From e8a10b384896a6a2c4d08837e4fd155fb05f6f76 Mon Sep 17 00:00:00 2001
From: Daniel Ternyak <dternyak@gmail.com>
Date: Sun, 11 Jun 2017 20:01:27 -0500
Subject: [PATCH] Swap: Initial Bity API Class

---
 common/api/bity.js | 82 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 common/api/bity.js

diff --git a/common/api/bity.js b/common/api/bity.js
new file mode 100644
index 00000000..b7b820c7
--- /dev/null
+++ b/common/api/bity.js
@@ -0,0 +1,82 @@
+import axios from 'axios';
+
+// https://stackoverflow.com/questions/9828684/how-to-get-all-arguments-of-a-callback-function
+export function combineAndUpper() {
+    let args = [];
+    let newString = '';
+    for (let i = 0; i < arguments.length; ++i) args[i] = arguments[i];
+    args.forEach((each) => {
+        newString = newString.concat(each.toUpperCase())
+    });
+    return newString
+}
+
+export default class Bity {
+    constructor() {
+        this.SERVERURL = 'https://myetherapi.com';
+        this.bityAPI = 'https://bity.com/api';
+        this.decimals = 6;
+        this.ethExplorer = 'https://etherscan.io/tx/[[txHash]]';
+        this.btcExplorer = 'https://blockchain.info/tx/[[txHash]]';
+        this.validStatus = ['RCVE', 'FILL', 'CONF', 'EXEC'];
+        this.invalidStatus = ['CANC'];
+        this.mainPairs = ['REP', 'ETH'];
+        this.min = 0.01;
+        this.max = 3;
+        this.priceLoaded = false;
+        this.postConfig = {
+            headers: {
+                'Content-Type': 'application/json; charset=UTF-8'
+            }
+        };
+    }
+
+    findRateFromBityRateList(rateObjects, pairName) {
+        return rateObjects.find(x => x.pair === pairName);
+    }
+
+    _getRate(bityRates, origin, destination) {
+        let pairName = combineAndUpper(origin, destination);
+        let rateObjects = bityRates.data.objects;
+        return this.findRateFromBityRateList(rateObjects, pairName);
+    }
+
+    /**
+     * Gives you multiple rates from Bitys API without making multiple API calls
+     * @param arrayOfOriginAndDestinationDicts - [{origin: 'BTC', destination: 'ETH'}, {origin: 'BTC', destination: 'REP}]
+     */
+    getMultipleRates(arrayOfOriginAndDestinationDicts) {
+        let mappedRates = {};
+        return this.requestAllRates()
+            .then((bityRates) => {
+                arrayOfOriginAndDestinationDicts.forEach((each) => {
+                    let origin = each.origin;
+                    let destination = each.destination;
+                    let pairName = combineAndUpper(origin, destination);
+                    let rate = this._getRate(bityRates, origin, destination);
+                    mappedRates[pairName] = parseFloat(rate.rate_we_sell)
+                });
+                return mappedRates
+            })
+        // TODO - catch errors
+    }
+
+    getAllRates() {
+        let mappedRates = {};
+        return this.requestAllRates()
+            .then((bityRates) => {
+                bityRates.data.objects.forEach((each) => {
+                    let pairName = each.pair;
+                    mappedRates[pairName] = parseFloat(each.rate_we_sell)
+                });
+                return mappedRates
+            })
+        // TODO - catch errors
+    }
+
+    requestAllRates() {
+        let path = '/v1/rate2/';
+        let bityURL = this.bityAPI + path
+        return axios.get(bityURL)
+    }
+}