/*
 * Copyright 2017
 * Ubiquitous Knowledge Processing (UKP) Lab
 * Technische Universität Darmstadt
 *
 * 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.dkpro.core.decompounding.web1t;

import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.File;
import java.io.IOException;

import org.junit.jupiter.api.Test;

public class FinderPerformanceTest
{

    /**
     * Test the finder performace on the generated web1t index Time is printed
     * on the console.
     */
    @Test
    public void testPerformance1() throws IOException
    {
        File file = new File("/home/jens/Desktop/web1tIndex4");
        if (!file.exists()) {
            return;
        }
        File jWeb1T = new File("/home/likewise-open/UKP/santos/UKP/Library/DKPro/web1t/de");
        Finder f = new Finder(file, jWeb1T);
        String[] words = new String[] { "hallo welt", "wie geht es euch",
                "alpha", "zutun", "lasst uns nach hause gehen", "rennen" };
        long time = 0;

        for (String word : words) {
            long start = System.currentTimeMillis();
            assertTrue(f.find(word).size() > 0);
            long end = System.currentTimeMillis();
            time += end - start;
            System.out.println("Time for '" + word + "' (ms): "
                    + (end - start));
        }

        System.out.println("  -> Average time (ms): "
                + ((float) time / (float) words.length));
    }

    @Test
    public void testPerformance2() throws IOException
    {
        File file = new File("/home/jens/Desktop/web1tIndex4");
        File jWeb1T = new File("/home/likewise-open/UKP/santos/UKP/Library/DKPro/web1t/de");
        if (!file.exists()) {
            return;
        }

        Finder f = new Finder(file, jWeb1T);

        String[] words = { "filmtauscher", "minimalanforderungen",
                "berufungsinstanz" };

        long time = 0;
        long count = 0;
        for (String word : words) {
            for (int i = 1; i < word.length(); i++) {
                String searchFor = word.substring(0, i);

                long start = System.currentTimeMillis();
                f.contains(searchFor);
                long end = System.currentTimeMillis();

                time += end - start;
                count++;

                System.out.println("Time for '" + searchFor + "' (ms): "
                        + (end - start));
            }
        }

        System.out.println("Average time (ms): "
                + ((float) time / (float) count));
    }
}
