com.appspot.bitlyminous.gateway.DeliciousGateway.java Source code

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Here is the source code for com.appspot.bitlyminous.gateway.DeliciousGateway.java

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/*
 * Copyright 2010 Nabeel Mukhtar 
 * 
 * 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 com.appspot.bitlyminous.gateway;

import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;

import oauth.signpost.OAuth;
import oauth.signpost.http.HttpParameters;

import com.appspot.bitlyminous.constant.ApplicationConstants;
import com.appspot.bitlyminous.entity.OAuthAuthentication;
import com.appspot.bitlyminous.entity.Suggest;
import com.appspot.bitlyminous.entity.Tag;
import com.appspot.bitlyminous.entity.Tags;
import com.appspot.bitlyminous.entity.Url;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.reflect.TypeToken;

/**
 * The Class DeliciousGateway.
 */
public class DeliciousGateway extends BaseGateway {

    /**
     * Instantiates a new delicious gateway.
     * 
     * @param consumerKey the consumer key
     * @param consumerSecret the consumer secret
     * @param accessToken the access token
     * @param accessTokenSecret the access token secret
     */
    DeliciousGateway(String consumerKey, String consumerSecret, String accessToken, String accessTokenSecret) {
        super(consumerKey, consumerSecret, accessToken, accessTokenSecret);
    }

    /**
     * Gets the suggested tags.
     * 
     * @param url the url
     * 
     * @return the suggested tags
     */
    public List<String> getSuggestedTags(String url) {
        GatewayApiUrlBuilder builder = createApiUrlBuilder(ApplicationConstants.DELICIOUS_SUGGESTED_TAGS_URL);
        String apiUrl = builder.withParameter("url", url).buildUrl();
        Suggest suggest = unmarshall(Suggest.class, callApiGet(apiUrl));
        List<String> tags = new ArrayList<String>();
        if (suggest.getRecommended() != null) {
            tags.add(suggest.getRecommended());
        }
        tags.addAll(suggest.getPopular());
        return tags;
    }

    /**
     * Adds the url.
     * 
     * @param url the url
     */
    public void addUrl(Url url) {
        GatewayApiUrlBuilder builder = createApiUrlBuilder(ApplicationConstants.DELICIOUS_ADD_POST_URL);
        String apiUrl = builder.withParameter("url", url.getUrl())
                .withParameter("description", url.getDescription(), false).withParameter("replace", "no")
                .buildUrl();
        callApiGet(apiUrl);
    }

    /**
     * Gets the user tags.
     * 
     * @return the user tags
     */
    public List<Tag> getUserTags() {
        GatewayApiUrlBuilder builder = createApiUrlBuilder(ApplicationConstants.DELICIOUS_USER_TAGS_URL);
        String apiUrl = builder.buildUrl();
        Tags tags = unmarshall(Tags.class, callApiGet(apiUrl));
        return tags.getTag();
    }

    /**
     * Gets the recent urls.
     * 
     * @param tag the tag
     * 
     * @return the recent urls
     */
    public List<Url> getRecentUrls(String tag) {
        GatewayApiUrlBuilder builder = createApiUrlBuilder(ApplicationConstants.DELICIOUS_RECENT_BY_TAG_URL);
        String apiUrl = builder.withField("tag", tag).buildUrl();
        JsonElement json = parseJson(callApiGet(apiUrl));
        return unmarshall(new TypeToken<List<Url>>() {
        }, json.getAsJsonArray());
    }

    /**
     * Gets the popular urls.
     * 
     * @param tag the tag
     * 
     * @return the popular urls
     */
    public List<Url> getPopularUrls(String tag) {
        GatewayApiUrlBuilder builder = createApiUrlBuilder(ApplicationConstants.DELICIOUS_POPULAR_BY_TAG_URL);
        String apiUrl = builder.withField("tag", tag).buildUrl();
        JsonElement json = parseJson(callApiGet(apiUrl));
        return unmarshall(new TypeToken<List<Url>>() {
        }, json.getAsJsonArray());
    }

    /**
     * Refresh token.
     * 
     * @param sessionHandle the session handle
     */
    public void refreshToken(final String sessionHandle) {
        try {
            OAuthAuthentication temp = this.authentication;
            this.authentication = null;
            GatewayApiUrlBuilder builder = createApiUrlBuilder(ApplicationConstants.DELICIOUS_REFRESH_TOKEN_URL);
            String url = builder.withParameter("oauth_nonce", "3423rw3d")
                    .withParameter("oauth_consumer_key", temp.getConsumerKey())
                    .withParameter("oauth_signature_method", "plaintext")
                    .withParameter("oauth_signature", temp.getConsumerSecret() + "&" + temp.getAccessTokenSecret())
                    .withParameter("oauth_version", "1.0").withParameter("oauth_token", temp.getAccessToken())
                    .withParameter("oauth_timestamp", String.valueOf(System.currentTimeMillis()))
                    .withParameter("oauth_session_handle", sessionHandle).buildUrl();
            HttpParameters form = OAuth.decodeForm(callApiGet(url));

            authentication = new OAuthAuthentication(temp.getConsumerKey(), temp.getConsumerSecret(),
                    form.getFirst("oauth_token"), form.getFirst("oauth_token_secret"));
            authentication.setOauthSessionHandle(form.getFirst("oauth_session_handle"));
        } catch (Exception e) {
            logger.log(Level.SEVERE, "Error while refreshing token.", e);
        }

    }

    /* (non-Javadoc)
     * @see com.appspot.bitlyminous.gateway.BaseGateway#getGsonBuilder()
     */
    @Override
    protected GsonBuilder getGsonBuilder() {
        GsonBuilder gson = super.getGsonBuilder();
        gson.setDateFormat(ApplicationConstants.DELICIOUS_DATE_PATTERN);
        return gson;
    }
}