import { OnApplicationBootstrap } from '@nestjs/common';
import { EventBus, HealthCheckRegistryService, Type } from '@vendure/core';
import { ElasticsearchHealthIndicator } from './elasticsearch.health';
import { ElasticsearchService } from './elasticsearch.service';
import { ElasticsearchIndexService } from './indexing/elasticsearch-index.service';
import { ElasticsearchOptions } from './options';
/**
 * @description
 * This plugin allows your product search to be powered by [Elasticsearch](https://github.com/elastic/elasticsearch) - a powerful Open Source search
 * engine. This is a drop-in replacement for the DefaultSearchPlugin which exposes many powerful configuration options enabling your storefront
 * to support a wide range of use-cases such as indexing of custom properties, fine control over search index configuration, and to leverage
 * advanced Elasticsearch features like spacial search.
 *
 * ## Installation
 *
 * **Requires Elasticsearch v7.0 < required Elasticsearch version < 7.10 **
 * Elasticsearch version 7.10.2 will throw error due to incompatibility with elasticsearch-js client.
 * [Check here for more info](https://github.com/elastic/elasticsearch-js/issues/1519).
 *
 * `yarn add \@elastic/elasticsearch \@vendure/elasticsearch-plugin`
 *
 * or
 *
 * `npm install \@elastic/elasticsearch \@vendure/elasticsearch-plugin`
 *
 * Make sure to remove the `DefaultSearchPlugin` if it is still in the VendureConfig plugins array.
 *
 * Then add the `ElasticsearchPlugin`, calling the `.init()` method with {@link ElasticsearchOptions}:
 *
 * @example
 * ```ts
 * import { ElasticsearchPlugin } from '\@vendure/elasticsearch-plugin';
 *
 * const config: VendureConfig = {
 *   // Add an instance of the plugin to the plugins array
 *   plugins: [
 *     ElasticsearchPlugin.init({
 *       host: 'http://localhost',
 *       port: 9200,
 *     }),
 *   ],
 * };
 * ```
 *
 * ## Search API Extensions
 * This plugin extends the default search query of the Shop API, allowing richer querying of your product data.
 *
 * The [SearchResponse](/reference/graphql-api/shop/object-types/#searchresponse) type is extended with information
 * about price ranges in the result set:
 * ```graphql
 * extend type SearchResponse {
 *     prices: SearchResponsePriceData!
 * }
 *
 * type SearchResponsePriceData {
 *     range: PriceRange!
 *     rangeWithTax: PriceRange!
 *     buckets: [PriceRangeBucket!]!
 *     bucketsWithTax: [PriceRangeBucket!]!
 * }
 *
 * type PriceRangeBucket {
 *     to: Int!
 *     count: Int!
 * }
 *
 * extend input SearchInput {
 *     priceRange: PriceRangeInput
 *     priceRangeWithTax: PriceRangeInput
 *     inStock: Boolean
 * }
 *
 * input PriceRangeInput {
 *     min: Int!
 *     max: Int!
 * }
 * ```
 *
 * This `SearchResponsePriceData` type allows you to query data about the range of prices in the result set.
 *
 * ## Example Request & Response
 *
 * ```graphql
 * {
 *   search (input: {
 *     term: "table easel"
 *     groupByProduct: true
 *     priceRange: {
         min: 500
         max: 7000
       }
 *   }) {
 *     totalItems
 *     prices {
 *       range {
 *         min
 *         max
 *       }
 *       buckets {
 *         to
 *         count
 *       }
 *     }
 *     items {
 *       productName
 *       score
 *       price {
 *         ...on PriceRange {
 *           min
 *           max
 *         }
 *       }
 *     }
 *   }
 * }
 * ```
 *
 * ```json
 *{
 *  "data": {
 *    "search": {
 *      "totalItems": 9,
 *      "prices": {
 *        "range": {
 *          "min": 999,
 *          "max": 6396,
 *        },
 *        "buckets": [
 *          {
 *            "to": 1000,
 *            "count": 1
 *          },
 *          {
 *            "to": 2000,
 *            "count": 2
 *          },
 *          {
 *            "to": 3000,
 *            "count": 3
 *          },
 *          {
 *            "to": 4000,
 *            "count": 1
 *          },
 *          {
 *            "to": 5000,
 *            "count": 1
 *          },
 *          {
 *            "to": 7000,
 *            "count": 1
 *          }
 *        ]
 *      },
 *      "items": [
 *        {
 *          "productName": "Loxley Yorkshire Table Easel",
 *          "score": 30.58831,
 *          "price": {
 *            "min": 4984,
 *            "max": 4984
 *          }
 *        },
 *        // ... truncated
 *      ]
 *    }
 *  }
 *}
 * ```
 *
 * @deprecated This plugin is moving to `@vendure-community/elasticsearch-plugin`.
 * The `@vendure/elasticsearch-plugin` package will be removed in Vendure v3.6.0.
 *
 * @docsCategory core plugins/ElasticsearchPlugin
 */
export declare class ElasticsearchPlugin implements OnApplicationBootstrap {
    private eventBus;
    private elasticsearchService;
    private elasticsearchIndexService;
    private elasticsearchHealthIndicator;
    private healthCheckRegistryService;
    private static options;
    /** @internal */
    constructor(eventBus: EventBus, elasticsearchService: ElasticsearchService, elasticsearchIndexService: ElasticsearchIndexService, elasticsearchHealthIndicator: ElasticsearchHealthIndicator, healthCheckRegistryService: HealthCheckRegistryService);
    /**
     * Set the plugin options.
     */
    static init(options: ElasticsearchOptions): Type<ElasticsearchPlugin>;
    /** @internal */
    onApplicationBootstrap(): Promise<void>;
    /**
     * Returns a string representation of the target node(s) that the Elasticsearch
     * client is configured to connect to.
     */
    private nodeName;
}