/*
 * 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.regex.Pattern;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.appender.RollingFileAppender;
import org.apache.logging.log4j.core.test.junit.LoggerContextRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.RuleChain;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertNotNull;

/**
 *
 */
public class RollingAppenderDirectCustomDeleteActionTest implements RolloverListener {

    private static final String CONFIG = "log4j-rolling-direct-with-custom-delete.xml";
    private static final String DIR = "target/rolling-direct-with-delete/test";

    private final LoggerContextRule loggerContextRule = LoggerContextRule.createShutdownTimeoutLoggerContextRule(CONFIG);

    @Rule
    public RuleChain chain = loggerContextRule.withCleanFoldersRule(DIR);

    private boolean fileFound = false;

    @Test
    public void testAppender() throws Exception {
        final Logger logger = loggerContextRule.getLogger();
        final RollingFileAppender app = loggerContextRule.getAppender("RollingFile");
        assertNotNull(app,"No RollingFileAppender");
        app.getManager().addRolloverListener(this);
        // Trigger the rollover
        for (int i = 0; i < 10; ++i) {
            // 30 chars per message: each message triggers a rollover
            logger.debug("This is a test message number " + i); // 30 chars:
        }
        Thread.sleep(100); // Allow time for rollover to complete

        final File dir = new File(DIR);
        assertTrue("Dir " + DIR + " should exist", dir.exists());
        assertTrue("Dir " + DIR + " should contain files", dir.listFiles().length > 0);

        final File[] files = dir.listFiles();
        assertNotNull(files, "No fiels");
        System.out.println(files[0].getName());
        final long count = Arrays.stream(files).filter((f) -> f.getName().endsWith("test-4.log")).count();
        assertTrue("Deleted file was not created", fileFound);
        assertEquals("File count expected: 0, actual: " + count, 0, count);
    }

    public static void main(final String[] args) {
        final Pattern p = Pattern.compile("test-.?[2,4,6,8,0]\\.log\\.gz");
        for (int i = 0; i < 16; i++) {
            final String str = "test-" + i + ".log.gz";
            final java.util.regex.Matcher m = p.matcher(str);
            System.out.println(m.matches() + ": " + str);
        }
    }

    @Override
    public void rolloverTriggered(final String fileName) {
        if (fileName.endsWith("test-4.log")) {
            fileFound = true;
        }
    }

    @Override
    public void rolloverComplete(final String fileName) {

    }
}
