println("SearchServlet destroyed");
	}






	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		AdressSearch search = (AdressSearch) this.getServletContext().getAttribute("search");
		if (search == null) {
			response.setContentType("text/xml; charset=UTF-8");
			response.getWriter().print( generateErrorXML("Service not ready") );
			return;			
		}
		
		String brugerid = request.getParameter("brugerid");
		String postnr = request.getParameter("postnr");
		String adresseStr = request.getParameter("adresse");
		
		if (postnr == null) {
			response.setContentType("text/xml; charset=UTF-8");
			response.getWriter().print( generateErrorXML("Mangler postnr parameter") );
			return;			
		}
		
		if (adresseStr == null) {
			response.setContentType("text/xml; charset=UTF-8");
			response.getWriter().print( generateErrorXML("Mangler adresse parameter") );
			return;			
		}
		if (brugerid == null) {
			brugerid = request.getRemoteHost();
		}

		SearchResult result = search.search(postnr, adresseStr);
		
		
		StringBuilder sb = new StringBuilder();
		sb.append("<result>\n");
		
		if (result.status == Status.STATUS_OK) {
			sb.append("<status>ok</status>");
		} else {
			sb.append("<status>error</status>");
		}
			
		sb.append("<error>").append( result.status ).append("</error>");
		sb.append("<distrikt>").append(result.address.rute).append("</distrikt>");
		sb.append("<koreliste>").append(result.address.koreliste).append("</koreliste>");
		sb.append("<kommunekode>").append(result.address.kommunekode).append("</kommunekode>");
		sb.append("<vejkode>").append(result.address.vejkode).append("</vejkode>");
		sb.append("<dbkbane>").append(result.address.dbkBane).append("</dbkbane>");
		sb.append("\n");
		
		//Extra information
		sb.append("<gadeident>").append( result.gadeident ).append("</gadeident>");
		sb.append("<vejnavn>").append(result.address.vejnavn).append("</vejnavn>");
		sb.append("<daekning>").append(result.address.daekningsType).append("</daekning>");
		sb.append("<distributor>").append(result.address.distributor).append("</distributor>");
		if (result.address.daekningsType == DaekningsType.DAEKNING_UDVIDET) {
			sb.append("<extafstand>").append(result.address.extAfstand).append("</extafstand>");
			
			Address t = result.address.extTarget;
			sb.append("<extaddr>").append(t.vejnavn + " " + t.husnr + t.husnrbogstav + ", " + t.postnr).append("</extaddr>");
		}		
		
		sb.append("<levenshtein>").append(result.levenshtein).append("</levenshtein>");
		
		sb.append("<osm>").append(result.osm).append("</osm>");
		sb.append("<osmvej>").append(result.osmVej).append("</osmvej>");
		
		sb.append("<google>").append(result.google).append("</google>");
		sb.append("<googlevej>").append(result.googleVej).append("</googlevej>");
						

		sb.append("</result>");
		
		response.setContentType("text/xml; charset=UTF-8");
		response.getWriter().print( sb );
		
		logPersistance.saveRequestLog(brugerid, postnr, adresseStr, result);
		
	}
	
	private String generateErrorXML(String msg) {
		StringBuilder sb = new StringBuilder();
		sb.append("<result>");
		sb.append("<status>error</status>"); 
		sb.append("<error>").append(msg).append("</error>");
		sb.append("</result>");
		
		return sb.toString();
		 
	}

}