/*

 * Copyright (c) 2015, 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.

 */

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.math.BigDecimal;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.logging.Level;

import java.util.logging.Logger;

import jdk.test.lib.apps.LingeredApp;

import jdk.testlibrary.JDKToolLauncher;

import jdk.testlibrary.Utils;

public class TmtoolTestScenario {

    private final ArrayList<String> toolOutput = new ArrayList<String>();

    private LingeredApp theApp = null;

    private final String toolName;

    private final String[] toolArgs;

    /**

     *  @param toolName - name of tool to test

     *  @param toolArgs - tool arguments

     *  @return the object

     */

    public static TmtoolTestScenario create(String toolName, String... toolArgs) {

        return new TmtoolTestScenario(toolName, toolArgs);

    }

    /**

     * @return STDOUT of tool

     */

    public List<String> getToolOutput() {

        return toolOutput;

    }

    /**

     *

     * @return STDOUT of test app

     */

    public List<String> getAppOutput() {

        return theApp.getAppOutput();

    }

    /**

     * @return Value of the app output with -XX:+PrintFlagsFinal as a map.

     */

    public Map<String, String>  parseFlagsFinal() {

        List<String> astr = theApp.getAppOutput();

        Map<String, String> vmMap = new HashMap<String, String>();

        for (String line : astr) {

            String[] lv = line.trim().split("\\s+");

            try {

                vmMap.put(lv[1], lv[3]);

            } catch (ArrayIndexOutOfBoundsException ex) {

                // ignore mailformed lines

            }

        }

        return vmMap;

    }

    /**

     *

     * @param vmArgs  - vm and java arguments to launch test app

     * @return exit code of tool

     */

    public int launch(List<String> vmArgs) {

        System.out.println("Starting LingeredApp");

        try {

            try {

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

                vmArgsExtended.add("-XX:+UsePerfData");

                vmArgsExtended.addAll(vmArgs);

                theApp = LingeredApp.startApp(vmArgsExtended);

                System.out.println("Starting " + toolName + " against " + theApp.getPid());

                for (String cmd : toolArgs) {

                    launcher.addToolArg(cmd);

                }

                launcher.addToolArg(Long.toString(theApp.getPid()));

                ProcessBuilder processBuilder = new ProcessBuilder(launcher.getCommand());

                processBuilder.redirectError(ProcessBuilder.Redirect.INHERIT);

                Process toolProcess = processBuilder.start();

                // By default child process output stream redirected to pipe, so we are reading it in foreground.

                BufferedReader reader = new BufferedReader(new InputStreamReader(toolProcess.getInputStream()));

                String line;

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

                    toolOutput.add(line.trim());

                }

                toolProcess.waitFor();

                return toolProcess.exitValue();

            } finally {

                LingeredApp.stopApp(theApp);

            }

        } catch (IOException | InterruptedException ex) {

            throw new RuntimeException("Test ERROR " + ex, ex);

        }

    }

    public void launch(String... appArgs) throws IOException {

        launch(Arrays.asList(appArgs));

    }

    private TmtoolTestScenario(String toolName, String[] toolArgs) {

        this.toolName = toolName;

        this.toolArgs = toolArgs;

    }

}