/**
 * Copyright (c) 2018-2023, BOTLabs GmbH.
 *
 * This source code is licensed under the BSD 4-Clause "Original" license
 * found in the LICENSE file in the root directory of this source tree.
 */
import type { IAttestation, IDelegationNode, KiltAddress } from '@kiltprotocol/types';
import * as Did from '@kiltprotocol/did';
import { DelegationNode } from './DelegationNode.js';
/**
 * Encodes the delegation and the signature for usage as arguments of `api.tx.delegation.addDelegation()`.
 *
 * @param delegation The delegation node to store under the hierarchy specified as part of the node.
 * @param signature The DID signature of the delegate owner of the new delegation node.
 * @returns The array of arguments for `addDelegation`.
 */
export declare function addDelegationToChainArgs(delegation: DelegationNode, signature: Did.EncodedSignature): [
    DelegationNode['id'],
    string,
    KiltAddress,
    Uint8Array,
    Did.EncodedSignature
];
/**
 * Fetch a delegation node from the blockchain given its identifier.
 *
 * @param delegationId The delegation node ID to fetch.
 * @returns The retrieved [[DelegationNode]].
 */
export declare function fetch(delegationId: IDelegationNode['id']): Promise<DelegationNode>;
/**
 * Query the blockchain to retrieve the number of **direct** children of a given delegation node.
 *
 * @param delegationNode The delegation node to perform the lookup for.
 * @returns A list of [[DelegationNode]] containing all the direct children of the provided node.
 */
export declare function getChildren(delegationNode: DelegationNode): Promise<DelegationNode[]>;
/**
 * Query the blockchain to retrieve all the attestations (their claim hashes) created with the provided delegation.
 *
 * @param id The identifier of the delegation node to retrieve delegated attestations for.
 * @returns A list of claim hashes issued using the provided delegation.
 */
export declare function getAttestationHashes(id: IDelegationNode['id']): Promise<Array<IAttestation['claimHash']>>;