/*
 * 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
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 * questions.
 */

package jdk.jpackage.internal;

import java.io.File;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.List;

final class ModuleManager {
    private final List<String> folders = new ArrayList<String>();

    enum SearchType {UnnamedJar, ModularJar, Jmod, ExplodedModule}

    ModuleManager(String folders) {
        super();
        String lfolders = folders.replaceAll("^\"|\"$", "");
        List<Path> paths = new ArrayList<Path>();

        for (String folder :
                Arrays.asList(lfolders.split(File.pathSeparator))) {
            File file = new File(folder);
            paths.add(file.toPath());
        }

        initialize(paths);
    }

    ModuleManager(List<Path> Paths) {
        super();
        initialize(Paths);
    }

    private void initialize(List<Path> Paths) {
        for (Path path : Paths) {
            folders.add(path.toString().replaceAll("^\"|\"$", ""));
        }
    }

    List<ModFile> getModules(EnumSet<SearchType> Search) {
        List<ModFile> result = new ArrayList<ModFile>();

        for (String folder : folders) {
            result.addAll(getAllModulesInDirectory(folder, Search));
        }

        return result;
    }

    private static List<ModFile> getAllModulesInDirectory(String folder,
            EnumSet<SearchType> Search) {
        List<ModFile> result = new ArrayList<ModFile>();
        File lfolder = new File(folder);
        File[] files = { lfolder };
        if (lfolder.isDirectory()) {
            files = lfolder.listFiles();
        }

        if (files != null) {
            for (File file : files) {
                ModFile modFile = new ModFile(file);

                switch (modFile.getModType()) {
                    case Unknown:
                        break;
                    case UnnamedJar:
                        if (Search.contains(SearchType.UnnamedJar)) {
                            result.add(modFile);
                        }
                        break;
                    case ModularJar:
                        if (Search.contains(SearchType.ModularJar)) {
                            result.add(modFile);
                        }
                        break;
                    case Jmod:
                        if (Search.contains(SearchType.Jmod)) {
                            result.add(modFile);
                        }
                        break;
                    case ExplodedModule:
                        if (Search.contains(SearchType.ExplodedModule)) {
                            result.add(modFile);
                        }
                        break;
                }
            }
        }
        return result;
    }
}