/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership.  Elasticsearch 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.elasticsearch.rest.action.admin.indices;

import org.elasticsearch.action.admin.indices.settings.put. UpdateSettingsRequest;
import org.elasticsearch.action.support. IndicesOptions;
import org.elasticsearch.client.node. NodeClient;
import org.elasticsearch.common. Strings;
import org.elasticsearch.common.settings. Settings;
import org.elasticsearch.rest. BaseRestHandler;
import org.elasticsearch.rest. RestRequest;
import org.elasticsearch.rest.action. RestToXContentListener;

import java.io. IOException;
import java.util. List;
import java.util. Set;

import static org.elasticsearch.client. Requests.updateSettingsRequest;
import static org.elasticsearch.rest. RestRequest. Method. PUT;

public class RestUpdateSettingsAction extends BaseRestHandler {

    @Override
    public List<Route> routes() {
        return List.of(
            new Route(PUT, "/{index}/_settings"),
            new Route(PUT, "/_settings"));
    }

    @Override
    public String getName() {
        return "update_settings_action";
    }

    @Override
    public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
        UpdateSettingsRequest updateSettingsRequest = updateSettingsRequest(Strings.splitStringByCommaToArray(request.param("index")));
        updateSettingsRequest.timeout(request.paramAsTime("timeout", updateSettingsRequest.timeout()));
        updateSettingsRequest.setPreserveExisting(request.paramAsBoolean("preserve_existing", updateSettingsRequest.isPreserveExisting()));
        updateSettingsRequest.masterNodeTimeout(request.paramAsTime("master_timeout", updateSettingsRequest.masterNodeTimeout()));
        updateSettingsRequest.indicesOptions(IndicesOptions.fromRequest(request, updateSettingsRequest.indicesOptions()));
        updateSettingsRequest.fromXContent(request.contentParser());

        return channel -> client.admin().indices().updateSettings(updateSettingsRequest, new RestToXContentListener<>(channel));
    }

    @Override
    protected Set<String> responseParams() {
        return Settings. FORMAT_PARAMS;
    }
}
