/*

 * Copyright (c) 2018, 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.

 */

package jdk.security.logging;

import java.nio.file.Paths;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

public final class LogJvm {

    private final static String LOGGING_ENABLED= "LOGGING_ENABLED";

    private final static String LOGGING_DISABLED= "LOGGING_DISABLED";

    private final static boolean debug = false;

    private final List<String> expectedLogMessages = new ArrayList<>();

    private final Class<?> clazz;

    private final boolean loggingEnabled;

    public LogJvm(Class<?> clazz, String[] args) {

        this.clazz = clazz;

        this.loggingEnabled = Arrays.asList(args).contains(LOGGING_ENABLED);

        ensureLogging(args);

    }

    private void ensureLogging(String[] args) {

        for(String s : args) {

            if (s.equals(LOGGING_ENABLED) || s.equals(LOGGING_DISABLED)) {

                return;

            }

        }

        throw new RuntimeException(LogJvm.class.getName() +

            " requires command line parameter " + LOGGING_ENABLED +

            " or " + LOGGING_DISABLED);

    }

    public void addExpected(String logMsg) {

        expectedLogMessages.add(logMsg);

    }

    public void testExpected() throws Exception {

        OutputAnalyzer out = launchJVM();

        if (debug) {

            System.out.println("STDOUT DEBUG:\n " + out.getStdout());

            System.out.println("\nSTDERR DEBUG:\n " + out.getStderr());

        }

        if (loggingEnabled) {

            testLoggingEnabled(out);

        } else {

            testLoggingDisabled(out);

        }

    }

    public OutputAnalyzer launchJVM() throws Exception {

        List<String> args = new ArrayList<>();

        if (loggingEnabled) {

            args.add("-Djava.util.logging.config.file=" +

                Paths.get(System.getProperty("test.src", "."), "logging.properties"));

        }

        args.add("--add-exports");

        args.add("java.base/jdk.internal.event=ALL-UNNAMED");

        args.add(clazz.getName());

        System.out.println(args);

        OutputAnalyzer out = ProcessTools.executeTestJava(args.toArray(new String[0]));

        out.shouldHaveExitValue(0);

        return out;

    }

    private void testLoggingDisabled(OutputAnalyzer out) {

        for (String expected : expectedLogMessages) {

            out.shouldNotContain(expected);

        }

    }

    private void testLoggingEnabled(OutputAnalyzer out) {

        for (String expected : expectedLogMessages) {

            out.shouldContain(expected);

        }

    }

}