/*
 * 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.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.concurrent.CountDownLatch;

import org.apache.commons.lang3.RandomStringUtils;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.test.junit.LoggerContextSource;
import org.apache.logging.log4j.plugins.Named;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Validate rolling with a file pattern that contains leading zeros for the increment.
 */
public class RollingAppenderCountTest extends AbstractRollingListenerTest {

    private static final String SOURCE = "src/test/resources/__files";
    private static final String DIR = "target/rolling_count";
    private static final String CONFIG = "log4j-rolling-count.xml";
    private static final String FILENAME = "onStartup.log";
    private static final String TARGET = "rolling_test.log.";
    private final CountDownLatch rollover = new CountDownLatch(16);

    @BeforeAll
    public static void beforeClass() throws Exception {
        final Path dir = Path.of(DIR);
        if (Files.exists(dir)) {
            try (final DirectoryStream<Path> directoryStream = Files.newDirectoryStream(dir)) {
                for (final Path path : directoryStream) {
                    Files.delete(path);
                }
                Files.delete(dir);
            }
        }
        if (Files.notExists(dir)) {
            Files.createDirectory(dir);
        }
        final Path target = dir.resolve(TARGET + System.currentTimeMillis());
        Files.copy(Paths.get(SOURCE, FILENAME), target, StandardCopyOption.COPY_ATTRIBUTES);
    }

    @Test
    @LoggerContextSource(value = CONFIG, timeout = 10)
    public void testLog(final @Named("LogTest") Logger logger, @Named("RollingFile") final RollingFileManager manager) throws Exception {
        manager.addRolloverListener(this);
        for (long i = 0; i < 60; ++i) {
            logger.info("Sequence: {}", i);
            logger.debug(RandomStringUtils.randomAscii(512));
            logger.debug(RandomStringUtils.randomAscii(512));
        }

        rollover.await();

        final File dir = new File(DIR);
        assertThat(dir).isNotEmptyDirectory();
        assertThat(dir.listFiles()).hasSize(17);
    }

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