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import { SignedOrder } from '@0x/types';
import { BigNumber } from '@0x/utils';
import * as _ from 'lodash';
import { AbstractOrderFilledCancelledFetcher } from '../abstract/abstract_order_filled_cancelled_fetcher';
import { AbstractOrderFilledCancelledLazyStore } from '../abstract/abstract_order_filled_cancelled_lazy_store';
import { orderHashUtils } from '../order_hash';
/**
* Copy on read store for balances/proxyAllowances of tokens/accounts
*/
export class OrderFilledCancelledLazyStore implements AbstractOrderFilledCancelledLazyStore {
private readonly _orderFilledCancelledFetcher: AbstractOrderFilledCancelledFetcher;
private _filledTakerAmount: {
[orderHash: string]: BigNumber;
};
private _isCancelled: {
[orderHash: string]: boolean;
};
/**
* Instantiate a OrderFilledCancelledLazyStore
* @param orderFilledCancelledFetcher Class instance that implements the AbstractOrderFilledCancelledFetcher
* @returns An instance of OrderFilledCancelledLazyStore
*/
constructor(orderFilledCancelledFetcher: AbstractOrderFilledCancelledFetcher) {
this._orderFilledCancelledFetcher = orderFilledCancelledFetcher;
this._filledTakerAmount = {};
this._isCancelled = {};
}
/**
* Get the filledTakerAssetAmount of an order
* @param orderHash OrderHash from order of interest
* @return filledTakerAssetAmount
*/
public async getFilledTakerAmountAsync(orderHash: string): Promise<BigNumber> {
if (_.isUndefined(this._filledTakerAmount[orderHash])) {
const filledTakerAmount = await this._orderFilledCancelledFetcher.getFilledTakerAmountAsync(orderHash);
this.setFilledTakerAmount(orderHash, filledTakerAmount);
}
const cachedFilledTakerAmount = this._filledTakerAmount[orderHash];
return cachedFilledTakerAmount;
}
/**
* Set the filledTakerAssetAmount of an order
* @param orderHash OrderHash from order of interest
* @param filledTakerAmount Desired filledTakerAssetAmount
*/
public setFilledTakerAmount(orderHash: string, filledTakerAmount: BigNumber): void {
this._filledTakerAmount[orderHash] = filledTakerAmount;
}
/**
* Clear the filledTakerAssetAmount of an order
* @param orderHash OrderHash from order of interest
*/
public deleteFilledTakerAmount(orderHash: string): void {
delete this._filledTakerAmount[orderHash];
}
/**
* Check if an order has been cancelled
* @param orderHash OrderHash from order of interest
* @return Whether the order has been cancelled
*/
public async getIsCancelledAsync(signedOrder: SignedOrder): Promise<boolean> {
const orderHash = orderHashUtils.getOrderHashHex(signedOrder);
if (_.isUndefined(this._isCancelled[orderHash])) {
const isCancelled = await this._orderFilledCancelledFetcher.isOrderCancelledAsync(signedOrder);
this.setIsCancelled(orderHash, isCancelled);
}
const cachedIsCancelled = this._isCancelled[orderHash]; // tslint:disable-line:boolean-naming
return cachedIsCancelled;
}
/**
* Set whether an order has been cancelled or not
* @param orderHash OrderHash from order of interest
* @param isCancelled Whether this order should be cancelled or not
*/
public setIsCancelled(orderHash: string, isCancelled: boolean): void {
this._isCancelled[orderHash] = isCancelled;
}
/**
* Clear whether the order has been cancelled if already set
* @param orderHash OrderHash from order of interest
*/
public deleteIsCancelled(orderHash: string): void {
delete this._isCancelled[orderHash];
}
/**
* Clear all filled/cancelled state
*/
public deleteAll(): void {
this.deleteAllFilled();
this.deleteAllIsCancelled();
}
/**
* Clear all cancelled state
*/
public deleteAllIsCancelled(): void {
this._isCancelled = {};
}
/**
* Clear all filled state
*/
public deleteAllFilled(): void {
this._filledTakerAmount = {};
}
/**
* Get the ZRX assetData
*/
public getZRXAssetData(): string {
const zrxAssetData = this._orderFilledCancelledFetcher.getZRXAssetData();
return zrxAssetData;
}
}
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