org.springframework.social.facebook.api.impl.SocialContextTemplate.java Source code

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Here is the source code for org.springframework.social.facebook.api.impl.SocialContextTemplate.java

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/*
 * Copyright 2015 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 org.springframework.social.facebook.api.impl;

import static org.springframework.social.facebook.api.GraphApi.*;

import java.util.ArrayList;

import org.springframework.social.facebook.api.CountedList;
import org.springframework.social.facebook.api.Reference;
import org.springframework.social.facebook.api.SocialContextOperations;
import org.springframework.social.support.URIBuilder;
import org.springframework.web.client.RestOperations;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;

class SocialContextTemplate implements SocialContextOperations {

    private static final int LIMIT = 25;

    private final RestOperations rest;

    public SocialContextTemplate(RestOperations rest) {
        this.rest = rest;
    }

    public CountedList<Reference> getMutualFriends(String userId) {
        return getSocialContext(userId, "mutual_friends", LIMIT);
    }

    public CountedList<Reference> getMutualFriends(String userId, int limit) {
        return getSocialContext(userId, "mutual_friends", limit);
    }

    public CountedList<Reference> getAllMutualFriends(String userId) {
        return getSocialContext(userId, "all_mutual_friends", LIMIT);
    }

    public CountedList<Reference> getAllMutualFriends(String userId, int limit) {
        return getSocialContext(userId, "all_mutual_friends", limit);
    }

    public CountedList<Reference> getMutualLikes(String userId) {
        return getSocialContext(userId, "mutual_likes", LIMIT);
    }

    public CountedList<Reference> getMutualLikes(String userId, int limit) {
        return getSocialContext(userId, "mutual_likes", limit);
    }

    public CountedList<Reference> getFriendsUsingApp(String appId) {
        return getFriendsUsingApp(appId, LIMIT);
    }

    public CountedList<Reference> getFriendsUsingApp(String appId, int limit) {
        return getSocialContext(appId, "friends_using_app", limit);
    }

    public CountedList<Reference> getFriendsWhoLike(String objectId) {
        return getFriendsWhoLike(objectId, LIMIT);
    }

    public CountedList<Reference> getFriendsWhoLike(String objectId, int limit) {
        return getSocialContext(objectId, "friends_who_like", limit);
    }

    public CountedList<Reference> getFriendsWhoWatched(String videoId) {
        return getFriendsWhoWatched(videoId, LIMIT);
    }

    public CountedList<Reference> getFriendsWhoWatched(String videoId, int limit) {
        return getSocialContext(videoId, "video_watch_friends", limit);
    }

    public CountedList<Reference> getFriendsWhoListenTo(String objectId) {
        return getFriendsWhoListenTo(objectId, LIMIT);
    }

    public CountedList<Reference> getFriendsWhoListenTo(String objectId, int limit) {
        return getSocialContext(objectId, "music_listen_friends", limit);
    }

    public CountedList<Reference> getFriendsTaggedAt(String placeId) {
        return getFriendsTaggedAt(placeId, LIMIT);
    }

    public CountedList<Reference> getFriendsTaggedAt(String placeId, int limit) {
        return getSocialContext(placeId, "friends_tagged_at", limit);
    }

    private CountedList<Reference> getSocialContext(String userId, String context, int limit) {
        URIBuilder uriBuilder = URIBuilder.fromUri(GRAPH_API_URL + userId).queryParam("fields",
                "context.fields(" + context + ".limit(" + limit + "))");
        JsonNode responseNode = rest.getForObject(uriBuilder.build(), JsonNode.class);
        JsonNode contextNode = responseNode.get("context").get(context);
        ArrayNode dataNode = (ArrayNode) contextNode.get("data");
        ArrayList<Reference> results = new ArrayList<Reference>(dataNode.size());
        for (JsonNode itemNode : dataNode) {
            results.add(new Reference(itemNode.get("id").textValue(), itemNode.get("name").textValue()));
        }

        Integer totalCount = (contextNode.has("summary") && contextNode.get("summary").has("total_count"))
                ? contextNode.get("summary").get("total_count").intValue()
                : null;

        return new CountedList<Reference>(results, totalCount);
    }
}