/*
 * 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.action.admin.indices.close;

import org.elasticsearch.Version;
import org.elasticsearch.action.ActionRequestValidationException;
import org.elasticsearch.action.IndicesRequest;
import org.elasticsearch.action.support.ActiveShardCount;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.action.support.master.AcknowledgedRequest;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.util.CollectionUtils;

import java.io.IOException;

import static org.elasticsearch.action.ValidateActions.addValidationError;

/**
 * A request to close an index.
 */
public class CloseIndexRequest extends AcknowledgedRequest<CloseIndexRequest> implements IndicesRequest.Replaceable {

    private String[] indices;
    private IndicesOptions indicesOptions = IndicesOptions.strictExpandOpen();
    private ActiveShardCount waitForActiveShards = ActiveShardCount.NONE;

    public CloseIndexRequest(StreamInput in) throws IOException {
        super(in);
        indices = in.readStringArray();
        indicesOptions = IndicesOptions.readIndicesOptions(in);
        if (in.getVersion().onOrAfter(Version.V_7_2_0)) {
            waitForActiveShards = ActiveShardCount.readFrom(in);
        } else {
            waitForActiveShards = ActiveShardCount.NONE;
        }
    }

    public CloseIndexRequest() {
    }

    /**
     * Constructs a new close index request for the specified index.
     */
    public CloseIndexRequest(String... indices) {
        this.indices = indices;
    }

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

    /**
     * The indices to be closed
     * @return the indices to be closed
     */
    @Override
    public String[] indices() {
        return indices;
    }

    /**
     * Sets the indices to be closed
     * @param indices the indices to be closed
     * @return the request itself
     */
    @Override
    public CloseIndexRequest indices(String... indices) {
        this.indices = indices;
        return this;
    }

    /**
     * Specifies what type of requested indices to ignore and how to deal with wildcard expressions.
     * For example indices that don't exist.
     *
     * @return the desired behaviour regarding indices to ignore and wildcard indices expressions
     */
    @Override
    public IndicesOptions indicesOptions() {
        return indicesOptions;
    }

    /**
     * Specifies what type of requested indices to ignore and how to deal wild wildcard expressions.
     * For example indices that don't exist.
     *
     * @param indicesOptions the desired behaviour regarding indices to ignore and wildcard indices expressions
     * @return the request itself
     */
    public CloseIndexRequest indicesOptions(IndicesOptions indicesOptions) {
        this.indicesOptions = indicesOptions;
        return this;
    }

    public ActiveShardCount waitForActiveShards() {
        return waitForActiveShards;
    }

    public CloseIndexRequest waitForActiveShards(final ActiveShardCount waitForActiveShards) {
        this.waitForActiveShards = waitForActiveShards;
        return this;
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        super.writeTo(out);
        out.writeStringArray(indices);
        indicesOptions.writeIndicesOptions(out);
        if (out.getVersion().onOrAfter(Version.V_7_2_0)) {
            waitForActiveShards.writeTo(out);
        }
    }
}
