import { SearchMessagesFilterInputUnion } from '../inputs';
import { ErrorUnion, FoundMessagesUnion } from '../outputs';
/**
 * Searches for messages in secret chats. Returns the results in reverse chronological
 * order. For optimal performance the number of returned messages is chosen by the library
 * @param {Object} params
 * @param {number} [params.chatId] - Identifier of the chat in which to search. Specify
 * 0 to search in all secret chats
 * @param {string} [params.query] - Query to search for. If empty, searchChatMessages
 * should be used instead
 * @param {string} [params.fromSearchId] - The identifier from the result of a previous
 * request, use 0 to get results from the last message
 * @param {number} [params.limit] - Maximum number of messages to be returned; up
 * to 100. Fewer messages may be returned than specified by the limit, even if the end
 * of the message history has not been reached
 * @param {SearchMessagesFilterInputUnion} [params.filter] - A filter for the content
 * of messages in the search results
 * @param {Object} state
 * @returns {FoundMessagesUnion | ErrorUnion}
 */
export declare type SearchSecretMessagesMethod = <ResponseT = FoundMessagesUnion>(params: SearchSecretMessagesParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface SearchSecretMessagesParams {
    /** Identifier of the chat in which to search. Specify 0 to search in all secret chats */
    chatId?: number;
    /** Query to search for. If empty, searchChatMessages should be used instead */
    query?: string;
    /**
     * The identifier from the result of a previous request, use 0 to get results from the
     * last message
     */
    fromSearchId?: string;
    /**
     * Maximum number of messages to be returned; up to 100. Fewer messages may be returned
     * than specified by the limit, even if the end of the message history has not been
     * reached
     */
    limit?: number;
    /** A filter for the content of messages in the search results */
    filter?: SearchMessagesFilterInputUnion;
}