/*
 * Copyright (c) 2019, Red Hat, Inc. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package org.openjdk.backports.census;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Census {

    public static List<String> userIds() {
        try {
            Document doc = Jsoup.connect("http://openjdk.org/census").get();
            for (Element row : doc.body().select("div#main > table > tbody > tr")) {
                if (row.toString().contains("People")) {
                    Element td = row.select("td").last();
                    List<String> result = new ArrayList<>();
                    for (Element links : td.select("a")) {
                        result.add(links.text());
                    }
                    return result;
                }
            }

        } catch (IOException e) {
            System.out.println("ERROR: Cannot read Census");
            e.printStackTrace();
        }
        return Collections.emptyList();
    }

}
