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/*
 * Copyright 2020 StreamThoughts.
 *
 * 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 io.streamthoughts.jikkou.kafka.internals;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import org.apache.kafka.clients.admin.AdminClient;
import org.apache.kafka.clients.admin.AdminClientConfig;
import org.apache.kafka.clients.admin.TopicListing;
import org.apache.kafka.common.Node;
import org.jetbrains.annotations.NotNull;

/**
 * Class which is used to create a new {@link AdminClient} instance using tool arguments.
 */
public class KafkaUtils {

    public static AdminClient newAdminClient(@NotNull final Properties clientConfigProps){
        return AdminClient.create(clientConfigProps);
    }

    public static CompletableFuture> listBrokers(final AdminClient client) {
        Objects.requireNonNull(client, "client cannot be null");
        return Futures.toCompletableFuture(client.describeCluster().nodes());
    }

    public static CompletableFuture> listTopics(final AdminClient client) {
        Objects.requireNonNull(client, "client cannot be null");
        return Futures.toCompletableFuture(client.listTopics().listings());
    }

    public static boolean waitForKafkaBrokers(final AdminClient client, final KafkaBrokersReady.Options options) {
        return new KafkaBrokersReady(options).waitForBrokers(client);
    }

    public static Map getAdminClientConfigs(final Map configs) {
        return getConfigsForKeys(configs, AdminClientConfig.configNames());
    }

    private static Map getConfigsForKeys(final Map configs,
                                                         final Set keys) {
        final Map parsed = new HashMap<>();
        for (final String configName : keys) {
            if (configs.containsKey(configName)) {
                parsed.put(configName, configs.get(configName));
            }
        }
        return parsed;
    }
 }