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import { BigNumber } from '@0xproject/utils';
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]);
}
}
}
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