// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany

// first published 27.02.2009 on http://yacy.net

//

// This is a part of YaCy, a peer-to-peer based web search engine

//

// $LastChangedDate: 2009-02-10 01:06:59 +0100 (Di, 10 Feb 2009) $

// $LastChangedRevision: 5586 $

// $LastChangedBy: orbiter $

//

// LICENSE

//

// This program is free software; you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation; either version 2 of the License, or

// (at your option) any later version.

//

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with this program; if not, write to the Free Software

// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {

        // return variable that accumulates replacements

        final Switchboard sb = (Switchboard) env;

       

        final serverObjects prop = new serverObjects();

        if ((post == null) || (env == null)) return prop;

        final boolean authenticated = sb.adminAuthenticated(header) >= 2;

       

        Segment segment = null;

        if (post.containsKey("segment") && authenticated) {

            segment = sb.indexSegments.segment(post.get("segment"));

        } else {

            segment = sb.indexSegments.segment(Segments.Process.PUBLIC);

        }

       

        final String  querystring = post.get("query", "");  // a string of word hashes that shall be searched and combined

        final int     count  = Math.min((authenticated) ? 1000 : 10, post.getInt("maximumRecords", 1000)); // SRU syntax

        final int     maxdist= post.getInt("maxdist", Integer.MAX_VALUE);

        String  language = post.get("language", "");

        if (!ISO639.exists(language)) {

            // take language from the user agent

            String agent = header.get("User-Agent");

            if (agent == null) agent = System.getProperty("user.language");

            language = (agent == null) ? "en" : ISO639.userAgentLanguageDetection(agent);

            if (language == null) language = "en";

        }

        final TreeSet<String>[] query = QueryParams.cleanQuery(querystring); // converts also umlaute

        HandleSet q = Word.words2hashesHandles(query[0]);

       

        // tell all threads to do nothing for a specific time

        sb.intermissionAllThreads(3000);

        // prepare search

        final long timestamp = System.currentTimeMillis();

       

        // prepare an abstract result

        int indexabstractContainercount = 0;

        int joincount = 0;

        // retrieve index containers

        //yacyCore.log.logInfo("INIT TIMELINE SEARCH: " + plasmaSearchQuery.anonymizedQueryHashes(query[0]) + " - " + count + " links");

       

        // get the index container with the result vector

        TermSearch<WordReference> search = null;

        try {

            search = segment.termIndex().query(q, Word.words2hashesHandles(query[1]), null, Segment.wordReferenceFactory, maxdist);

        } catch (RowSpaceExceededException e) {

            Log.logException(e);

        }

        ReferenceContainer<WordReference> index = search.joined();

       

        Iterator<WordReference> i = index.entries();

        WordReference entry;

        int c = 0;

        Date lm;

        String lms;

        while (i.hasNext() && c < count) {

            entry = i.next();

            lm = new Date(entry.lastModified());

            lms = GenericFormatter.ANSIC_FORMATTER.format(lm);

            prop.put("event_" + c + "_start", lms); // like "Wed May 01 1963 00:00:00 GMT-0600"

            prop.put("event_" + c + "_end", lms); // like "Sat Jun 01 1963 00:00:00 GMT-0600"

            prop.put("event_" + c + "_isDuration", 0); // 0 (only a point) or 1 (period of time)

            prop.putHTML("event_" + c + "_title", "test"); // short title of the event

            prop.putHTML("event_" + c + "_description", ""); // long description of the event

            c++;

        }

        prop.put("event", c);

       

        // log

        yacyCore.log.logInfo("EXIT TIMELINE SEARCH: " +

                QueryParams.anonymizedQueryHashes(q) + " - " + joincount + " links found, " +

                prop.get("linkcount", "?") + " links selected, " +

                indexabstractContainercount + " index abstracts, " +

                (System.currentTimeMillis() - timestamp) + " milliseconds");

        return prop;

    }

}