/*
*    Copyright [2011] [wisemapping]
*
*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
*   It is basically the Apache License, Version 2.0 (the "License") plus the
*   "powered by wisemapping" text requirement on every single page;
*   you may not use this file except in compliance with the License.
*   You may obtain a copy of the license at
*
*       http://www.wisemapping.org/license
*
*   Unless required by applicable law or agreed to in writing, software
*   distributed under the License is distributed on an "AS IS" BASIS,
*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*   See the License for the specific language governing permissions and
*   limitations under the License.
*/

package com.wisemapping.security;

import com.wisemapping.model.User;

import javax.servlet.http.HttpServletRequest;

import org.acegisecurity.providers.AbstractAuthenticationToken;
import org.acegisecurity.context.SecurityContextHolder;
import org.acegisecurity.Authentication;


public class Utils {
    private Utils() {
    }

    public static User getUser(final HttpServletRequest request) {

        final AbstractAuthenticationToken token = (AbstractAuthenticationToken) request.getUserPrincipal();
        User result = null;
        if (token != null) {
            final com.wisemapping.security.User user = (com.wisemapping.security.User) token.getPrincipal();
            result = user.getModel();
        }
        return result;
    }

    public static User getUser()
    {
        User user = null;
        final Authentication auth = SecurityContextHolder.getContext().getAuthentication();
        if (auth != null && auth.getDetails() != null)
        {
            final Object principal = auth.getPrincipal();
            if (principal != null && principal instanceof com.wisemapping.security.User) {
                user = ((com.wisemapping.security.User)principal).getModel();
            }
        }
        return user;
    }
}