import { NftCollection, NftItem } from '@soul-wallet/extension-base/background/KoniTypes';
import { _EvmApi, _SubstrateApi } from '@soul-wallet/extension-base/services/chain-service/types';
export interface HandleNftParams {
    updateItem: (chain: string, data: NftItem, owner: string) => void;
    updateCollection: (chain: string, data: NftCollection) => void;
}
export declare abstract class BaseNftApi {
    chain: string;
    substrateApi: _SubstrateApi | null;
    evmApi: _EvmApi | null;
    data: NftCollection[];
    total: number;
    addresses: string[];
    isEthereum: boolean;
    protected constructor(chain: string, substrateApi?: _SubstrateApi | null, addresses?: string[], evmApi?: _EvmApi);
    connect(): Promise<void>;
    recoverConnection(): void;
    getSubstrateApi(): _SubstrateApi | null;
    getChain(): string;
    getTotal(): number;
    getData(): NftCollection[];
    setSubstrateApi(api: _SubstrateApi): void;
    setChain(chain: string): void;
    setAddresses(addresses: string[]): void;
    protected parseTokenId(tokenId: string): string;
    parseUrl(input: string): string | undefined;
    abstract handleNfts(params: HandleNftParams): void;
    abstract fetchNfts(params: HandleNftParams): Promise<number>;
}