/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.ignite.internal.security.authentication;

import org.apache.ignite.configuration.NamedListView;
import org.apache.ignite.internal.security.authentication.basic.BasicAuthenticationProviderView;
import org.apache.ignite.internal.security.authentication.basic.BasicProviderNotFoundException;
import org.apache.ignite.internal.security.authentication.configuration.AuthenticationProviderView;

/**
 * Utility class for authentication.
 */
public final class AuthenticationUtils {
    private AuthenticationUtils() {
        // No-op.
    }

    /**
     * Find the name of the basic authentication provider.
     *
     * @param providerViews Authentication provider views.
     * @return Name of the basic authentication provider.
     */
    public static String findBasicProviderName(NamedListView<? extends AuthenticationProviderView> providerViews) {
        return findBasicProvider(providerViews).name();
    }

    /**
     * Find the basic authentication provider.
     *
     * @param providerViews Authentication provider views.
     * @return Basic authentication provider.
     */
    public static BasicAuthenticationProviderView findBasicProvider(NamedListView<? extends AuthenticationProviderView> providerViews) {
        return providerViews.stream()
                .filter(BasicAuthenticationProviderView.class::isInstance)
                .map(BasicAuthenticationProviderView.class::cast)
                .findFirst()
                .orElseThrow(BasicProviderNotFoundException::new);
    }
}
