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// tslint:disable:no-unnecessary-type-assertion
import { AbstractOrderFilledCancelledFetcher, orderHashUtils } from '@0x/order-utils';
import { SignedOrder } from '@0x/types';
import { BigNumber } from '@0x/utils';
import { BlockParamLiteral } from 'ethereum-types';
import { ExchangeWrapper } from '../contract_wrappers/exchange_wrapper';
export class OrderFilledCancelledFetcher implements AbstractOrderFilledCancelledFetcher {
private readonly _exchange: ExchangeWrapper;
private readonly _stateLayer: BlockParamLiteral;
constructor(exchange: ExchangeWrapper, stateLayer: BlockParamLiteral) {
this._exchange = exchange;
this._stateLayer = stateLayer;
}
public async getFilledTakerAmountAsync(orderHash: string): Promise<BigNumber> {
const filledTakerAmount = this._exchange.getFilledTakerAssetAmountAsync(orderHash, {
defaultBlock: this._stateLayer,
});
return filledTakerAmount;
}
public async isOrderCancelledAsync(signedOrder: SignedOrder): Promise<boolean> {
const orderHash = orderHashUtils.getOrderHashHex(signedOrder);
const isCancelled = await this._exchange.isCancelledAsync(orderHash);
const orderEpoch = await this._exchange.getOrderEpochAsync(
signedOrder.makerAddress,
signedOrder.senderAddress,
{
defaultBlock: this._stateLayer,
},
);
const isCancelledByOrderEpoch = orderEpoch > signedOrder.salt;
return isCancelled || isCancelledByOrderEpoch;
}
public getZRXAssetData(): string {
const zrxAssetData = this._exchange.getZRXAssetData();
return zrxAssetData;
}
}
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