/*
 * 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.test.layout;

import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.config.Configurator;
import org.apache.logging.log4j.core.test.categories.Layouts;
import org.apache.logging.log4j.core.test.junit.CleanFolders;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;

/**
 * Tests https://issues.apache.org/jira/browse/LOG4J2-1482
 */
@Category(Layouts.Csv.class)
public abstract class Log4j2_1482_Test {

    static final String CONFIG_LOCATION = "log4j2-1482.xml";

    static final String FOLDER = "target/log4j2-1482";

    private static final int LOOP_COUNT = 10;

    static void assertFileContents(final int runNumber) throws IOException {
        final Path path = Paths.get(FOLDER + "/audit.tmp");
        final List<String> lines = Files.readAllLines(path, Charset.defaultCharset());
        int i = 1;
        final int size = lines.size();
        for (final String string : lines) {
            if (string.startsWith(",,")) {
                final Path folder = Paths.get(FOLDER);
                final File[] files = folder.toFile().listFiles();
                Arrays.sort(files);
                System.out.println("Run " + runNumber + ": " + Arrays.toString(files));
                Assert.fail(
                        String.format("Run %,d, line %,d of %,d: \"%s\" in %s", runNumber, i++, size, string, lines));
            }
        }
    }

    @Rule
    public CleanFolders cleanFolders = new CleanFolders(FOLDER);

    protected abstract void log(int runNumber);

    private void loopingRun(final int loopCount) throws IOException {
        for (int i = 1; i <= loopCount; i++) {
            try (final LoggerContext loggerContext =
                    Configurator.initialize(getClass().getName(), CONFIG_LOCATION)) {
                log(i);
            }
            assertFileContents(i);
        }
    }

    @Test
    public void testLoopingRun() throws IOException {
        loopingRun(LOOP_COUNT);
    }

    @Test
    public void testSingleRun() throws IOException {
        loopingRun(1);
    }
}
