/*
 * 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.kafka.clients.admin;

import java.util.Collections;
import java.util.Objects;
import java.util.Optional;

/**
 * A detailed description of a single share group member in the cluster.
 */
public class ShareMemberDescription {
    private final String memberId;
    private final Optional<String> rackId;
    private final String clientId;
    private final String host;
    private final ShareMemberAssignment assignment;
    private final int memberEpoch;

    public ShareMemberDescription(
        String memberId,
        Optional<String> rackId,
        String clientId,
        String host,
        ShareMemberAssignment assignment,
        int memberEpoch
    ) {
        this.memberId = memberId == null ? "" : memberId;
        this.rackId = rackId;
        this.clientId = clientId == null ? "" : clientId;
        this.host = host == null ? "" : host;
        this.assignment = assignment == null ?
            new ShareMemberAssignment(Collections.emptySet()) : assignment;
        this.memberEpoch = memberEpoch;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        ShareMemberDescription that = (ShareMemberDescription) o;
        return memberId.equals(that.memberId) &&
            rackId.equals(that.rackId) &&
            clientId.equals(that.clientId) &&
            host.equals(that.host) &&
            assignment.equals(that.assignment) &&
            memberEpoch == that.memberEpoch;
    }

    @Override
    public int hashCode() {
        return Objects.hash(memberId, rackId, clientId, host, assignment, memberEpoch);
    }

    /**
     * The consumer id of the group member.
     */
    public String consumerId() {
        return memberId;
    }

    /**
     * The rack id of the group member.
     */
    public Optional<String> rackId() {
        return rackId;
    }

    /**
     * The client id of the group member.
     */
    public String clientId() {
        return clientId;
    }

    /**
     * The host where the group member is running.
     */
    public String host() {
        return host;
    }

    /**
     * The assignment of the group member.
     */
    public ShareMemberAssignment assignment() {
        return assignment;
    }

    /**
     * The epoch of the group member.
     */
    public int memberEpoch() {
        return memberEpoch;
    }

    @Override
    public String toString() {
        return "(memberId=" + memberId +
            ", rackId=" + rackId.orElse("null") +
            ", clientId=" + clientId +
            ", host=" + host +
            ", assignment=" + assignment +
            ", memberEpoch=" + memberEpoch +
            ")";
    }
}
