/*
 * 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.index.reindex;

import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.HandledTransportAction;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.ParentTaskAssigningClient;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;


public class TransportDeleteByQueryAction extends HandledTransportAction<DeleteByQueryRequest, BulkByScrollResponse> {

    private final ThreadPool threadPool;
    private final Client client;
    private final ScriptService scriptService;
    private final ClusterService clusterService;

    @Inject
    public TransportDeleteByQueryAction(ThreadPool threadPool, ActionFilters actionFilters, Client client,
                                        TransportService transportService, ScriptService scriptService, ClusterService clusterService) {
        super(DeleteByQueryAction.NAME, transportService, actionFilters,
            (Writeable.Reader<DeleteByQueryRequest>) DeleteByQueryRequest::new);
        this.threadPool = threadPool;
        this.client = client;
        this.scriptService = scriptService;
        this.clusterService = clusterService;
    }

    @Override
    public void doExecute(Task task, DeleteByQueryRequest request, ActionListener<BulkByScrollResponse> listener) {
        BulkByScrollTask bulkByScrollTask = (BulkByScrollTask) task;
        BulkByScrollParallelizationHelper.startSlicedAction(request, bulkByScrollTask, DeleteByQueryAction.INSTANCE, listener, client,
            clusterService.localNode(),
            () -> {
                ParentTaskAssigningClient assigningClient = new ParentTaskAssigningClient(client, clusterService.localNode(),
                    bulkByScrollTask);
                new AsyncDeleteByQueryAction(bulkByScrollTask, logger, assigningClient, threadPool, request, scriptService,
                    listener).start();
            }
        );
    }
}
