package org.activityinfo.server.report.generator.map.cluster;

/*
 * #%L
 * ActivityInfo Server
 * %%
 * Copyright (C) 2009 - 2013 UNICEF
 * %%
 * 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 3 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, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import org.activityinfo.legacy.shared.model.SiteDTO;
import org.activityinfo.legacy.shared.reports.model.PointValue;
import org.activityinfo.server.report.generator.map.RadiiCalculator;
import org.activityinfo.server.report.generator.map.TiledMap;

import java.util.ArrayList;
import java.util.List;

/**
 * Does not cluster at all, rather maps points 1:1 to clusters
 */
public class NullClusterer implements Clusterer {
    private RadiiCalculator radiiCalculator;

    public NullClusterer(RadiiCalculator radiiCalculator) {
        this.radiiCalculator = radiiCalculator;
    }

    /**
     * Maps each Point to a cluster, not performing an actual
     * clued.report.model.clustering.Clusteristering algorithm whatsoever
     *
     * @see org.activityinfo.sharng#cluster(java.util.List,
     * org.activityinfo.server.report.generator.map.RadiiCalculator)
     */
    @Override
    public List<Cluster> cluster(TiledMap map, List<PointValue> points) {
        List<Cluster> clusters = new ArrayList<Cluster>();

        // No actual clustering taking place, simply map each point to a new
        // cluster
        for (PointValue point : points) {
            clusters.add(new Cluster(point));
        }

        radiiCalculator.calculate(clusters);
        return clusters;
    }

    @Override
    public boolean isMapped(SiteDTO site) {
        return site.hasLatLong();
    }
}