feat: 🎸 Added more hashing utils

Author: kostysh

src/utils/hash.ts

@@ -1,12 +1,78 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
 import { solidityPackedKeccak256 } from 'ethers';
+import { PaymentOption, CancelOption, UnsignedOfferPayload } from '../shared/types.js';
+import {
+  PAYMENT_OPTION_TYPE_HASH,
+  CANCEL_OPTION_TYPE_HASH,
+  OFFER_TYPE_HASH,
+} from '@windingtree/contracts';
 
-/**
- * Hashes object using given serializer
- *
- * @template Obj
- * @param {(Obj | Obj[])} obj
- * @param {*} [serialize=JSON.stringify]
- * @returns {string}
- */
-export const hashObject = <Obj>(obj: Obj | Obj[], serialize = JSON.stringify): string =>
-  solidityPackedKeccak256(['string'], [serialize(obj)]);
+export const stringify = (data: unknown): string =>
+  JSON.stringify(data, (_, v) => (typeof v === 'bigint' ? v.toString() : v));
+
+export const hashObject = (data: unknown): string =>
+  solidityPackedKeccak256(['string'], [stringify(data)]);
+
+export const hashPaymentOption = (option: PaymentOption): string =>
+  solidityPackedKeccak256(
+    ['bytes32', 'bytes32', 'uint256', 'address'],
+    [PAYMENT_OPTION_TYPE_HASH, option.id, option.price, option.asset],
+  );
+
+export const hashCancelOption = (option: CancelOption): string =>
+  solidityPackedKeccak256(
+    ['bytes32', 'uint256', 'uint256'],
+    [CANCEL_OPTION_TYPE_HASH, option.time, option.penalty],
+  );
+
+export const hashPaymentOptionArray = (options: PaymentOption[]): string => {
+  const hashes = [];
+
+  for (let i = 0; i < options.length; i++) {
+    hashes[i] = hashPaymentOption(options[i]);
+  }
+  return solidityPackedKeccak256(['bytes32[]'], [hashes]);
+};
+
+export const hashCancelOptionArray = (options: CancelOption[]): string => {
+  const hashes = [];
+
+  for (let i = 0; i < options.length; i++) {
+    hashes[i] = hashCancelOption(options[i]);
+  }
+
+  return solidityPackedKeccak256(['bytes32[]'], [hashes]);
+};
+
+export const hashOfferPayload = (payload: UnsignedOfferPayload): string =>
+  solidityPackedKeccak256(
+    [
+      'bytes32',
+      'bytes32',
+      'uint256',
+      'bytes32',
+      'uint256',
+      'bytes32',
+      'bytes32',
+      'bytes32',
+      'bytes32',
+      'bool',
+      'uint256',
+    ],
+    [
+      OFFER_TYPE_HASH,
+      payload.id,
+      payload.expire,
+      payload.supplierId,
+      payload.chainId,
+      payload.requestHash,
+      payload.optionsHash,
+      payload.paymentHash,
+      payload.cancelHash,
+      payload.transferable,
+      payload.checkIn,
+    ],
+  );
+
+export const hashCheckInOut = (offerId: string, signer: string): string =>
+  solidityPackedKeccak256(['bytes32', 'bytes32', 'address'], [OFFER_TYPE_HASH, offerId, signer]);