import { Cardano } from '@cardano-sdk/core';
import { CustomError } from 'ts-custom-error';
import { DataSource } from 'typeorm';
import { Hash32ByteBase16 } from '@cardano-sdk/crypto';
import { StakePoolMetadataFetchMode } from '../Program/options';
import { WorkerHandlerFactory } from './types';
export declare const isUpdateOutdated: (dataSource: DataSource, poolId: Cardano.PoolId, poolRegistrationId: string) => Promise<boolean>;
interface SavePoolMetadataArguments {
    dataSource: DataSource;
    hash: Hash32ByteBase16;
    metadata: Cardano.StakePoolMetadata;
    poolId: Cardano.PoolId;
    poolRegistrationId: string;
}
export declare const savePoolMetadata: (args: SavePoolMetadataArguments) => Promise<void>;
export declare const getUrlToFetch: (metadataFetchMode: StakePoolMetadataFetchMode, smashUrl: string | undefined, directUrl: string, poolRegistrationId: string, metadataHash: string) => string;
export declare const attachExtendedMetadata: (metadataWithoutExt: Cardano.StakePoolMetadata, extMetadata: Cardano.ExtendedStakePoolMetadata | CustomError | undefined) => Cardano.StakePoolMetadata;
export declare const stakePoolMetadataHandlerFactory: WorkerHandlerFactory;
export {};
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