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/*
 * Copyright (c) 2019 TOYOTA MOTOR CORPORATION
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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 app.market.utils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

public class SpringWebUtil {

    public static HttpServletRequest getRequest() {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        return requestAttributes == null ? null : requestAttributes.getRequest();
    }

    public static HttpSession getSession() {
        return getRequest().getSession( false );
    }

    public static String getRealRootPath() {
        return getRequest().getServletContext().getRealPath( "/" );
    }

    public static String getIp() {
        ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        if ( servletRequestAttributes != null ) {
            HttpServletRequest request = servletRequestAttributes.getRequest();
            return request.getRemoteAddr();
        }
        return null;
    }

    public static Object getSessionAttribute(String name) {
        HttpServletRequest request = getRequest();
        return request == null ? null : request.getSession().getAttribute( name );
    }

    public static void setSessionAttribute(String name, Object value) {
        HttpServletRequest request = getRequest();
        if ( request != null ) {
            request.getSession().setAttribute( name, value );
        }
    }

    public static Object getRequestAttribute(String name) {
        HttpServletRequest request = getRequest();
        return request == null ? null : request.getAttribute( name );
    }

    public static void setRequestAttribute(String name, Object value) {
        HttpServletRequest request = getRequest();
        if ( request != null ) {
            request.setAttribute( name, value );
        }
    }

    public static String getContextPath() {
        return getRequest().getContextPath();
    }

    public static void removeSessionAttribute(String name) {
        getRequest().getSession().removeAttribute( name );
    }

}