import { JWK } from './JWK.cjs';
import { Transaction } from './Transaction.cjs';

type Options = {
    key?: JWK;
};
/**
 * The `TransactionSigner` is responsible for providing the method used to sign
 * a transaction and verify a transaction's signature.
 * @template TxToSign The type of transaction this signer signs.
 */
interface TransactionSigner<TxToSign extends Transaction = any> {
    /**
     * Sign the given transaction.
     * @param transaction The transaction in question.
     * @param options (Optional) Options to consider when signing the transaction.
     * @returns The signed transaction.
     */
    sign(transaction: Partial<TxToSign>, options?: Options): Promise<TxToSign> | TxToSign;
    /**
     * Validate the given signing key.
     * @param key The signing key in question.
     * @returns `true` if valid, `false` if not.
     */
    validateSigningKey<K>(key: K): Promise<boolean> | boolean;
    /**
     * Verify a ___signed___ transaction's fields.
     * @param transaction The transaction in question.
     * @returns `true` if the transaction is valid, `false` if not.
     */
    verify(signedTransaction: unknown): Promise<boolean> | boolean;
}

export { TransactionSigner };