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/*
 * 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 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 or the Server
 * Side Public License, v 1.
 */
package org.elasticsearch.client.indices;

import org.elasticsearch.client.core.BroadcastResponse;
import org.elasticsearch.core.Tuple;
import org.elasticsearch.xcontent.ConstructingObjectParser;
import org.elasticsearch.xcontent.ParseField;
import org.elasticsearch.xcontent.XContentParser;

import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import static org.elasticsearch.xcontent.ConstructingObjectParser.constructorArg;

/**
 * The response object that will be returned when reloading analyzers
 */
public class ReloadAnalyzersResponse extends BroadcastResponse {

    private final Map reloadDetails;

    ReloadAnalyzersResponse(final Shards shards, Map reloadDetails) {
        super(shards);
        this.reloadDetails = reloadDetails;
    }

    @SuppressWarnings({ "unchecked" })
    private static final ConstructingObjectParser PARSER = new ConstructingObjectParser<>(
        "reload_analyzer",
        true,
        arg -> {
            Shards shards = (Shards) arg[0];
            List> results = (List>) arg[1];
            Map reloadDetails = new HashMap<>();
            for (Tuple result : results) {
                reloadDetails.put(result.v1(), result.v2());
            }
            return new ReloadAnalyzersResponse(shards, reloadDetails);
        }
    );

    @SuppressWarnings({ "unchecked" })
    private static final ConstructingObjectParser, Void> ENTRY_PARSER = new ConstructingObjectParser<>(
        "reload_analyzer.entry",
        true,
        arg -> {
            String index = (String) arg[0];
            Set nodeIds = new HashSet<>((List) arg[1]);
            Set analyzers = new HashSet<>((List) arg[2]);
            return new Tuple<>(index, new ReloadDetails(index, nodeIds, analyzers));
        }
    );

    static {
        declareShardsField(PARSER);
        PARSER.declareObjectArray(constructorArg(), ENTRY_PARSER, new ParseField("reload_details"));
        ENTRY_PARSER.declareString(constructorArg(), new ParseField("index"));
        ENTRY_PARSER.declareStringArray(constructorArg(), new ParseField("reloaded_node_ids"));
        ENTRY_PARSER.declareStringArray(constructorArg(), new ParseField("reloaded_analyzers"));
    }

    public static ReloadAnalyzersResponse fromXContent(XContentParser parser) {
        return PARSER.apply(parser, null);
    }

    public Map getReloadedDetails() {
        return reloadDetails;
    }

    public static class ReloadDetails {

        private final String indexName;
        private final Set reloadedIndicesNodes;
        private final Set reloadedAnalyzers;

        public ReloadDetails(String name, Set reloadedIndicesNodes, Set reloadedAnalyzers) {
            this.indexName = name;
            this.reloadedIndicesNodes = reloadedIndicesNodes;
            this.reloadedAnalyzers = reloadedAnalyzers;
        }

        public String getIndexName() {
            return indexName;
        }

        public Set getReloadedIndicesNodes() {
            return reloadedIndicesNodes;
        }

        public Set getReloadedAnalyzers() {
            return reloadedAnalyzers;
        }
    }
}