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Diffstat (limited to 'src/utils/order_state_utils.ts')
-rw-r--r-- | src/utils/order_state_utils.ts | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/src/utils/order_state_utils.ts b/src/utils/order_state_utils.ts deleted file mode 100644 index f82601cae..000000000 --- a/src/utils/order_state_utils.ts +++ /dev/null @@ -1,119 +0,0 @@ -import * as _ from 'lodash'; -import * as Web3 from 'web3'; -import BigNumber from 'bignumber.js'; -import { - ExchangeContractErrs, - SignedOrder, - OrderRelevantState, - MethodOpts, - OrderState, - OrderStateValid, - OrderStateInvalid, -} from '../types'; -import {ZeroEx} from '../0x'; -import {TokenWrapper} from '../contract_wrappers/token_wrapper'; -import {ExchangeWrapper} from '../contract_wrappers/exchange_wrapper'; -import {utils} from '../utils/utils'; -import {constants} from '../utils/constants'; -import {OrderFilledCancelledLazyStore} from '../stores/order_filled_cancelled_lazy_store'; -import {BalanceAndProxyAllowanceLazyStore} from '../stores/balance_proxy_allowance_lazy_store'; - -export class OrderStateUtils { - private balanceAndProxyAllowanceLazyStore: BalanceAndProxyAllowanceLazyStore; - private orderFilledCancelledLazyStore: OrderFilledCancelledLazyStore; - constructor(balanceAndProxyAllowanceLazyStore: BalanceAndProxyAllowanceLazyStore, - orderFilledCancelledLazyStore: OrderFilledCancelledLazyStore) { - this.balanceAndProxyAllowanceLazyStore = balanceAndProxyAllowanceLazyStore; - this.orderFilledCancelledLazyStore = orderFilledCancelledLazyStore; - } - public async getOrderStateAsync(signedOrder: SignedOrder): Promise<OrderState> { - const orderRelevantState = await this.getOrderRelevantStateAsync(signedOrder); - const orderHash = ZeroEx.getOrderHashHex(signedOrder); - try { - this.validateIfOrderIsValid(signedOrder, orderRelevantState); - const orderState: OrderStateValid = { - isValid: true, - orderHash, - orderRelevantState, - }; - return orderState; - } catch (err) { - const orderState: OrderStateInvalid = { - isValid: false, - orderHash, - error: err.message, - }; - return orderState; - } - } - public async getOrderRelevantStateAsync(signedOrder: SignedOrder): Promise<OrderRelevantState> { - // HACK: We access the private property here but otherwise the interface will be less nice. - // If we pass it from the instantiator - there is no opportunity to get it there - // because JS doesn't support async constructors. - // Moreover - it's cached under the hood so it's equivalent to an async constructor. - const exchange = (this.orderFilledCancelledLazyStore as any).exchange as ExchangeWrapper; - const zrxTokenAddress = await exchange.getZRXTokenAddressAsync(); - const orderHash = ZeroEx.getOrderHashHex(signedOrder); - const makerBalance = await this.balanceAndProxyAllowanceLazyStore.getBalanceAsync( - signedOrder.makerTokenAddress, signedOrder.maker, - ); - const makerProxyAllowance = await this.balanceAndProxyAllowanceLazyStore.getProxyAllowanceAsync( - signedOrder.makerTokenAddress, signedOrder.maker, - ); - const makerFeeBalance = await this.balanceAndProxyAllowanceLazyStore.getBalanceAsync( - zrxTokenAddress, signedOrder.maker, - ); - const makerFeeProxyAllowance = await this.balanceAndProxyAllowanceLazyStore.getProxyAllowanceAsync( - zrxTokenAddress, signedOrder.maker, - ); - const filledTakerTokenAmount = await this.orderFilledCancelledLazyStore.getFilledTakerAmountAsync(orderHash); - const canceledTakerTokenAmount = await this.orderFilledCancelledLazyStore.getCancelledTakerAmountAsync( - orderHash, - ); - const unavailableTakerTokenAmount = await exchange.getUnavailableTakerAmountAsync(orderHash); - const totalMakerTokenAmount = signedOrder.makerTokenAmount; - const totalTakerTokenAmount = signedOrder.takerTokenAmount; - const remainingTakerTokenAmount = totalTakerTokenAmount.minus(unavailableTakerTokenAmount); - const remainingMakerTokenAmount = remainingTakerTokenAmount.times(totalMakerTokenAmount) - .dividedToIntegerBy(totalTakerTokenAmount); - const fillableMakerTokenAmount = BigNumber.min([makerProxyAllowance, makerBalance]); - const remainingFillableMakerTokenAmount = BigNumber.min(fillableMakerTokenAmount, remainingMakerTokenAmount); - // TODO: Handle edge case where maker token is ZRX with fee - const orderRelevantState = { - makerBalance, - makerProxyAllowance, - makerFeeBalance, - makerFeeProxyAllowance, - filledTakerTokenAmount, - canceledTakerTokenAmount, - remainingFillableMakerTokenAmount, - }; - return orderRelevantState; - } - private validateIfOrderIsValid(signedOrder: SignedOrder, orderRelevantState: OrderRelevantState): void { - const unavailableTakerTokenAmount = orderRelevantState.canceledTakerTokenAmount.add( - orderRelevantState.filledTakerTokenAmount, - ); - const availableTakerTokenAmount = signedOrder.takerTokenAmount.minus(unavailableTakerTokenAmount); - if (availableTakerTokenAmount.eq(0)) { - throw new Error(ExchangeContractErrs.OrderRemainingFillAmountZero); - } - - if (orderRelevantState.makerBalance.eq(0)) { - throw new Error(ExchangeContractErrs.InsufficientMakerBalance); - } - if (orderRelevantState.makerProxyAllowance.eq(0)) { - throw new Error(ExchangeContractErrs.InsufficientMakerAllowance); - } - if (!signedOrder.makerFee.eq(0)) { - if (orderRelevantState.makerFeeBalance.eq(0)) { - throw new Error(ExchangeContractErrs.InsufficientMakerFeeBalance); - } - if (orderRelevantState.makerFeeProxyAllowance.eq(0)) { - throw new Error(ExchangeContractErrs.InsufficientMakerFeeAllowance); - } - } - // TODO Add linear function solver when maker token is ZRX #badass - // Return the max amount that's fillable - } -} |