/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you 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.apache.logging.log4j.core.appender.rolling;

import java.io.File;
import java.util.Arrays;
import java.util.Random;
import java.util.concurrent.CountDownLatch;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.test.junit.LoggerContextSource;
import org.apache.logging.log4j.plugins.Named;
import org.apache.logging.log4j.test.junit.CleanUpDirectories;
import org.junit.jupiter.api.Test;

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;

/**
 * LOG4J2-1804.
 */
public class RollingAppenderCronAndSizeTest extends AbstractRollingListenerTest {

  private static final String CONFIG = "log4j-rolling-cron-and-size.xml";

    private static final String DIR = "target/rolling-cron-size";
    // we'll probably roll over more than 30 times, but that's a sufficient amount of test data
    private final CountDownLatch rollover = new CountDownLatch(30);

    @Test
    @CleanUpDirectories(DIR)
    @LoggerContextSource(value = CONFIG, timeout = 10)
    public void testAppender(final Logger logger, @Named("RollingFile") final RollingFileManager manager) throws Exception {
        manager.addRolloverListener(this);
        final Random rand = new Random(currentTimeMillis.get());
        for (int j=0; j < 100; ++j) {
            final int count = rand.nextInt(100);
            for (int i = 0; i < count; ++i) {
                logger.debug("This is test message number {}", i);
            }
            currentTimeMillis.addAndGet(rand.nextInt(50));
        }

        rollover.await();

        final File dir = new File(DIR);
        assertThat(dir).isNotEmptyDirectory();
        assertThat(dir).isDirectoryContaining("glob:**.log");
        final File[] files = dir.listFiles();
        assertNotNull(files);
        Arrays.sort(files);
        int fileCounter = 0;
        String previous = "";
        for (final File file: files) {
            final String actual = file.getName();
            final String[] fileParts = actual.split("[_.]");
            fileCounter = previous.equals(fileParts[1]) ? ++fileCounter : 1;
            previous = fileParts[1];
            assertEquals(Integer.toString(fileCounter), fileParts[2],
                    "Incorrect file name. Expected counter value of " + fileCounter + " in " + actual);
        }

    }

    @Override
    public void rolloverComplete(final String fileName) {
        rollover.countDown();
    }
}
