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requiredSigners.ts
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requiredSigners.ts
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import * as Crypto from '@cardano-sdk/crypto';
import * as Ledger from '@cardano-foundation/ledgerjs-hw-app-cardano';
import { Cardano } from '@cardano-sdk/core';
import { LedgerTxTransformerContext } from '../types';
import { Transform, areStringsEqual } from '@cardano-sdk/util';
import { util } from '@cardano-sdk/key-management';
export const toRequiredSigner: Transform<
Crypto.Ed25519KeyHashHex,
Ledger.RequiredSigner,
LedgerTxTransformerContext
> = (keyHash, context) => {
const paymentCredKnownAddress = context?.knownAddresses.find((address) => {
const paymentCredential = Cardano.Address.fromBech32(address.address)?.asBase()?.getPaymentCredential().hash;
return !!paymentCredential && areStringsEqual(paymentCredential.toString(), keyHash);
});
const stakeCredKnownAddress = context?.knownAddresses.find((address) => {
const stakeCredential = Cardano.RewardAccount.toHash(address.rewardAccount);
return !!stakeCredential && areStringsEqual(stakeCredential.toString(), keyHash);
});
const paymentKeyPath = paymentCredKnownAddress
? util.paymentKeyPathFromGroupedAddress(paymentCredKnownAddress)
: null;
const stakeKeyPath = stakeCredKnownAddress ? util.stakeKeyPathFromGroupedAddress(stakeCredKnownAddress) : null;
if (paymentKeyPath) {
return {
path: paymentKeyPath,
type: Ledger.TxRequiredSignerType.PATH
};
}
if (stakeKeyPath) {
return {
path: stakeKeyPath,
type: Ledger.TxRequiredSignerType.PATH
};
}
return {
hashHex: keyHash,
type: Ledger.TxRequiredSignerType.HASH
};
};
export const mapRequiredSigners = (
signers: Crypto.Ed25519KeyHashHex[] | undefined,
context: LedgerTxTransformerContext
): Ledger.RequiredSigner[] | null => (signers ? signers.map((signer) => toRequiredSigner(signer, context)) : null);