com.buddycloud.friendfinder.handler.MatchContactFromContactProviderHandler.java Source code

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Here is the source code for com.buddycloud.friendfinder.handler.MatchContactFromContactProviderHandler.java

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/*
 * Copyright 2011 buddycloud
 *
 * 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.buddycloud.friendfinder.handler;

import java.util.LinkedList;
import java.util.List;

import org.dom4j.Element;
import org.jamppa.component.handler.AbstractQueryHandler;
import org.jamppa.component.utils.XMPPUtils;
import org.xmpp.packet.IQ;

import com.buddycloud.friendfinder.HashUtils;
import com.buddycloud.friendfinder.provider.ContactProfile;
import com.buddycloud.friendfinder.provider.OAuth1ContactProvider;
import com.buddycloud.friendfinder.provider.OAuth2ContactProvider;

/**
 * @author Abmar
 *
 */
public abstract class MatchContactFromContactProviderHandler<T> extends AbstractQueryHandler {

    private T contactProvider;

    public MatchContactFromContactProviderHandler(String namespace) {
        super(namespace);
    }

    /* (non-Javadoc)
     * @see org.jamppa.component.handler.QueryHandler#handle(org.xmpp.packet.IQ)
     */
    @Override
    public IQ handle(IQ iq) {
        Element queryElement = iq.getElement().element("query");
        String accessToken = queryElement.element("access_token").getText();

        Element accessTokenSecretEl = queryElement.element("access_token_secret");
        String accessTokenSecret = null;
        if (accessTokenSecretEl != null) {
            accessTokenSecret = accessTokenSecretEl.getText();
        }

        ContactProfile profile = null;

        try {
            if (accessTokenSecret != null) {
                profile = ((OAuth1ContactProvider) getProvider()).getProfile(accessToken, accessTokenSecret);
            } else {
                profile = ((OAuth2ContactProvider) getProvider()).getProfile(accessToken);
            }
        } catch (Exception e) {
            return XMPPUtils.error(iq, "Could not retrieve contact profile. Namespace [" + getNamespace() + "]",
                    getLogger());
        }

        HashUtils.reportHash(iq.getFrom().toBareJID(), profile.getMyHash(), getDataSource());
        List<MatchedUser> reportedHashes = new LinkedList<MatchedUser>();

        for (String friendHash : profile.getMyFriendsHashes()) {
            String jid = HashUtils.retrieveJid(friendHash, getDataSource());
            if (jid != null) {
                reportedHashes.add(new MatchedUser(jid, friendHash));
            }
        }

        return createResponse(iq, reportedHashes);
    }

    private IQ createResponse(IQ iq, List<MatchedUser> matchedUsers) {
        IQ result = IQ.createResultIQ(iq);
        Element queryElement = result.getElement().addElement("query", getNamespace());
        for (MatchedUser user : matchedUsers) {
            Element itemEl = queryElement.addElement("item");
            itemEl.addAttribute("jid", user.getJid());
            itemEl.addAttribute("matched-hash", user.getHash());
        }
        return result;
    }

    private T getProvider() {
        if (contactProvider == null) {
            contactProvider = createProvider();
        }
        return contactProvider;
    }

    /**
     * @return
     */
    protected abstract T createProvider();
}