import { AssetProxyId, ObjectMap } from '@0x/types'; import * as _ from 'lodash'; import { assetDataNetworkMapping } from '../data/asset_data_network_mapping'; import { Asset, AssetMetaData, ERC20Asset, Network, ZeroExInstantError } from '../types'; export const assetUtils = { createAssetFromAssetData: ( assetData: string, assetMetaDataMap: ObjectMap, network: Network, ): Asset => { return { assetData, metaData: assetUtils.getMetaDataOrThrow(assetData, assetMetaDataMap, network), }; }, getMetaDataOrThrow: (assetData: string, metaDataMap: ObjectMap, network: Network): AssetMetaData => { let mainnetAssetData: string | undefined = assetData; if (network !== Network.Mainnet) { const mainnetAssetDataIfExists = assetUtils.getAssociatedAssetDataIfExists(assetData, network); // Just so we don't fail in the case where we are on a non-mainnet network, // but pass in a valid mainnet assetData. mainnetAssetData = mainnetAssetDataIfExists || assetData; } if (_.isUndefined(mainnetAssetData)) { throw new Error(ZeroExInstantError.AssetMetaDataNotAvailable); } const metaData = metaDataMap[mainnetAssetData]; if (_.isUndefined(metaData)) { throw new Error(ZeroExInstantError.AssetMetaDataNotAvailable); } return metaData; }, bestNameForAsset: (asset?: Asset, defaultName: string = '???'): string => { if (_.isUndefined(asset)) { return defaultName; } const metaData = asset.metaData; switch (metaData.assetProxyId) { case AssetProxyId.ERC20: return metaData.symbol.toUpperCase(); case AssetProxyId.ERC721: return metaData.name; default: return defaultName; } }, formattedSymbolForAsset: (asset?: ERC20Asset, defaultName: string = '???'): string => { if (_.isUndefined(asset)) { return defaultName; } const symbol = asset.metaData.symbol; if (symbol.length <= 5) { return symbol; } return `${symbol.slice(0, 3)}…`; }, getAssociatedAssetDataIfExists: (assetData: string, network: Network): string | undefined => { const assetDataGroupIfExists = _.find(assetDataNetworkMapping, value => value[network] === assetData); if (_.isUndefined(assetDataGroupIfExists)) { return; } return assetDataGroupIfExists[Network.Mainnet]; }, };