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feat(blockchain-link): change stake type

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This commit is contained in:
Pavlo Syrotyna
2026-02-03 11:18:46 +02:00
committed by Tomas Klima
parent 206ecc24b9
commit 7eede71ad0
2 changed files with 50 additions and 11 deletions
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9
packages/blockchain-link-types/src/common.ts
View File

@@ -153,7 +153,12 @@ export interface Transaction {
ethereumSpecific?: BlockbookTransaction['ethereumSpecific'];
internalTransfers: InternalTransfer[];
cardanoSpecific?: {
subtype?: 'withdrawal' | 'stake_delegation' | 'stake_registration' | 'stake_deregistration';
subtype?:
| 'withdrawal'
| 'stake_delegation'
| 'stake_registration'
| 'stake_deregistration'
| 'governance_delegation';
withdrawal?: string;
deposit?: string;
};
@@ -314,7 +319,7 @@ export interface SubscriptionAccountInfo {
export type ChannelMessage<T> = T & { id: number };
export type StakeType = 'stake' | 'unstake' | 'claim';
export type StakeType = 'stake' | 'unstake' | 'claim' | 'change-delegate';
export type TokenDetailByMint = {
[mint: string]: {

52
packages/blockchain-link-utils/src/blockfrost.ts
View File

@@ -50,18 +50,47 @@ const hexToString = (input: string): string => {
return str;
};
const getSubtype = (tx: Pick<BlockfrostTransaction, 'txData'>) => {
const withdrawal = tx.txData.withdrawal_count > 0;
const getSubtype = (
tx: Pick<BlockfrostTransaction, 'txData'>,
totalInput: BigNumberValue,
totalOutput: BigNumberValue,
allOutputsAreChange: boolean,
) => {
const { withdrawal_count, stake_cert_count, delegation_count, deposit, fees } = tx.txData;
const withdrawal = withdrawal_count > 0;
if (withdrawal) {
return 'withdrawal';
}
const registrations = tx.txData.stake_cert_count;
const delegations = tx.txData.delegation_count;
if (registrations === 0 && delegations === 0) return;
// governance_delegation is detected heuristically.
// Blockfrost txData does not expose governance (DRep) certificates, so we infer it as:
// - no withdrawals
// - no stake or pool delegation certificates
// - zero deposit
// - self transaction where totalInput === totalOutput + fee
// - all outputs go to change addresses (no value transfer)
// - non-zero fee
// This may still misclassify rare fee-only self transactions.
if (
withdrawal_count === 0 &&
stake_cert_count === 0 &&
delegation_count === 0 &&
new BigNumber(deposit || 0).isZero()
) {
const fee = new BigNumber(fees || 0);
const isFeeOnly =
fee.gt(0) && new BigNumber(totalInput).eq(new BigNumber(totalOutput).plus(fee));
if (registrations > 0) {
if (new BigNumber(tx.txData.deposit).gt(0)) {
if (isFeeOnly && allOutputsAreChange) {
return 'governance_delegation';
}
}
if (stake_cert_count === 0 && delegation_count === 0) return;
if (stake_cert_count > 0) {
if (new BigNumber(deposit).gt(0)) {
// transaction could both register staking address and delegate stake at the same time. In that case we treat it as "stake registration"
return 'stake_registration';
}
@@ -69,7 +98,7 @@ const getSubtype = (tx: Pick<BlockfrostTransaction, 'txData'>) => {
return 'stake_deregistration';
}
if (delegations > 0) {
if (delegation_count > 0) {
return 'stake_delegation';
}
};
@@ -225,6 +254,11 @@ export const transformTransaction = (
const internal = accountAddress ? filterTargets(accountAddress.change, outputs) : [];
const totalInput = inputs.reduce(sumVinVout, 0);
const totalOutput = outputs.reduce(sumVinVout, 0);
const allOutputsAreChange =
fullData &&
blockfrostTxData.txUtxos.outputs.every(o =>
accountAddress?.change.some(c => c.address === o.address),
);
if (outgoing.length === 0 && incoming.length === 0) {
type = 'unknown';
@@ -295,7 +329,7 @@ export const transformTransaction = (
tokens,
internalTransfers: [],
cardanoSpecific: {
subtype: getSubtype(blockfrostTxData),
subtype: getSubtype(blockfrostTxData, totalInput, totalOutput, allOutputsAreChange),
withdrawal,
deposit,
},