first commit

exchange/util/genMarketFiles/update-binance.js

@@ -0,0 +1,51 @@
+const _ = require('lodash');
+const fs = require('fs');
+const request = require('request-promise');
+const Promise = require('bluebird');
+
+
+let getOrderMinSize = currency => {
+  if (currency === 'BTC') return 0.001;
+  else if (currency === 'ETH') return 0.01;
+  else if (currency === 'USDT') return 10;
+  else return 1;
+};
+
+const options = {
+  url: 'https://www.binance.com/exchange/public/product',
+  headers: {
+    Connection: 'keep-alive',
+    'User-Agent': 'Request-Promise',
+  },
+  json: true,
+};
+
+request(options)
+  .then(body => {
+    if (!body && !body.data) {
+      throw new Error('Unable to fetch product list, response was empty');
+    }
+
+    let assets = _.uniqBy(_.map(body.data, market => market.baseAsset));
+    let currencies = _.uniqBy(_.map(body.data, market => market.quoteAsset));
+    let pairs = _.map(body.data, market => {
+      return {
+        pair: [market.quoteAsset, market.baseAsset],
+        minimalOrder: {
+          amount: parseFloat(market.minTrade),
+          price: parseFloat(market.tickSize),
+          order: getOrderMinSize(market.quoteAsset),
+        },
+      };
+    });
+
+    return { assets: assets, currencies: currencies, markets: pairs };
+  })
+  .then(markets => {
+    fs.writeFileSync('../../wrappers/binance-markets.json', JSON.stringify(markets, null, 2));
+    console.log(`Done writing Binance market data`);
+  })
+  .catch(err => {
+    console.log(`Couldn't import products from Binance`);
+    console.log(err);
+  });