/*

 * 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.

 */

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.PrintWriter;

public class Hello {

    private static final String MSG = "jpackage test application";

    private static final int EXPECTED_NUM_OF_PARAMS = 3; // Starts at 1

    public static void main(String[] args) {

        printToStdout(args);

        if (args.length == 1) { // Called via file association

            printToFile(args);

        }

    }

    private static void printToStdout(String[] args) {

        System.out.println(MSG);

        System.out.println("args.length: " + args.length);

        for (String arg : args) {

            System.out.println(arg);

        }

        for (int index = 1; index <= EXPECTED_NUM_OF_PARAMS; index++) {

            String value = System.getProperty("param" + index);

            if (value != null) {

                System.out.println("-Dparam" + index + "=" + value);

            }

        }

    }

    private static void printToFile(String[] args) {

        File inputFile = new File(args[0]);

        String outputFile = inputFile.getParent() + File.separator + "appOutput.txt";

        File file = new File(outputFile);

        try (PrintWriter out

                = new PrintWriter(new BufferedWriter(new FileWriter(file)))) {

            out.println(MSG);

            out.println("args.length: " + args.length);

            for (String arg : args) {

                out.println(arg);

            }

            for (int index = 1; index <= EXPECTED_NUM_OF_PARAMS; index++) {

                String value = System.getProperty("param" + index);

                if (value != null) {

                    out.println("-Dparam" + index + "=" + value);

                }

            }

        } catch (Exception ex) {

            System.err.println(ex.getMessage());

        }

    }

}