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 org.apache.commons.lang3.StringUtils;

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;
	
	
	private transient LogPersistance logPersistance;		
	//transient 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 {

		AddressSearch search = (AddressSearch) 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");
		String omdeling = request.getParameter("omdeling");
		
		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();
		}
		
		if (omdeling == null || omdeling.equals("") ) {
			omdeling = "H";
		}
		
		if ( omdeling.equals("H") == false && omdeling.equals("S") == false ) {
			response.setContentType("text/xml; charset=UTF-8");
			response.getWriter().print( generateErrorXML("Ugyldig omdelingsdag - Kun H og S er gyldig") );
			return;			
		}

		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>");
		}
		
		String rute = StringUtils.defaultString(result.address.rute); //Sikre at der ikke sendes "null" tilbage
		String koreliste = StringUtils.defaultString(result.address.koreliste); //Sikre at der ikke sendes "null" tilbage
		
		String ruteSondag = StringUtils.defaultString(result.address.ruteSondag); //Sikre at der ikke sendes "null" tilbage
		String korelisteSondag = StringUtils.defaultString(result.address.korelisteSondag); //Sikre at der ikke sendes "null" tilbage
			
		sb.append("<error>").append( result.status ).append("</error>");
		
		if (omdeling.equals("H")) { //Hverdag
			sb.append("<distrikt>").append( rute ).append("</distrikt>");
			sb.append("<koreliste>").append( koreliste ).append("</koreliste>");
		} else {
			sb.append("<distrikt>").append( ruteSondag ).append("</distrikt>");
			sb.append("<koreliste>").append( korelisteSondag ).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("<split>");
		sb.append("<vej>").append( result.splitResult.vej).append("</vej>");
		sb.append("<husnr>").append( result.splitResult.husnr).append("</husnr>");
		sb.append("<litra>").append( result.splitResult.litra).append("</litra>");
		sb.append("<etage>").append( result.splitResult.etage).append("</etage>"); //sal
		sb.append("<lejlighed>").append( result.splitResult.lejlighed).append("</lejlighed>"); //side
		sb.append("</split>");
		
		
		sb.append("<gadeident>").append( result.gadeident ).append("</gadeident>");
		sb.append("<vejnavn>").append(result.vej).append("</vejnavn>");
		
		sb.append("<latitude>").append(result.address.latitude).append("</latitude>");
		sb.append("<longitude>").append(result.address.longitude).append("</longitude>");
		
		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();
		 
	}

}