package interceptor;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import logical.login.LoginUser;

import org.apache.log4j.Logger;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

public class SessionCheckInterceptor extends HandlerInterceptorAdapter {

    private static Logger log = Logger.getLogger(SessionCheckInterceptor.class.toString());

    public void afterCompletion(HttpServletRequest request,

            HttpServletResponse response,

            Object handler,

            Exception ex) throws Exception {

    }  

    @Override

    public void postHandle(HttpServletRequest request,

            HttpServletResponse response,

            Object handler,

            ModelAndView modelAndView) throws Exception {

    }  

    @Override

    public boolean preHandle(HttpServletRequest request,

            HttpServletResponse response, Object handler) throws Exception {

        //判斷此使用者是否可進此連結

        request.setCharacterEncoding("UTF-8");

        String url = request.getServletPath();

        log.info("post URL："+url);

        /*{

            List<HttpSession> sessionList = HttpSessionListenerTest.getAllSession();

            log.info("\n\n\n\n Session資料開始============================");

            for( int i=0; i < sessionList.size(); i++){

                Object ob = sessionList.get(i).getAttribute("loginUser");

                if( ob == null ){

                    continue;

                }

                LoginUser result = (LoginUser)ob;

                System.out.println( result.getAccountName());

            }

            log.info("Session資料結束============================");

        }

        */

        /*String headername = "";

        for(Enumeration e = request.getHeaderNames(); e.hasMoreElements();){

            headername = (String)e.nextElement();

            String value = request.getHeader(headername);

            log.info(headername+":"+value);

        }*/

        if(this.isPassUrl(url)){

            //判斷是否已登录

            LoginUser loginUser = CssUtil.getLoginUser(request);

            if(loginUser == null){

                //無session則是未登录狀態

                log.info(">>>未登录，請重新登录<<<");

                response.sendRedirect("../login.jsp");

                return false;

            }

        }

        return true;

    }

    private boolean isPassUrl(String url){

        if(!url.endsWith("/login/login")

                && !url.endsWith("/login/chnagePassEntry")

                && !url.endsWith("/login/change_Login")

                && !url.endsWith("/API/Service")

                && !url.endsWith("/API/Service2")

                && !url.endsWith("/province.txt")

                && !url.endsWith("/city.txt")

                && !url.endsWith("/area.txt")

                && !url.endsWith(".xml")

                && !url.endsWith(".js")

                && !url.endsWith(".css") && !url.endsWith(".png")

                && !url.endsWith(".CSS") && !url.endsWith(".CSS")

                && !url.endsWith(".jpg") && !url.endsWith(".gif")

                && !url.endsWith(".JPG") && !url.endsWith(".GIF")){

            return true;

        }

        return false;

    }

}