/*
 * Licensed to ElasticSearch and Shay Banon 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.action.admin.indices.delete;

import org.elasticsearch.action.ActionRequestValidationException;
import org.elasticsearch.action.support.master.MasterNodeOperationRequest;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.unit.TimeValue;

import java.io.IOException;

import static org.elasticsearch.action.ValidateActions.addValidationError;
import static org.elasticsearch.common.unit.TimeValue.readTimeValue;
import static org.elasticsearch.common.unit.TimeValue.timeValueSeconds;

/**
 * A request to delete an index. Best created with {@link org.elasticsearch.client.Requests#deleteIndexRequest(String)}.
 */
public class DeleteIndexRequest extends MasterNodeOperationRequest<DeleteIndexRequest> {

    private String[] indices;

    private TimeValue timeout = timeValueSeconds(10);

    DeleteIndexRequest() {
    }

    /**
     * Constructs a new delete index request for the specified index.
     */
    public DeleteIndexRequest(String index) {
        this.indices = new String[]{index};
    }

    public DeleteIndexRequest(String... indices) {
        this.indices = indices;
    }

    @Override
    public ActionRequestValidationException validate() {
        ActionRequestValidationException validationException = null;
        if (indices == null) {
            validationException = addValidationError("index / indices is missing", validationException);
        }
        return validationException;
    }

    public DeleteIndexRequest indices(String... indices) {
        this.indices = indices;
        return this;
    }

    /**
     * The index to delete.
     */
    public String[] indices() {
        return indices;
    }

    /**
     * Timeout to wait for the index deletion to be acknowledged by current cluster nodes. Defaults
     * to <tt>10s</tt>.
     */
    public TimeValue timeout() {
        return timeout;
    }

    /**
     * Timeout to wait for the index deletion to be acknowledged by current cluster nodes. Defaults
     * to <tt>10s</tt>.
     */
    public DeleteIndexRequest timeout(TimeValue timeout) {
        this.timeout = timeout;
        return this;
    }

    /**
     * Timeout to wait for the index deletion to be acknowledged by current cluster nodes. Defaults
     * to <tt>10s</tt>.
     */
    public DeleteIndexRequest timeout(String timeout) {
        return timeout(TimeValue.parseTimeValue(timeout, null));
    }

    @Override
    public void readFrom(StreamInput in) throws IOException {
        super.readFrom(in);
        indices = new String[in.readVInt()];
        for (int i = 0; i < indices.length; i++) {
            indices[i] = in.readString();
        }
        timeout = readTimeValue(in);
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        super.writeTo(out);
        if (indices == null) {
            out.writeVInt(0);
        } else {
            out.writeVInt(indices.length);
            for (String index : indices) {
                out.writeString(index);
            }
        }
        timeout.writeTo(out);
    }
}