import { UTXO, ExtUtxo } from '../globalTypes.js';
import { Transaction } from '@opcat-labs/opcat';
import { ExtPsbt } from '../psbt/extPsbt.js';
/**
 * The optional conditions for querying UTXO.
 * @category Provider
 */
export interface UtxoQueryOptions {
    unspentValue: number;
}
/**
 * a Provider used to query UTXO related to the address
 * @category Provider
 */
export interface UtxoProvider {
    /**
     * Get a list of the UTXOs.
     * @param address The address of the returned UTXOs belongs to.
     * @param options The optional query conditions, see details in `UtxoQueryOptions`.
     * @returns  A promise which resolves to a list of UTXO for the query options.
     */
    getUtxos(address: string, options?: UtxoQueryOptions): Promise<ExtUtxo[]>;
    /**
     * Mark an outpoint as spent
     * @param txId
     * @param vout
     */
    markSpent(txId: string, vout: number): void;
    /**
     * Add a UTXO to the provider
     * @param txId
     * @param vout
     */
    addNewUTXO(utxo: UTXO): void;
}
/**
 * Marks all inputs of a transaction as spent in the UTXO provider.
 * @param utxoProvider - The UTXO provider to update.
 * @param tx - The transaction whose inputs should be marked as spent.
 */
export declare function markSpent(utxoProvider: UtxoProvider, tx: Transaction): void;
/** @ignore */
export declare function addChangeUtxoToProvider(utxoProvider: UtxoProvider, psbt: ExtPsbt): void;
/** @ignore */
export declare function getUtxoKey(utxo: UTXO): string;
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