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/*
 * Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.wss.provider.wsit;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import jakarta.security.auth.message.config.AuthConfigFactory.RegistrationContext;

/*
 * Each entry is either a constructor entry or a registration entry.
 * Use nulls rather than empty Strings or Lists for fields that
 * have no value.
 *
 * This class will not be used outside of its package.
 *
 * @author Bobby Bissett
 */
final class EntryInfo {
    private final String className;
    private final Map properties;
    private List regContexts;

    /*
     * This will create a constructor entry. The className
     * must not be null.
     */
    EntryInfo(String className, Map properties) {
        if (className == null) {
            throw new IllegalArgumentException(
                "Class name for registration entry cannot be null");
        }
        this.className = className;
        this.properties = properties;
    }

    /*
     * This will create a registration entry. The list of
     * registration contexts must not be null or empty. Each registration
     * context will contain at least a non-null layer or appContextId.
     */
    EntryInfo(String className, Map properties,
        List ctxs) {

        if (ctxs == null || ctxs.isEmpty()) {
            throw new IllegalArgumentException(
                "Registration entry must contain one or" +
                "more registration contexts");
        }
        this.className = className;
        this.properties = properties;
        this.regContexts = ctxs;
    }

    /*
     * A helper method for creating a registration entry with
     * one registration context. If the context is null, this
     * entry is a constructor entry.
     */
    EntryInfo(String className, Map properties,
        RegistrationContext ctx) {

        this.className = className;
        this.properties = properties;
        if (ctx != null) {
            RegistrationContext ctxImpl =
                new RegistrationContextImpl(ctx.getMessageLayer(),
                ctx.getAppContext(), ctx.getDescription(), ctx.isPersistent());
            List newList =
                    new ArrayList<>(1);
            newList.add(ctxImpl);
            this.regContexts = newList;
        }
    }

    boolean isConstructorEntry() {
        return (regContexts == null);
    }

    String getClassName() {
        return className;
    }

    Map getProperties() {
        return properties;
    }

    List getRegContexts() {
        return regContexts;
    }

    /*
     * Compares an entry info to this one. They are
     * considered equal if:
     * - they are both constructor or are both registration entries
     * - the classnames are equal or are both null
     * - the property maps are equal or are both null
     *
     * If the entry is a registration entry, registration
     * contexts are not considered for our purposes. For
     * instance, we may want to get a certain registration
     * entry in order to add a registration context to it.
     *
     * @see com.sun.enterprise.security.jmac.config.RegStoreFileParser
     */
    boolean equals(EntryInfo target) {
        if (target == null) {
            return false;
        }
        return ( !(isConstructorEntry() ^ target.isConstructorEntry()) &&
            matchStrings(className, target.getClassName()) &&
            matchMaps(properties, target.getProperties()) );
    }

    /*
     * Utility method for comparing strings such that
     * two null strings are considered "equal."
     */
    static boolean matchStrings(String s1, String s2) {
        if (s1 == null && s2 == null) {
            return true;
        }
        if (s1 == null || s2 == null) {
            return false;
        }
        return s1.equals(s2);
    }

    /*
     * Utility method for comparing maps such that
     * two null maps are considered "equal."
     */
    static boolean matchMaps(Map m1, Map m2) {
        if (m1 == null && m2 == null) {
            return true;
        }
        if (m1 == null || m2 == null) {
            return false;
        }
        return m1.equals(m2);
    }


}