/**
 * @module botbuilder-azure
 */
/**
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */
/// <reference types="node" />
import type { Agent } from 'http';
import { ConnectionPolicy, RequestOptions } from 'documentdb';
import { Storage, StoreItems } from 'botbuilder';
/**
 * Additional settings for configuring an instance of `CosmosDbStorage`.
 *
 * @deprecated Please use CosmosDbPartitionedStorageOptions with CosmosDbPartitionedStorage instead.
 */
export interface CosmosDbStorageSettings {
    /**
     * The endpoint Uri for the service endpoint from the Azure Cosmos DB service.
     */
    serviceEndpoint: string;
    /**
     * The AuthKey used by the client from the Azure Cosmos DB service.
     */
    authKey: string;
    /**
     * The Database ID.
     */
    databaseId: string;
    /**
     * The Collection ID.
     */
    collectionId: string;
    /**
     * (Optional) Cosmos DB RequestOptions that are passed when the database is created.
     */
    databaseCreationRequestOptions?: RequestOptions;
    /**
     * (Optional) Cosmos DB RequestOptiones that are passed when the document collection is created.
     */
    documentCollectionRequestOptions?: RequestOptions;
    /**
     * (Optional) partitionKey that are passed when the document CosmosDbStorage is created.
     *
     * @deprecated Please use [[CosmosDbPartitionedStorage]]. See https://github.com/microsoft/botframework-sdk/issues/5467
     */
    partitionKey?: string;
    /**
     * (Optional) http agent to use for outbound requests
     */
    agent?: Agent;
}
/**
 * Middleware that implements a CosmosDB based storage provider for a bot.
 *
 * @deprecated Please use CosmosDbPartitionedStorage instead.
 *
 * @remarks
 * The `connectionPolicyConfigurator` handler can be used to further customize the connection to
 * CosmosDB (Connection mode, retry options, timeouts). More information at
 * http://azure.github.io/azure-documentdb-node/global.html#ConnectionPolicy
 */
export declare class CosmosDbStorage implements Storage {
    private settings;
    private client;
    private collectionExists;
    private documentCollectionCreationRequestOption;
    private databaseCreationRequestOption;
    /**
     * Creates a new CosmosDbStorage instance.
     *
     * @param settings Setting to configure the provider.
     * @param connectionPolicyConfigurator (Optional) An optional delegate that accepts a ConnectionPolicy for customizing policies. More information at http://azure.github.io/azure-documentdb-node/global.html#ConnectionPolicy
     */
    constructor(settings: CosmosDbStorageSettings, connectionPolicyConfigurator?: (policy: ConnectionPolicy) => void);
    /**
     * Read storage items from storage.
     *
     * @param keys Keys of the items to read from the store.
     * @returns The read items.
     */
    read(keys: string[]): Promise<StoreItems>;
    /**
     * Write storage items to storage.
     *
     * @param changes Items to write to storage, indexed by key.
     */
    write(changes: StoreItems): Promise<void>;
    /**
     * Delete storage items from storage.
     *
     * @param keys Keys of the items to remove from the store.
     */
    delete(keys: string[]): Promise<void>;
    /**
     * Delayed Database and Collection creation if they do not exist.
     */
    private ensureCollectionExists;
}
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