/*

 * Copyright (c) 2016, 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.PrintStream;

import java.io.PrintWriter;

import java.io.StringWriter;

import java.util.Arrays;

import java.util.List;

import java.util.spi.ToolProvider;

import java.util.stream.Collectors;

/**

 * JdepsRunner class to invoke jdeps with the given command line argument

 */

public class JdepsRunner {

    private static final ToolProvider JDEPS_TOOL = ToolProvider.findFirst("jdeps")

        .orElseThrow(() -> new RuntimeException("jdeps tool not found"));

    public static JdepsRunner run(String... args) {

        JdepsRunner jdeps = new JdepsRunner(args);

        int rc = jdeps.run(true);

        if (rc != 0)

           throw new Error("jdeps failed: rc=" + rc);

        return jdeps;

    }

    final StringWriter stdout = new StringWriter();

    final StringWriter stderr = new StringWriter();

    final String[] args;

    public JdepsRunner(String... args) {

        System.out.println("jdeps " + Arrays.stream(args)

                                            .collect(Collectors.joining(" ")));

        this.args = args;

    }

    public JdepsRunner(List<String> args) {

        this(args.toArray(new String[0]));

    }

    public int run() {

        return run(false);

    }

    public int run(boolean showOutput) {

        try (PrintWriter pwout = new PrintWriter(stdout);

             PrintWriter pwerr = new PrintWriter(stderr)) {

            int rc = JDEPS_TOOL.run(pwout, pwerr, args);

            if (showOutput) {

                printStdout(System.out);

                printStderr(System.out);

            }

            return rc;

        }

    }

    public boolean outputContains(String s) {

    }

    public void printStdout(PrintStream stream) {

        stream.println(stdout.toString());

    }

    public void printStderr(PrintStream stream) {

        stream.println(stderr.toString());

    }

    public String[] output() {

        String lineSep = System.getProperty("line.separator");

        return stdout.toString().split(lineSep);

    }

}