/**
 *
 * Copyright 2003-2007 Jive Software.
 *
 * 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.jivesoftware.smackx.search;

import java.util.List;

import org.jivesoftware.smack.SmackException.NoResponseException;
import org.jivesoftware.smack.SmackException.NotConnectedException;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException.XMPPErrorException;

import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
import org.jivesoftware.smackx.xdata.form.FillableForm;
import org.jivesoftware.smackx.xdata.form.Form;
import org.jivesoftware.smackx.xdata.packet.DataForm;

import org.jxmpp.jid.DomainBareJid;

/**
 * The UserSearchManager is a facade built upon Jabber Search Services (XEP-055) to allow for searching
 * repositories on a Jabber Server. This implementation allows for transparency of implementation of
 * searching (DataForms or No DataForms), but allows the user to simply use the DataForm model for both
 * types of support.
 * <pre>
 * XMPPConnection con = new XMPPTCPConnection("jabber.org");
 * con.login("john", "doe");
 * UserSearchManager search = new UserSearchManager(con, "users.jabber.org");
 * Form searchForm = search.getSearchForm();
 * FillableForm answerForm = searchForm.getFillableForm()
 * // Fill out the form.
 * answerForm.setAnswer("last", "DeMoro");
 * ReportedData data = search.getSearchResults(answerForm);
 * // Use Returned Data
 * </pre>
 *
 * @author Derek DeMoro
 */
public class UserSearchManager {

    private final XMPPConnection con;
    private final UserSearch userSearch;

    /**
     * Creates a new UserSearchManager.
     *
     * @param con the XMPPConnection to use.
     */
    public UserSearchManager(XMPPConnection con) {
        this.con = con;
        userSearch = new UserSearch();
    }

    /**
     * Returns the form to fill out to perform a search.
     *
     * @param searchService the search service to query.
     * @return the form to fill out to perform a search.
     * @throws XMPPErrorException if there was an XMPP error returned.
     * @throws NoResponseException if there was no response from the remote entity.
     * @throws NotConnectedException if the XMPP connection is not connected.
     * @throws InterruptedException if the calling thread was interrupted.
     */
    public Form getSearchForm(DomainBareJid searchService) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException  {
        DataForm dataForm = userSearch.getSearchForm(con, searchService);
        return new Form(dataForm);
    }

    /**
     * Submits a search form to the server and returns the resulting information
     * in the form of <code>ReportedData</code>.
     *
     * @param searchForm    the <code>Form</code> to submit for searching.
     * @param searchService the name of the search service to use.
     * @return the ReportedData returned by the server.
     * @throws XMPPErrorException if there was an XMPP error returned.
     * @throws NoResponseException if there was no response from the remote entity.
     * @throws NotConnectedException if the XMPP connection is not connected.
     * @throws InterruptedException if the calling thread was interrupted.
     */
    public ReportedData getSearchResults(FillableForm searchForm, DomainBareJid searchService)
                    throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
        DataForm dataForm = searchForm.getDataFormToSubmit();
        return userSearch.sendSearchForm(con, dataForm, searchService);
    }

    /**
     * Returns a collection of search services found on the server.
     *
     * @return a Collection of search services found on the server.
     * @throws XMPPErrorException if there was an XMPP error returned.
     * @throws NoResponseException if there was no response from the remote entity.
     * @throws NotConnectedException if the XMPP connection is not connected.
     * @throws InterruptedException if the calling thread was interrupted.
     */
    public List<DomainBareJid> getSearchServices() throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException  {
        ServiceDiscoveryManager discoManager = ServiceDiscoveryManager.getInstanceFor(con);
        return discoManager.findServices(UserSearch.NAMESPACE, false, false);
    }
}