Add contracts to packages, fix most linting errors

1 files changed, 168 insertions, 0 deletions

diff --git a/packages/contracts/util/exchange_wrapper.ts b/packages/contracts/util/exchange_wrapper.ts
new file mode 100644
index 000000000..062ea292b
--- /dev/null
+++ b/packages/contracts/util/exchange_wrapper.ts
@@ -0,0 +1,168 @@
+import {BigNumber} from 'bignumber.js';
+import * as _ from 'lodash';
+
+import {formatters} from './formatters';
+import {Order} from './order';
+import {ContractInstance} from './types';
+
+export class ExchangeWrapper {
+  private exchange: ContractInstance;
+  constructor(exchangeContractInstance: ContractInstance) {
+    this.exchange = exchangeContractInstance;
+  }
+  public async fillOrderAsync(order: Order, from: string,
+                              opts: {
+                                  fillTakerTokenAmount?: BigNumber;
+                                  shouldThrowOnInsufficientBalanceOrAllowance?: boolean;
+                              } = {}) {
+    const shouldThrowOnInsufficientBalanceOrAllowance = !!opts.shouldThrowOnInsufficientBalanceOrAllowance;
+    const params = order.createFill(shouldThrowOnInsufficientBalanceOrAllowance, opts.fillTakerTokenAmount);
+    const tx = await this.exchange.fillOrder(
+      params.orderAddresses,
+      params.orderValues,
+      params.fillTakerTokenAmount,
+      params.shouldThrowOnInsufficientBalanceOrAllowance,
+      params.v,
+      params.r,
+      params.s,
+      {from},
+    );
+    _.each(tx.logs, log => wrapLogBigNumbers(log));
+    return tx;
+  }
+  public async cancelOrderAsync(order: Order, from: string,
+                                opts: {cancelTakerTokenAmount?: BigNumber} = {}) {
+    const params = order.createCancel(opts.cancelTakerTokenAmount);
+    const tx = await this.exchange.cancelOrder(
+      params.orderAddresses,
+      params.orderValues,
+      params.cancelTakerTokenAmount,
+      {from},
+    );
+    _.each(tx.logs, log => wrapLogBigNumbers(log));
+    return tx;
+  }
+  public async fillOrKillOrderAsync(order: Order, from: string,
+                                    opts: {fillTakerTokenAmount?: BigNumber} = {}) {
+    const shouldThrowOnInsufficientBalanceOrAllowance = true;
+    const params = order.createFill(shouldThrowOnInsufficientBalanceOrAllowance, opts.fillTakerTokenAmount);
+    const tx = await this.exchange.fillOrKillOrder(
+      params.orderAddresses,
+      params.orderValues,
+      params.fillTakerTokenAmount,
+      params.v,
+      params.r,
+      params.s,
+      {from},
+    );
+    _.each(tx.logs, log => wrapLogBigNumbers(log));
+    return tx;
+  }
+  public async batchFillOrdersAsync(orders: Order[], from: string,
+                                    opts: {
+                                        fillTakerTokenAmounts?: BigNumber[];
+                                        shouldThrowOnInsufficientBalanceOrAllowance?: boolean;
+                                    } = {}) {
+    const shouldThrowOnInsufficientBalanceOrAllowance = !!opts.shouldThrowOnInsufficientBalanceOrAllowance;
+    const params = formatters.createBatchFill(
+        orders, shouldThrowOnInsufficientBalanceOrAllowance, opts.fillTakerTokenAmounts);
+    const tx = await this.exchange.batchFillOrders(
+      params.orderAddresses,
+      params.orderValues,
+      params.fillTakerTokenAmounts,
+      params.shouldThrowOnInsufficientBalanceOrAllowance,
+      params.v,
+      params.r,
+      params.s,
+      {from},
+    );
+    _.each(tx.logs, log => wrapLogBigNumbers(log));
+    return tx;
+  }
+  public async batchFillOrKillOrdersAsync(orders: Order[], from: string,
+                                          opts: {
+                                              fillTakerTokenAmounts?: BigNumber[];
+                                          } = {}) {
+    const params = formatters.createBatchFill(orders, undefined, opts.fillTakerTokenAmounts);
+    const tx = await this.exchange.batchFillOrKillOrders(
+      params.orderAddresses,
+      params.orderValues,
+      params.fillTakerTokenAmounts,
+      params.v,
+      params.r,
+      params.s,
+      {from},
+    );
+    _.each(tx.logs, log => wrapLogBigNumbers(log));
+    return tx;
+  }
+  public async fillOrdersUpToAsync(orders: Order[], from: string,
+                                   opts: {fillTakerTokenAmount?: BigNumber;
+                                          shouldThrowOnInsufficientBalanceOrAllowance?: boolean;
+                                   } = {}) {
+    const shouldThrowOnInsufficientBalanceOrAllowance = !!opts.shouldThrowOnInsufficientBalanceOrAllowance;
+    const params = formatters.createFillUpTo(orders,
+                                             shouldThrowOnInsufficientBalanceOrAllowance,
+                                             opts.fillTakerTokenAmount);
+    const tx = await this.exchange.fillOrdersUpTo(
+      params.orderAddresses,
+      params.orderValues,
+      params.fillTakerTokenAmount,
+      params.shouldThrowOnInsufficientBalanceOrAllowance,
+      params.v,
+      params.r,
+      params.s,
+      {from},
+    );
+    _.each(tx.logs, log => wrapLogBigNumbers(log));
+    return tx;
+  }
+  public async batchCancelOrdersAsync(orders: Order[], from: string,
+                                      opts: {cancelTakerTokenAmounts?: BigNumber[]} = {}) {
+    const params = formatters.createBatchCancel(orders, opts.cancelTakerTokenAmounts);
+    const tx = await this.exchange.batchCancelOrders(
+      params.orderAddresses,
+      params.orderValues,
+      params.cancelTakerTokenAmounts,
+      {from},
+    );
+    _.each(tx.logs, log => wrapLogBigNumbers(log));
+    return tx;
+  }
+  public async getOrderHashAsync(order: Order): Promise<string> {
+    const shouldThrowOnInsufficientBalanceOrAllowance = false;
+    const params = order.createFill(shouldThrowOnInsufficientBalanceOrAllowance);
+    const orderHash = await this.exchange.getOrderHash(params.orderAddresses, params.orderValues);
+    return orderHash;
+  }
+  public async isValidSignatureAsync(order: Order): Promise<boolean> {
+    const isValidSignature = await this.exchange.isValidSignature(
+      order.params.maker,
+      order.params.orderHashHex,
+      order.params.v,
+      order.params.r,
+      order.params.s,
+    );
+    return isValidSignature;
+  }
+  public async isRoundingErrorAsync(numerator: BigNumber, denominator: BigNumber,
+                                    target: BigNumber): Promise<boolean> {
+    const isRoundingError = await this.exchange.isRoundingError(numerator, denominator, target);
+    return isRoundingError;
+  }
+  public async getPartialAmountAsync(numerator: BigNumber, denominator: BigNumber,
+                                     target: BigNumber): Promise<BigNumber> {
+    const partialAmount = new BigNumber(await this.exchange.getPartialAmount(numerator, denominator, target));
+    return partialAmount;
+  }
+}
+
+function wrapLogBigNumbers(log: any): any {
+  const argNames = _.keys(log.args);
+  for (const argName of argNames) {
+    const isWeb3BigNumber = _.startsWith(log.args[argName].constructor.toString(), 'function BigNumber(');
+    if (isWeb3BigNumber) {
+      log.args[argName] = new BigNumber(log.args[argName]);
+    }
+  }
+}