package foundation.route;

import java.io.PrintWriter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import foundation.translator.Translator;


public abstract class RouteNavigator {

	protected static Logger logger;
	protected HttpServletRequest request;
	protected ClientAcceptType clientAcceptType;
	protected String uri;
	protected String path;
	protected Route route;
	protected Route redirectTo;
	protected boolean authorizeSensitive;
	protected boolean debugEnabled;
	
	static {
		logger = LogManager.getLogger();
	}
	
	public RouteNavigator(HttpServletRequest request, String uri, String path, Route route, boolean authorizeSensitive) {
		this.request = request;
		this.clientAcceptType = ClientAcceptType.getInstance(request);
		this.uri = uri;
		this.path = path;
		this.route = route;
		this.authorizeSensitive = authorizeSensitive;
		
		debugEnabled = !Translator.toBoolean(request.getParameter("silent"), false);
	}
	
	public abstract void sendTo(HttpServletResponse response, Object... args);
	
	public void onSendToError(Exception e) {
		// TODO Auto-generated method stub
	}

	public ClientAcceptType getClientAcceptType() {
		return clientAcceptType;
	}

	public void redirectToTimeOut(HttpServletResponse response, ClientAcceptType acceptType) {
		redirectTo = RouteTable.getTimeOutRoute();
		redirectTo(response, redirectTo, acceptType);
	}

	public void redirectToInvalidUserRight(HttpServletResponse response, ClientAcceptType acceptType) {
		redirectTo = RouteTable.getInvalidUserRightRoute();
		redirectTo(response, redirectTo, acceptType);
	}
	
	private void redirectTo(HttpServletResponse response, Route route, ClientAcceptType acceptType) {
        if (ClientAcceptType.Ajax == clientAcceptType) {
            response.setHeader("Access-Control-Allow-Origin", "*");
            response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, PUT");
            response.setHeader("Access-Control-Max-Age", "0");
            response.setHeader("Cache-Control","no-cache");
            response.setHeader("Access-Control-Allow-Credentials", "true");
            response.setHeader("XDomainRequestAllowed","1");
            response.setHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With,userId,token");
            response.setHeader("access-control-expose-headers", "Authorization");
        }
		
		PrintWriter writer;
		try {
			writer = response.getWriter();
			((WriterRoute)route).write(writer, acceptType);
		} 
		catch (Exception e) {
		}
	}

	public Route getRoute() {
		return route;
	}

	public boolean isAuthorizeSensitive() {
		return authorizeSensitive;
	}

	public String getUri() {
		return uri;
	}

	@Override
	public String toString() {
		return uri + " >> " + path + " : " + route.toString();
	}

	public boolean isDebugEnabled() {
		return debugEnabled;
	}

	public void setDebugEnabled(boolean debugEnabled) {
		this.debugEnabled = debugEnabled;
	}
	
}