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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]);
}
}
}
|
