[Contract-wrappers] Exchange execute transaction encoder

1 files changed, 124 insertions, 0 deletions

diff --git a/packages/contract-wrappers/src/utils/execute_transaction_encoder.ts b/packages/contract-wrappers/src/utils/execute_transaction_encoder.ts
new file mode 100644
index 000000000..9c941c550
--- /dev/null
+++ b/packages/contract-wrappers/src/utils/execute_transaction_encoder.ts
@@ -0,0 +1,124 @@
+import { schemas } from '@0xproject/json-schemas';
+import { EIP712Schema, EIP712Types, EIP712Utils } from '@0xproject/order-utils';
+import { Order, SignedOrder } from '@0xproject/types';
+import { BigNumber } from '@0xproject/utils';
+import _ = require('lodash');
+
+import { ExchangeContract } from '../contract_wrappers/generated/exchange';
+
+import { assert } from './assert';
+
+const EIP712_ZEROEX_TRANSACTION_SCHEMA: EIP712Schema = {
+    name: 'ZeroExTransaction',
+    parameters: [
+        { name: 'salt', type: EIP712Types.Uint256 },
+        { name: 'signerAddress', type: EIP712Types.Address },
+        { name: 'data', type: EIP712Types.Bytes },
+    ],
+};
+
+export class ExecuteTransactionEncoder {
+    private _exchangeInstance: ExchangeContract;
+    constructor(exchangeInstance: ExchangeContract) {
+        this._exchangeInstance = exchangeInstance;
+    }
+    public getExecuteTransactionHex(data: string, salt: BigNumber, signerAddress: string): string {
+        const exchangeAddress = this._exchangeInstance.address;
+        const executeTransactionData = {
+            salt,
+            signerAddress,
+            data,
+        };
+        const executeTransactionHashBuff = EIP712Utils.structHash(
+            EIP712_ZEROEX_TRANSACTION_SCHEMA,
+            executeTransactionData,
+        );
+        const eip721MessageBuffer = EIP712Utils.createEIP712Message(executeTransactionHashBuff, exchangeAddress);
+        const messageHex = `0x${eip721MessageBuffer.toString('hex')}`;
+        return messageHex;
+    }
+    public fillOrder(signedOrder: SignedOrder, takerAssetFillAmount: BigNumber): string {
+        assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+        assert.isValidBaseUnitAmount('takerAssetFillAmount', takerAssetFillAmount);
+        const abiEncodedData = this._exchangeInstance.fillOrder.getABIEncodedTransactionData(
+            signedOrder,
+            takerAssetFillAmount,
+            signedOrder.signature,
+        );
+        return abiEncodedData;
+    }
+    public fillOrderNoThrow(signedOrder: SignedOrder, takerAssetFillAmount: BigNumber): string {
+        assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+        assert.isValidBaseUnitAmount('takerAssetFillAmount', takerAssetFillAmount);
+        const abiEncodedData = this._exchangeInstance.fillOrderNoThrow.getABIEncodedTransactionData(
+            signedOrder,
+            takerAssetFillAmount,
+            signedOrder.signature,
+        );
+        return abiEncodedData;
+    }
+    public fillOrKillOrder(signedOrder: SignedOrder, takerAssetFillAmount: BigNumber): string {
+        assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+        assert.isValidBaseUnitAmount('takerAssetFillAmount', takerAssetFillAmount);
+        const abiEncodedData = this._exchangeInstance.fillOrKillOrder.getABIEncodedTransactionData(
+            signedOrder,
+            takerAssetFillAmount,
+            signedOrder.signature,
+        );
+        return abiEncodedData;
+    }
+    public cancelOrdersUpTo(targetOrderEpoch: BigNumber): string {
+        assert.isBigNumber('targetOrderEpoch', targetOrderEpoch);
+        const abiEncodedData = this._exchangeInstance.cancelOrdersUpTo.getABIEncodedTransactionData(targetOrderEpoch);
+        return abiEncodedData;
+    }
+    public cancelOrder(order: Order | SignedOrder): string {
+        assert.doesConformToSchema('order', order, schemas.orderSchema);
+        const abiEncodedData = this._exchangeInstance.cancelOrder.getABIEncodedTransactionData(order);
+        return abiEncodedData;
+    }
+    public marketSellOrders(signedOrders: SignedOrder[], takerAssetFillAmount: BigNumber): string {
+        assert.doesConformToSchema('signedOrders', signedOrders, schemas.signedOrdersSchema);
+        assert.isBigNumber('takerAssetFillAmount', takerAssetFillAmount);
+        const signatures = _.map(signedOrders, signedOrder => signedOrder.signature);
+        const abiEncodedData = this._exchangeInstance.marketSellOrders.getABIEncodedTransactionData(
+            signedOrders,
+            takerAssetFillAmount,
+            signatures,
+        );
+        return abiEncodedData;
+    }
+    public marketSellOrdersNoThrow(signedOrders: SignedOrder[], takerAssetFillAmount: BigNumber): string {
+        assert.doesConformToSchema('signedOrders', signedOrders, schemas.signedOrdersSchema);
+        assert.isBigNumber('takerAssetFillAmount', takerAssetFillAmount);
+        const signatures = _.map(signedOrders, signedOrder => signedOrder.signature);
+        const abiEncodedData = this._exchangeInstance.marketSellOrdersNoThrow.getABIEncodedTransactionData(
+            signedOrders,
+            takerAssetFillAmount,
+            signatures,
+        );
+        return abiEncodedData;
+    }
+    public marketBuyOrders(signedOrders: SignedOrder[], makerAssetFillAmount: BigNumber): string {
+        assert.doesConformToSchema('signedOrders', signedOrders, schemas.signedOrdersSchema);
+        assert.isBigNumber('makerAssetFillAmount', makerAssetFillAmount);
+        const signatures = _.map(signedOrders, signedOrder => signedOrder.signature);
+        const abiEncodedData = this._exchangeInstance.marketBuyOrders.getABIEncodedTransactionData(
+            signedOrders,
+            makerAssetFillAmount,
+            signatures,
+        );
+        return abiEncodedData;
+    }
+    public marketBuyOrdersNoThrow(signedOrders: SignedOrder[], makerAssetFillAmount: BigNumber): string {
+        assert.doesConformToSchema('signedOrders', signedOrders, schemas.signedOrdersSchema);
+        assert.isBigNumber('makerAssetFillAmount', makerAssetFillAmount);
+        const signatures = _.map(signedOrders, signedOrder => signedOrder.signature);
+        const abiEncodedData = this._exchangeInstance.marketBuyOrdersNoThrow.getABIEncodedTransactionData(
+            signedOrders,
+            makerAssetFillAmount,
+            signatures,
+        );
+        return abiEncodedData;
+    }
+}