/*

 * Copyright (c) 2013, 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.  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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package com.sun.tools.jdeps;

import java.io.IOException;

import java.lang.module.ModuleDescriptor;

import java.util.Arrays;

import java.util.Comparator;

import java.util.HashMap;

import java.util.HashSet;

import java.util.Map;

import java.util.Optional;

import java.util.Set;

/**

 * Build the profile information.

 */

enum Profile {

    COMPACT1("compact1", 1, "java.logging",

                            "java.scripting"),

    COMPACT2("compact2", 2, "java.rmi",

                            "java.sql",

                            "java.xml",

                            "jdk.xml.dom",

                            "jdk.httpserver"),

    COMPACT3("compact3", 3, "java.smartcardio",

                            "java.compiler",

                            "java.instrument",

                            "java.management",

                            "java.naming",

                            "java.prefs",

                            "java.security.jgss",

                            "java.security.sasl",

                            "java.sql.rowset",

                            "java.xml.crypto",

                            "jdk.management",

                            "jdk.naming.dns",

                            "jdk.naming.rmi",

                            "jdk.sctp",

                            "jdk.security.auth");

    final String name;

    final int profile;

    final String[] mnames;

    final Map<String, Module> modules = new HashMap<>();

    Profile(String name, int profile, String... mnames) {

        this.name = name;

        this.profile = profile;

        this.mnames = mnames;

    }

    public String profileName() {

        return name;

    }

    @Override

    public String toString() {

        return mnames[0];

    }

    public static int getProfileCount() {

        return JDK.isEmpty() ? 0 : Profile.values().length;

    }

    /**

     * Returns the Profile for the given package name; null if not found.

     */

    public static Profile getProfile(String pn) {

        for (Profile p : Profile.values()) {

            for (Module m : p.modules.values()) {

                if (m.packages().contains(pn)) {

                    return p;

                }

            }

        }

        return null;

    }

    /*

     * Returns the Profile for a given Module; null if not found.

     */

    public static Profile getProfile(Module m) {

        for (Profile p : Profile.values()) {

            if (p.modules.containsValue(m)) {

                return p;

            }

        }

        return null;

    }

    private final static Set<Module> JDK = new HashSet<>();

    static synchronized void init(Map<String, Module> systemModules) {

        Arrays.stream(Profile.values()).forEach(p ->

            // this includes platform-dependent module that may not exist

            Arrays.stream(p.mnames)

                  .filter(systemModules::containsKey)

                  .map(systemModules::get)

                  .forEach(m -> p.addModule(systemModules, m)));

        // JDK modules should include full JRE plus other jdk.* modules

        // Just include all installed modules.  Assume jdeps is running

        // in JDK image

        JDK.addAll(systemModules.values());

    }

    private void addModule(Map<String, Module> systemModules, Module module) {

        modules.put(module.name(), module);

        module.descriptor().requires().stream()

              .map(ModuleDescriptor.Requires::name)

              .map(systemModules::get)

              .forEach(m -> modules.put(m.name(), m));

    }

    // for debugging

    public static void main(String[] args) throws IOException {

        // initialize Profiles

        new JdepsConfiguration.Builder().allModules().build();

        // find platform modules

        if (Profile.getProfileCount() == 0) {

            System.err.println("No profile is present in this JDK");

        }

        for (Profile p : Profile.values()) {

            String profileName = p.name;

            System.out.format("%2d: %-10s  %s%n", p.profile, profileName, p.modules);

        }

        System.out.println("All JDK modules:-");

        JDK.stream().sorted(Comparator.comparing(Module::name))

    }

}