/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.rest.root;

import org.elasticsearch.Build;
import org.elasticsearch.action.ActionResponse;
import org.elasticsearch.action.support.TransportAction;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.xcontent.ToXContentObject;
import org.elasticsearch.xcontent.XContentBuilder;

import java.io.IOException;
import java.util.Objects;

public class MainResponse extends ActionResponse implements ToXContentObject {

    private final String nodeName;
    private final String luceneVersion;
    private final ClusterName clusterName;
    private final String clusterUuid;
    private final Build build;

    public MainResponse(String nodeName, String luceneVersion, ClusterName clusterName, String clusterUuid, Build build) {
        this.nodeName = nodeName;
        this.luceneVersion = luceneVersion;
        this.clusterName = clusterName;
        this.clusterUuid = clusterUuid;
        this.build = build;
    }

    public String getNodeName() {
        return nodeName;
    }

    public String getLuceneVersion() {
        return luceneVersion;
    }

    public ClusterName getClusterName() {
        return clusterName;
    }

    public String getClusterUuid() {
        return clusterUuid;
    }

    public Build getBuild() {
        return build;
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        TransportAction.localOnly();
    }

    @Override
    public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
        builder.startObject();
        builder.field("name", nodeName);
        builder.field("cluster_name", clusterName.value());
        builder.field("cluster_uuid", clusterUuid);
        builder.startObject("version")
            .field("number", build.qualifiedVersion())
            .field("build_flavor", build.flavor())
            .field("build_type", build.type().displayName())
            .field("build_hash", build.hash())
            .field("build_date", build.date())
            .field("build_snapshot", build.isSnapshot())
            .field("lucene_version", luceneVersion)
            .field("minimum_wire_compatibility_version", build.minWireCompatVersion())
            .field("minimum_index_compatibility_version", build.minIndexCompatVersion())
            .endObject();
        builder.field("tagline", "You Know, for Search");
        builder.endObject();
        return builder;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        MainResponse other = (MainResponse) o;
        return Objects.equals(nodeName, other.nodeName)
            && Objects.equals(luceneVersion, other.luceneVersion)
            && Objects.equals(clusterUuid, other.clusterUuid)
            && Objects.equals(build, other.build)
            && Objects.equals(clusterName, other.clusterName);
    }

    @Override
    public int hashCode() {
        return Objects.hash(nodeName, luceneVersion, clusterUuid, build, clusterName);
    }

    @Override
    public String toString() {
        return "MainResponse{"
            + "nodeName='"
            + nodeName
            + '\''
            + ", luceneVersion="
            + luceneVersion
            + ", clusterName="
            + clusterName
            + ", clusterUuid='"
            + clusterUuid
            + '\''
            + ", build="
            + build
            + '}';
    }
}