/*
 * 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.deletebyquery;

import org.elasticsearch.action.deletebyquery.DeleteByQueryRequest;
import org.elasticsearch.action.deletebyquery.DeleteByQueryResponse;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.action.support.QuerySourceBuilder;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.action.support.RestActions;
import org.elasticsearch.rest.action.support.RestToXContentListener;

import static org.elasticsearch.action.deletebyquery.DeleteByQueryAction.INSTANCE;
import static org.elasticsearch.rest.RestRequest.Method.DELETE;

/**
 * @see DeleteByQueryRequest
 */
public class RestDeleteByQueryAction extends BaseRestHandler {

    @Inject
    public RestDeleteByQueryAction(Settings settings, RestController controller, Client client) {
        super(settings, controller, client);
        controller.registerHandler(DELETE, "/{index}/_query", this);
        controller.registerHandler(DELETE, "/{index}/{type}/_query", this);
    }

    @Override
    public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) {
        DeleteByQueryRequest delete = new DeleteByQueryRequest(Strings.splitStringByCommaToArray(request.param("index")));
        delete.indicesOptions(IndicesOptions.fromRequest(request, delete.indicesOptions()));
        delete.routing(request.param("routing"));
        if (request.hasParam("timeout")) {
            delete.timeout(request.paramAsTime("timeout", null));
        }
        if (request.hasContent()) {
            delete.source(request.content());
        } else {
            String source = request.param("source");
            if (source != null) {
                delete.source(source);
            } else {
                QuerySourceBuilder querySourceBuilder = RestActions.parseQuerySource(request);
                if (querySourceBuilder != null) {
                    delete.source(querySourceBuilder);
                }
            }
        }
        delete.types(Strings.splitStringByCommaToArray(request.param("type")));
        client.execute(INSTANCE, delete, new RestToXContentListener<DeleteByQueryResponse>(channel));
    }
}