package com.za.session.api;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.cku.core.RESTResponse;
import com.cku.util.ServletUtils;
import com.za.session.auth.Token;
import com.za.session.auth.TokenMap;
import com.za.session.conf.ServerConfig;

import java.io.*;

public class SessionServlet extends HttpServlet {
	/**
	 * 
	 */
	private static final long serialVersionUID = -8476750121365101467L;
	
	@Override
	public void init(ServletConfig conf) throws ServletException
	{
		try {
			String tomcat_path = System.getProperty("catalina.home");
			String config_path = tomcat_path + File.separator + "conf"
					+ File.separator + "com.za.session.properties";
	
			ServerConfig.instance().init(config_path);
		} catch (Exception e) {
			throw new ServletException(e);
		}
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
	{
		RESTResponse res;
		try {
			Long userId = ServletUtils.getParameterLong(request, "userId");
			String loginType = ServletUtils.getParameter(request, "loginType",null);
			
			String token = TokenMap.instance().registerToken(userId,loginType);
			res = new RESTResponse("token", token);
		} catch (Exception e) {
			res = new RESTResponse(e);
		}
		ServletUtils.writeResponse(response, res);
	}

	public void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
	{
		RESTResponse res = new RESTResponse();
		try {
			String tokenStr = ServletUtils.getParameter(request, "token");
			String loginType = ServletUtils.getParameter(request, "loginType",null);

			Token token = TokenMap.instance().verifyTokenUser(tokenStr,loginType);
			
			for (Object o : request.getParameterMap().keySet())
			{
				String key = (String)o;
				if (!key.equals("token"))
				{
					token.put(key, request.getParameter(key));
				}
			}
		} catch (Exception e) {
			res = new RESTResponse(e);
		}
		ServletUtils.writeResponse(response, res);
	}

	public void doDelete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
	{
		RESTResponse res = new RESTResponse();
		try
		{
			String token = ServletUtils.getParameter(request, "token");			
			TokenMap.instance().invalidToken(token);
		} catch (Exception e) {
			res = new RESTResponse(e);
		}
		ServletUtils.writeResponse(response, res);
	}
	
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
	{
		RESTResponse res;
		try {
			String tokenStr = ServletUtils.getParameter(request, "token");
			String loginType = ServletUtils.getParameter(request, "loginType",null);
			
			Token token = TokenMap.instance().verifyTokenUser(tokenStr,loginType);
			res = new RESTResponse("token", token);
		} catch (Exception e) {
			res = new RESTResponse(e);
		}
		ServletUtils.writeResponse(response, res);
	}
}