1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
import { AssetBuyerError, InsufficientAssetLiquidityError } from '@0x/asset-buyer';
import { AssetProxyId, ObjectMap } from '@0x/types';
import { BigNumber } from '@0x/utils';
import { Web3Wrapper } from '@0x/web3-wrapper';
import * as _ from 'lodash';
import { BIG_NUMBER_ZERO, DEFAULT_UNKOWN_ASSET_NAME } from '../constants';
import { assetDataNetworkMapping } from '../data/asset_data_network_mapping';
import { Asset, AssetMetaData, ERC20Asset, Network, ZeroExInstantError } from '../types';
export const assetUtils = {
createAssetsFromAssetDatas: (
assetDatas: string[],
assetMetaDataMap: ObjectMap<AssetMetaData>,
network: Network,
): Asset[] => {
const arrayOfAssetOrUndefined = _.map(assetDatas, assetData =>
assetUtils.createAssetFromAssetDataIfExists(assetData, assetMetaDataMap, network),
);
return _.compact(arrayOfAssetOrUndefined);
},
createAssetFromAssetDataIfExists: (
assetData: string,
assetMetaDataMap: ObjectMap<AssetMetaData>,
network: Network,
): Asset | undefined => {
const metaData = assetUtils.getMetaDataIfExists(assetData, assetMetaDataMap, network);
if (_.isUndefined(metaData)) {
return;
}
return {
assetData: assetData.toLowerCase(),
metaData,
};
},
createAssetFromAssetDataOrThrow: (
assetData: string,
assetMetaDataMap: ObjectMap<AssetMetaData>,
network: Network,
): Asset => {
return {
assetData: assetData.toLowerCase(),
metaData: assetUtils.getMetaDataOrThrow(assetData, assetMetaDataMap, network),
};
},
getMetaDataOrThrow: (assetData: string, metaDataMap: ObjectMap<AssetMetaData>, network: Network): AssetMetaData => {
const metaDataIfExists = assetUtils.getMetaDataIfExists(assetData, metaDataMap, network);
if (_.isUndefined(metaDataIfExists)) {
throw new Error(ZeroExInstantError.AssetMetaDataNotAvailable);
}
return metaDataIfExists;
},
getMetaDataIfExists: (
assetData: string,
metaDataMap: ObjectMap<AssetMetaData>,
network: Network,
): AssetMetaData | undefined => {
let mainnetAssetData: string | undefined = assetData;
if (network !== Network.Mainnet) {
const mainnetAssetDataIfExists = assetUtils.getAssociatedAssetDataIfExists(
assetData.toLowerCase(),
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)) {
return;
}
const metaData = metaDataMap[mainnetAssetData.toLowerCase()];
if (_.isUndefined(metaData)) {
return;
}
return metaData;
},
bestNameForAsset: (asset?: Asset, defaultName: string = DEFAULT_UNKOWN_ASSET_NAME): 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;
}
},
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];
},
getERC20AssetsFromAssets: (assets: Asset[]): ERC20Asset[] => {
const erc20sOrUndefined = _.map(assets, asset =>
asset.metaData.assetProxyId === AssetProxyId.ERC20 ? (asset as ERC20Asset) : undefined,
);
return _.compact(erc20sOrUndefined);
},
assetBuyerErrorMessage: (asset: ERC20Asset, error: Error): string | undefined => {
if (error.message === AssetBuyerError.InsufficientAssetLiquidity) {
const assetName = assetUtils.bestNameForAsset(asset, 'of this asset');
if (
error instanceof InsufficientAssetLiquidityError &&
error.amountAvailableToFill.isGreaterThan(BIG_NUMBER_ZERO)
) {
const unitAmountAvailableToFill = Web3Wrapper.toUnitAmount(
error.amountAvailableToFill,
asset.metaData.decimals,
);
const roundedUnitAmountAvailableToFill = unitAmountAvailableToFill.decimalPlaces(
2,
BigNumber.ROUND_DOWN,
);
if (roundedUnitAmountAvailableToFill.isGreaterThan(BIG_NUMBER_ZERO)) {
return `There are only ${roundedUnitAmountAvailableToFill} ${assetName} available to buy`;
}
}
return `Not enough ${assetName} available`;
} else if (error.message === AssetBuyerError.InsufficientZrxLiquidity) {
return 'Not enough ZRX available';
} else if (
error.message === AssetBuyerError.StandardRelayerApiError ||
error.message.startsWith(AssetBuyerError.AssetUnavailable)
) {
const assetName = assetUtils.bestNameForAsset(asset, 'This asset');
return `${assetName} is currently unavailable`;
}
return undefined;
},
};
|
