package dk.daoas.daoadresseservice;

import java.io.IOException;
import java.sql.SQLException;
import java.util.List;

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.beans.Address;
import dk.daoas.daoadresseservice.beans.LoggedAddress;
import dk.daoas.daoadresseservice.beans.SearchResult;
import dk.daoas.daoadresseservice.beans.SearchResult.Status;
import dk.daoas.daoadresseservice.db.DatabaseLayer;

/**
 * Servlet implementation class CsvUdtraek
 */
@WebServlet("/CsvUdtraek")
public class CsvUdtraek extends HttpServlet {
	private static final long serialVersionUID = 1L;

	
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String type = request.getParameter("type");		
		String str = null;
		
		if (type != null) {
			switch( type ) {
			case "ikkedaekket":
				str = udtraekIkkeDaekket();
				break;
			case "sammenlign":
				str = udtraekSammenligning(request);
				break;
			default:
				str = null; 
				break;
			}
		}
		
		if (str != null) {
			response.setContentType("text/csv");
			response.setHeader("Content-Disposition", "filename=" + type + ".csv");
			response.getWriter().print(str);
		} else {
			response.setContentType("text/plain");
			response.getWriter().print("Type parameter is blank or invalid value");
		}
	}
	
	/* *******************************************
	 * 
	 */
	private String udtraekIkkeDaekket() {
		AdressSearch search = (AdressSearch) getServletContext().getAttribute("search");
		if (search == null) {
			return "data struktur ikke indlæst";
		}
		
		StringBuilder sb = new StringBuilder();
		sb.append("gadeid;postnr;vejnavn;husnr;husnrbogstav;distributor\r\n");
		
		for (Address addr : search.getNonCoveredAddresses() ) {
			sb.append( addr.gadeid ).append(";")
				.append( addr.postnr ).append(";")
				.append( addr.vejnavn ).append(";")
				.append( addr.husnr ).append(";")
				.append( addr.husnrbogstav ).append(";")
				.append( addr.distributor != null ? addr.distributor : "" )				
				.append( "\n" );
		}
		
		return sb.toString();
	}
	
	/* *******************************************
	 * 
	 */

	protected String udtraekSammenligning(HttpServletRequest request) throws IOException {
		
		AdressSearch search = (AdressSearch) getServletContext().getAttribute("search");
		if (search == null) {
			return "data struktur ikke indlæst";
		}
		
		int antal_dage = 2;
		
		if (request.getParameter("antaldage") != null ) {
			antal_dage = Integer.parseInt("antaldage");
		}

		
		try {
			StringBuilder sb = new StringBuilder();
			sb.append("besked;postnr;adresse;gl status;ny status\n");
		
			List<LoggedAddress> addrList = DatabaseLayer.getLoggedAdresses(antal_dage);			
			
			for(LoggedAddress addr : addrList) {
				SearchResult res = search.search("" + addr.postnr, addr.adresse);
				
				if (res.status != Status.STATUS_OK) { //Ny service fandt ikke adressen) {
					
					if (addr.status != 10 ) {//Hvis gl service kunne finde adressen så er vi ude i en regression

						appendLogLine("ny fejler, gl ok", sb, addr, res);
						
					} else {
						appendLogLine("ny fejler, gl fejler !!!", sb, addr, res);
					}

				} else {
					if (addr.status == 10) {
						appendLogLine("ny OK, gl fejler", sb, addr, res);

					} else if (addr.status == 12 ) {
						
						if (res.google == false && res.osm == false) {
							
							appendLogLine("ny Direkte, gl Google", sb, addr, res);							
						}						
					}
				}
				
				if (res.osm || res.google) {
					try {
						Thread.sleep(50);//Back-off external services
					} catch(InterruptedException e) {
						//
					}
				}
			}
			sb.append("Antal adresser testet: ;").append(addrList.size()).append(";;;\n");
			

			return sb.toString();
			
		} catch(SQLException e) {
			throw new IOException(e);
		}
	}
	
    private void appendLogLine(String msg, StringBuilder sb, LoggedAddress addr, SearchResult res) {
    	
		sb.append(msg).append(";").append(addr.postnr).append(";")
			.append(addr.adresse).append(";")
			.append(addr.status).append(";").append(res.status).append("\n");
    	
    }

}