/*

 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug     6381464

 * @summary Test the custom simple formatter output

 *

 * @run main/othervm SimpleFormatterFormat

 */

import java.io.*;

import java.util.logging.*;

import java.util.regex.*;

public class SimpleFormatterFormat {

    private static final String key = "java.util.logging.SimpleFormatter.format";

    private static final String origFormat = System.getProperty(key);

    private static final PrintStream err = System.err;

    public static void main(String[] args) throws Exception {

        try {

            File dir = new File(System.getProperty("user.dir", "."));

            File log = new File(dir, "simpleformat.txt");

            java.nio.file.Files.deleteIfExists(log.toPath());

            PrintStream logps = new PrintStream(log);

            System.setProperty(key, "%3$s:%4$s: %5$s [%1$tc] source: %2$s%6$s%n");

            writeLogRecords(logps);

            checkLogRecords(log);

        } finally {

            if (origFormat == null) {

                System.clearProperty(key);

            } else {

                System.setProperty(key, origFormat);

            }

            System.setErr(err);

       }

    }

    private static String[] loggers = new String[] {

        "test.foo",

        "test.foo",

        "test.bar",

        "test.bar"

    };

    private static String[] messages = new String[] {

        "severe hello world",

        "warning lost connection",

        "info welcome",

        "warning exception thrown",

    };

    private static void writeLogRecords(PrintStream logps) throws Exception {

        try {

            System.setErr(logps);

            Logger foo = Logger.getLogger("test.foo");

            foo.log(Level.SEVERE, "{0} {1} {2}", new Object[] {"severe", "hello", "world"});

            foo.warning(messages[1]);

            Logger bar = Logger.getLogger("test.bar");

            bar.finest("Dummy message");

            bar.info(messages[2]);

            bar.log(Level.WARNING, messages[3], new IllegalArgumentException());

        } finally {

            logps.flush();

            logps.close();

            System.setErr(err);

        }

    }

    private static void checkLogRecords(File log) throws Exception {

        System.out.println("Checking log records in file: " + log);

        Pattern p = Pattern.compile("([\\.a-zA-Z:]+) (.*) \\[.*\\] source: (.*)");

        try (FileInputStream in = new FileInputStream(log)) {

            BufferedReader reader = new BufferedReader(new InputStreamReader(in));

            String line;

            int i = 0;

            while (i < messages.length &&

                      (line = reader.readLine()) != null) {

                String expectedLogger = loggers[i];

                String expectedMsg = messages[i];

                i++;

                line = line.trim();

                System.out.println(line);

                Matcher m = p.matcher(line);

                if (!m.matches()) {

                    throw new RuntimeException("Unexpected output format");

                }

                if (m.groupCount() != 3) {

                    throw new RuntimeException("Unexpected group count = " +

                        m.groupCount());

                }

                // verify logger name and level

                String[] ss = m.group(1).split(":");

                int len = ss.length;

                if (len != 2) {

                    throw new RuntimeException("Unexpected logger name and level" +

                        m.group(1));

                }

                verify(expectedLogger, expectedMsg, ss[0], ss[1], m.group(2), m.group(3));

            }

            // expect IllegalArgumentException following it

            line = reader.readLine().trim();

            if (!line.equals("java.lang.IllegalArgumentException")) {

                throw new RuntimeException("Invalid line: " + line);

            }

        }

    }

    private static void verify(String expectedLogger, String expectedMsg,

                               String logger, String level,

                               String msg, String source) {

        if (!logger.equals(expectedLogger)) {

            throw new RuntimeException("Unexpected logger: " + logger);

        }

        if (!msg.equals(expectedMsg)) {

            throw new RuntimeException("Unexpected message: " + msg);

        }

        String[] ss = expectedMsg.split("\\s+");

        String expectedLevel = ss[0].toUpperCase();

        if (!level.equals(expectedLevel)) {

            throw new RuntimeException("Unexpected level: " + level);

        }

        ss = source.split("\\s+");

        int len = ss.length;

        if (!(len == 2 &&

              ss[0].equals("SimpleFormatterFormat") &&

              ss[1].equals("writeLogRecords"))) {

            throw new RuntimeException("Unexpected source: " + source);

        }

    }

}