massive refactor

src/crypt/signCrossChainOrder.ts

@@ -0,0 +1,111 @@
+import { BigNumber } from 'bignumber.js';
+import { ethers, keccak256 } from 'ethers';
+import { INTERNAL_PROTOCOL_PRECISION } from '../constants';
+import { CROSS_CHAIN_ORDER_TYPES } from '../constants/orderTypes/orderTypes';
+import type { Order, SignedCrossChainOrder, SupportedChainId } from '../types.js';
+import normalizeNumber from '../utils/normalizeNumber.js';
+import getDomainData from './getDomainData.js';
+import generateSecret from '../utils/generateSecret';
+import { getOrderHash } from './hashOrders';
+
+const DAY = 24 * 60 * 60 * 1000;
+const LOCK_ORDER_EXPIRATION = 4 * DAY;
+const DEFAULT_EXPIRATION = 29 * DAY;
+
+export type SignCrossChainOrderProps = {
+  baseAssetAddress: string
+  quoteAssetAddress: string
+  side: 'BUY' | 'SELL'
+  price: BigNumber.Value
+  amount: BigNumber.Value
+  matcherFee: BigNumber.Value
+  senderAddress: string
+  matcherAddress: string
+  serviceFeeAssetAddress: string
+  signer: ethers.Signer
+  chainId: SupportedChainId
+  targetChainId?: SupportedChainId
+}
+
+export const signCrossChainOrder = async ({
+  amount,
+  signer,
+  side,
+  baseAssetAddress,
+  quoteAssetAddress,
+  serviceFeeAssetAddress,
+  matcherFee,
+  matcherAddress,
+  senderAddress,
+  targetChainId,
+  chainId,
+  price
+}: SignCrossChainOrderProps): Promise<SignedCrossChainOrder> => {
+  const nonce = Date.now();
+  const expiration = nonce + DEFAULT_EXPIRATION;
+  const lockOrderExpiration = nonce + LOCK_ORDER_EXPIRATION;
+
+  const order: Order = {
+    senderAddress,
+    matcherAddress,
+    baseAsset: baseAssetAddress,
+    quoteAsset: quoteAssetAddress,
+    matcherFeeAsset: serviceFeeAssetAddress,
+    amount: Number(normalizeNumber(
+      amount,
+      INTERNAL_PROTOCOL_PRECISION,
+      BigNumber.ROUND_FLOOR,
+    )),
+    price: Number(normalizeNumber(
+      price,
+      INTERNAL_PROTOCOL_PRECISION,
+      BigNumber.ROUND_FLOOR,
+    )),
+    matcherFee: Number(normalizeNumber(
+      matcherFee,
+      INTERNAL_PROTOCOL_PRECISION,
+      BigNumber.ROUND_CEIL, // ROUND_CEIL because we don't want get "not enough fee" error
+    )),
+    nonce,
+    expiration,
+    buySide: side === 'BUY' ? 1 : 0
+  };
+
+  const secret = generateSecret();
+  const secretHash = keccak256(secret);
+
+  const crossChainOrder = {
+    limitOrder: order,
+    chainId: Number(chainId),
+    secretHash,
+    lockOrderExpiration
+  }
+
+  const signature = await signer.signTypedData(
+    getDomainData(chainId),
+    CROSS_CHAIN_ORDER_TYPES,
+    crossChainOrder
+  );
+
+  // https://github.com/poap-xyz/poap-fun/pull/62#issue-928290265
+  // "Signature's v was always send as 27 or 28, but from Ledger was 0 or 1"
+  const fixedSignature = ethers.Signature.from(signature).serialized;
+
+  // if (!fixedSignature) throw new Error("Can't sign order");
+  const signedOrderWithoutId: Omit<SignedCrossChainOrder, 'id'> = {
+    ...order,
+    signature: fixedSignature,
+    secret,
+    secretHash,
+    targetChainId: Number(targetChainId),
+    lockOrderExpiration
+  }
+  const orderHash = getOrderHash(signedOrderWithoutId, chainId);
+
+  const signedCrossChainOrder: SignedCrossChainOrder = {
+    ...signedOrderWithoutId,
+    id: orderHash
+  };
+
+  return signedCrossChainOrder;
+};