From 539c243733c60fe083ed0e3e7d7663981f5d7663 Mon Sep 17 00:00:00 2001 From: Fabio Berger Date: Tue, 4 Sep 2018 16:23:02 +0100 Subject: Move fetchers to contract-wrappers --- packages/contract-wrappers/CHANGELOG.json | 4 ++ .../asset_balance_and_proxy_allowance_fetcher.ts | 77 ++++++++++++++++++++++ .../src/fetchers/order_filled_cancelled_fetcher.ts | 30 +++++++++ 3 files changed, 111 insertions(+) create mode 100644 packages/contract-wrappers/src/fetchers/asset_balance_and_proxy_allowance_fetcher.ts create mode 100644 packages/contract-wrappers/src/fetchers/order_filled_cancelled_fetcher.ts (limited to 'packages/contract-wrappers') diff --git a/packages/contract-wrappers/CHANGELOG.json b/packages/contract-wrappers/CHANGELOG.json index b7c89a325..8a41c560e 100644 --- a/packages/contract-wrappers/CHANGELOG.json +++ b/packages/contract-wrappers/CHANGELOG.json @@ -4,6 +4,10 @@ "changes": [ { "note": "Add `OrderValidatorWrapper`" + }, + { + "note": + "Export `AssetBalanceAndProxyAllowanceFetcher` and `OrderFilledCancelledFetcher` implementations" } ] }, diff --git a/packages/contract-wrappers/src/fetchers/asset_balance_and_proxy_allowance_fetcher.ts b/packages/contract-wrappers/src/fetchers/asset_balance_and_proxy_allowance_fetcher.ts new file mode 100644 index 000000000..023cd5ac3 --- /dev/null +++ b/packages/contract-wrappers/src/fetchers/asset_balance_and_proxy_allowance_fetcher.ts @@ -0,0 +1,77 @@ +// tslint:disable:no-unnecessary-type-assertion +import { AbstractBalanceAndProxyAllowanceFetcher, assetDataUtils } from '@0xproject/order-utils'; +import { AssetProxyId, ERC20AssetData, ERC721AssetData } from '@0xproject/types'; +import { BigNumber } from '@0xproject/utils'; +import { BlockParamLiteral } from 'ethereum-types'; + +import { ERC20TokenWrapper } from '../contract_wrappers/erc20_token_wrapper'; +import { ERC721TokenWrapper } from '../contract_wrappers/erc721_token_wrapper'; + +export class AssetBalanceAndProxyAllowanceFetcher implements AbstractBalanceAndProxyAllowanceFetcher { + private readonly _erc20Token: ERC20TokenWrapper; + private readonly _erc721Token: ERC721TokenWrapper; + private readonly _stateLayer: BlockParamLiteral; + constructor(erc20Token: ERC20TokenWrapper, erc721Token: ERC721TokenWrapper, stateLayer: BlockParamLiteral) { + this._erc20Token = erc20Token; + this._erc721Token = erc721Token; + this._stateLayer = stateLayer; + } + public async getBalanceAsync(assetData: string, userAddress: string): Promise { + const decodedAssetData = assetDataUtils.decodeAssetDataOrThrow(assetData); + if (decodedAssetData.assetProxyId === AssetProxyId.ERC20) { + const decodedERC20AssetData = decodedAssetData as ERC20AssetData; + const balance = await this._erc20Token.getBalanceAsync(decodedERC20AssetData.tokenAddress, userAddress, { + defaultBlock: this._stateLayer, + }); + return balance; + } else { + const decodedERC721AssetData = decodedAssetData as ERC721AssetData; + const tokenOwner = await this._erc721Token.getOwnerOfAsync( + decodedERC721AssetData.tokenAddress, + decodedERC721AssetData.tokenId, + { + defaultBlock: this._stateLayer, + }, + ); + const balance = tokenOwner === userAddress ? new BigNumber(1) : new BigNumber(0); + return balance; + } + } + public async getProxyAllowanceAsync(assetData: string, userAddress: string): Promise { + const decodedAssetData = assetDataUtils.decodeAssetDataOrThrow(assetData); + if (decodedAssetData.assetProxyId === AssetProxyId.ERC20) { + const decodedERC20AssetData = decodedAssetData as ERC20AssetData; + const proxyAllowance = await this._erc20Token.getProxyAllowanceAsync( + decodedERC20AssetData.tokenAddress, + userAddress, + { + defaultBlock: this._stateLayer, + }, + ); + return proxyAllowance; + } else { + const decodedERC721AssetData = decodedAssetData as ERC721AssetData; + + const isApprovedForAll = await this._erc721Token.isProxyApprovedForAllAsync( + decodedERC721AssetData.tokenAddress, + userAddress, + { + defaultBlock: this._stateLayer, + }, + ); + if (isApprovedForAll) { + return new BigNumber(this._erc20Token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS); + } else { + const isApproved = await this._erc721Token.isProxyApprovedAsync( + decodedERC721AssetData.tokenAddress, + decodedERC721AssetData.tokenId, + { + defaultBlock: this._stateLayer, + }, + ); + const proxyAllowance = isApproved ? new BigNumber(1) : new BigNumber(0); + return proxyAllowance; + } + } + } +} diff --git a/packages/contract-wrappers/src/fetchers/order_filled_cancelled_fetcher.ts b/packages/contract-wrappers/src/fetchers/order_filled_cancelled_fetcher.ts new file mode 100644 index 000000000..ba6f5fb5e --- /dev/null +++ b/packages/contract-wrappers/src/fetchers/order_filled_cancelled_fetcher.ts @@ -0,0 +1,30 @@ +// tslint:disable:no-unnecessary-type-assertion +import { AbstractOrderFilledCancelledFetcher } from '@0xproject/order-utils'; +import { BigNumber } from '@0xproject/utils'; +import { BlockParamLiteral } from 'ethereum-types'; + +import { ERC20TokenWrapper } from '../contract_wrappers/erc20_token_wrapper'; +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 { + const filledTakerAmount = this._exchange.getFilledTakerAssetAmountAsync(orderHash, { + defaultBlock: this._stateLayer, + }); + return filledTakerAmount; + } + public async isOrderCancelledAsync(orderHash: string): Promise { + const isCancelled = await this._exchange.isCancelledAsync(orderHash); + return isCancelled; + } + public getZRXAssetData(): string { + const zrxAssetData = this._exchange.getZRXAssetData(); + return zrxAssetData; + } +} -- cgit v1.2.3