From 91702bbae214f56e7ff66156fa799fcfb83f6e42 Mon Sep 17 00:00:00 2001
From: Brandon Millman <brandon.millman@gmail.com>
Date: Fri, 14 Sep 2018 13:45:14 +0200
Subject: Move packages/forwarder-helper into packages/asset-buyer

---
 .../forwarder-helper/src/forwarder_helper_impl.ts  | 64 ----------------------
 1 file changed, 64 deletions(-)
 delete mode 100644 packages/forwarder-helper/src/forwarder_helper_impl.ts

(limited to 'packages/forwarder-helper/src/forwarder_helper_impl.ts')

diff --git a/packages/forwarder-helper/src/forwarder_helper_impl.ts b/packages/forwarder-helper/src/forwarder_helper_impl.ts
deleted file mode 100644
index a90edb0bb..000000000
--- a/packages/forwarder-helper/src/forwarder_helper_impl.ts
+++ /dev/null
@@ -1,64 +0,0 @@
-import { marketUtils } from '@0xproject/order-utils';
-import { SignedOrder } from '@0xproject/types';
-import { BigNumber } from '@0xproject/utils';
-import * as _ from 'lodash';
-
-import { constants } from './constants';
-import { ForwarderHelper, ForwarderHelperError, MarketBuyOrdersInfo, MarketBuyOrdersInfoRequest } from './types';
-import { forwarderHelperImplConfigUtils } from './utils/forwarder_helper_impl_config_utils';
-
-const SLIPPAGE_PERCENTAGE = new BigNumber(0.2); // 20% slippage protection, possibly move this into request interface
-
-export interface ForwarderHelperImplConfig {
-    orders: SignedOrder[];
-    feeOrders: SignedOrder[];
-    remainingFillableMakerAssetAmounts?: BigNumber[];
-    remainingFillableFeeAmounts?: BigNumber[];
-}
-
-export class ForwarderHelperImpl implements ForwarderHelper {
-    public readonly config: ForwarderHelperImplConfig;
-    constructor(config: ForwarderHelperImplConfig) {
-        this.config = forwarderHelperImplConfigUtils.sortedConfig(config);
-    }
-    public getMarketBuyOrdersInfo(request: MarketBuyOrdersInfoRequest): MarketBuyOrdersInfo {
-        const { makerAssetFillAmount, feePercentage } = request;
-        const { orders, feeOrders, remainingFillableMakerAssetAmounts, remainingFillableFeeAmounts } = this.config;
-        // TODO: make the slippage percentage customizable
-        const slippageBufferAmount = makerAssetFillAmount.mul(SLIPPAGE_PERCENTAGE).round();
-        const { resultOrders, remainingFillAmount } = marketUtils.findOrdersThatCoverMakerAssetFillAmount(
-            orders,
-            makerAssetFillAmount,
-            {
-                remainingFillableMakerAssetAmounts,
-                slippageBufferAmount,
-            },
-        );
-        if (remainingFillAmount.gt(constants.ZERO_AMOUNT)) {
-            throw new Error(ForwarderHelperError.InsufficientMakerAssetLiquidity);
-        }
-        // TODO: update this logic to find the minimum amount of feeOrders to cover the worst case as opposed to
-        // finding order that cover all fees, this will help with estimating ETH and minimizing gas usage
-        const { resultFeeOrders, remainingFeeAmount } = marketUtils.findFeeOrdersThatCoverFeesForTargetOrders(
-            resultOrders,
-            feeOrders,
-            {
-                remainingFillableMakerAssetAmounts,
-                remainingFillableFeeAmounts,
-            },
-        );
-        if (remainingFeeAmount.gt(constants.ZERO_AMOUNT)) {
-            throw new Error(ForwarderHelperError.InsufficientZrxLiquidity);
-        }
-        // TODO: calculate min and max eth usage
-        // TODO: optimize orders call data
-        return {
-            makerAssetFillAmount,
-            orders: resultOrders,
-            feeOrders: resultFeeOrders,
-            minEthAmount: constants.ZERO_AMOUNT,
-            maxEthAmount: constants.ZERO_AMOUNT,
-            feePercentage,
-        };
-    }
-}
-- 
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