com.nec.harvest.userdetails.AuthenticatedUserDetails.java Source code

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Here is the source code for com.nec.harvest.userdetails.AuthenticatedUserDetails.java

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/*
 * Copyright(C) 2014
 * NEC Corporation All rights reserved.
 * 
 * No permission to use, copy, modify and distribute this software
 * and its documentation for any purpose is granted.
 * This software is provided under applicable license agreement only.
 */
package com.nec.harvest.userdetails;

import java.util.Calendar;
import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang.StringUtils;
import org.springframework.security.core.userdetails.User;

import com.nec.core.container.ContextAwareContainer;
import com.nec.harvest.cache.CacheService;
import com.nec.harvest.constant.Constants;
import com.nec.harvest.model.Organization;
import com.nec.harvest.service.UserService;

/**
 * This class provides the logged-in user informations
 * 
 * @author <a href="mailto:sondn@nec.vn">Ngoc Son Dang</a>
 * @version AuthenticatedUserDetails.java 
 * @since 2014/05/16
 *
 */
public class AuthenticatedUserDetails extends AuthenticationInfo {

    private static CacheService<String, com.nec.harvest.model.User> cacheService;

    public AuthenticatedUserDetails(CacheService<String, com.nec.harvest.model.User> authCacheService) {
        cacheService = authCacheService;
    }

    /**
     * Get the user name of the logged in user
     * 
     * @return the user name of the user
     */
    public static String getUsername() {
        final Object principal = ContextAwareContainer.getInstance().getPrincipal();
        if (principal != null && principal instanceof User) {
            return ((User) principal).getUsername();
        } else {
            return null;
        }
    }

    /**
     * Find all the information of logged-in user
     * 
     * @return
     */
    public static com.nec.harvest.model.User getUserPrincipal() {
        com.nec.harvest.model.User userDetail = null;

        // UserPrincipal's name
        String username = getUsername();
        if (StringUtils.isNotEmpty(username)) {
            userDetail = cacheService.get(username);
            if (userDetail == null) {
                userDetail = ContextAwareContainer.getInstance().getComponent(UserService.class)
                        .findByUsrCode(username);

                //
                cacheService.put(username, userDetail);
            }
        }
        return userDetail;
    }

    public static void removeUserPrincipal() {
        final Object principal = ContextAwareContainer.getInstance().getPrincipal();
        if (principal != null && principal instanceof User) {
            String username = ((User) principal).getUsername();
            if (StringUtils.isNotEmpty(username)) {
                cacheService.remove(username);
            }
        }
    }

    /**
     * Get organization for the logged-in user
     * 
     * @return
     */
    public static Organization getOrganization() {
        final com.nec.harvest.model.User userPrincipal = getUserPrincipal();
        if (userPrincipal == null) {
            return null;
        }
        return userPrincipal.getOrganization();
    }

    /**
     * Get last time user logged on system
     * 
     * @return A date time string
     */
    @Override
    public Calendar getLastLogIn() {
        final HttpServletRequest request = ContextAwareContainer.getInstance().getRequest();
        Calendar lastTime = (Calendar) request.getSession().getAttribute(Constants.USER_LOGGED_IN_LASTTIME);
        if (lastTime == null) {
            lastTime = Calendar.getInstance();
            lastTime.setTime(new Date());
        }
        return lastTime;
    }

    /**
     * Get user's avatar encode into base64 string
     * 
     * @return The base64 string
     */
    @Override
    public String getUserAvatarBase64() {
        final com.nec.harvest.model.User user = getUserPrincipal();
        if (user != null) {
            byte[] bytes = user.getAvatarUrl();
            if (bytes != null && bytes.length > 0) {
                // Encodes the byte array into base64 string
                return Base64.encodeBase64String(bytes);
            }
        }
        return null;
    }

}