eu.gyza.eap.eapsocialontology.facebook.PostToWallAfterConnectInterceptor.java Source code

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Here is the source code for eu.gyza.eap.eapsocialontology.facebook.PostToWallAfterConnectInterceptor.java

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/*
 * Copyright 2014 the original author or authors.
 *
 * 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 eu.gyza.eap.eapsocialontology.facebook;

import org.springframework.social.ApiException;
import org.springframework.social.connect.Connection;
import org.springframework.social.connect.ConnectionFactory;
import org.springframework.social.connect.web.ConnectInterceptor;
import org.springframework.social.facebook.api.Facebook;
import org.springframework.util.MultiValueMap;
import org.springframework.util.StringUtils;
import org.springframework.web.context.request.WebRequest;

public class PostToWallAfterConnectInterceptor implements ConnectInterceptor<Facebook> {

    public void preConnect(ConnectionFactory<Facebook> connectionFactory, MultiValueMap<String, String> parameters,
            WebRequest request) {
        if (StringUtils.hasText(request.getParameter(POST_TO_WALL_PARAMETER))) {
            request.setAttribute(POST_TO_WALL_ATTRIBUTE, Boolean.TRUE, WebRequest.SCOPE_SESSION);
        }
    }

    public void postConnect(Connection<Facebook> connection, WebRequest request) {
        if (request.getAttribute(POST_TO_WALL_ATTRIBUTE, WebRequest.SCOPE_SESSION) != null) {
            try {
                connection.updateStatus("I've connected with the EAP Social Ontology!");
            } catch (ApiException e) {
                // Do nothing: No need to break down if the post-connect post can't be made.
            }
            request.removeAttribute(POST_TO_WALL_ATTRIBUTE, WebRequest.SCOPE_SESSION);
        }
    }

    private static final String POST_TO_WALL_PARAMETER = "postToWall";

    private static final String POST_TO_WALL_ATTRIBUTE = "facebookConnect." + POST_TO_WALL_PARAMETER;
}