/*

 * Copyright (c) 2016, 2019, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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

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 */

package jdk.jpackage.internal;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.util.zip.ZipEntry;

import java.util.zip.ZipInputStream;

final class ModFile {

    private final String filename;

    private final ModType moduleType;

    enum JarType {All, UnnamedJar, ModularJar}

    enum ModType {

            Unknown, UnnamedJar, ModularJar, Jmod, ExplodedModule}

    ModFile(File aFile) {

        super();

        filename = aFile.getPath();

        moduleType = getModType(aFile);

    }

    String getModName() {

        File file = new File(getFileName());

        // do not try to remove extension for directories

        return moduleType == ModType.ExplodedModule ?

                file.getName() : getFileWithoutExtension(file.getName());

    }

    String getFileName() {

        return filename;

    }

    ModType getModType() {

        return moduleType;

    }

    private static ModType getModType(File aFile) {

        ModType result = ModType.Unknown;

        String filename = aFile.getAbsolutePath();

        if (aFile.isFile()) {

            if (filename.endsWith(".jmod")) {

                result = ModType.Jmod;

            }

            else if (filename.endsWith(".jar")) {

                JarType status = isModularJar(filename);

                if (status == JarType.ModularJar) {

                    result = ModType.ModularJar;

                }

                else if (status == JarType.UnnamedJar) {

                    result = ModType.UnnamedJar;

                }

            }

        }

        else if (aFile.isDirectory()) {

            File moduleInfo = new File(

                    filename + File.separator + "module-info.class");

            if (moduleInfo.exists()) {

                result = ModType.ExplodedModule;

            }

        }

        return result;

    }

    private static JarType isModularJar(String FileName) {

        JarType result = JarType.All;

            result = JarType.UnnamedJar;

                }

            }

        }

        return result;

    }

    private static String getFileWithoutExtension(String FileName) {

        return FileName.replaceFirst("[.][^.]+$", "");

    }

}