From a764dfa789ba44e519371b4a1e4569db7f551fb7 Mon Sep 17 00:00:00 2001
From: fragosti <francesco.agosti93@gmail.com>
Date: Thu, 18 Oct 2018 10:43:41 -0700
Subject: feat: MVP of passing in sraApiUrl, assetData and other settings from
 render method

---
 packages/instant/src/util/asset.ts | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 packages/instant/src/util/asset.ts

(limited to 'packages/instant/src/util/asset.ts')

diff --git a/packages/instant/src/util/asset.ts b/packages/instant/src/util/asset.ts
new file mode 100644
index 000000000..ec22276ae
--- /dev/null
+++ b/packages/instant/src/util/asset.ts
@@ -0,0 +1,34 @@
+import { assetDataUtils } from '@0xproject/order-utils';
+import { AssetProxyId, ObjectMap } from '@0xproject/types';
+import * as _ from 'lodash';
+
+import { assetDataNetworkMapping } from '../data/asset_data_network_mapping';
+import { Asset, AssetMetaData, Network, ZeroExInstantError } from '../types';
+
+export const assetUtils = {
+    createAssetFromAssetData: (assetData: string, assetMetaDataMap: ObjectMap<AssetMetaData>): Asset => {
+        return {
+            assetProxyId: assetDataUtils.decodeAssetProxyId(assetData),
+            assetData,
+            metaData: assetUtils.getMetaDataOrThrow(assetData, assetMetaDataMap),
+        };
+    },
+    getMetaDataOrThrow: (
+        assetData: string,
+        metaDataMap: ObjectMap<AssetMetaData>,
+        network: Network = Network.Mainnet,
+    ): AssetMetaData => {
+        let mainnetAssetData: string | undefined = assetData;
+        if (network !== Network.Mainnet) {
+            mainnetAssetData = assetDataNetworkMapping.getAssociatedAssetDataIfExists(assetData, network);
+        }
+        if (_.isUndefined(mainnetAssetData)) {
+            throw new Error(ZeroExInstantError.AssetMetaDataNotAvailable);
+        }
+        const metaData = metaDataMap[mainnetAssetData];
+        if (_.isUndefined(metaData)) {
+            throw new Error();
+        }
+        return metaData;
+    },
+};
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