Merge pull request #121 from madfish-solutions/TW-1159-temple-wallet-…

…backend-fix-exchange-rates

TW-1159 Update work with tzstats API (now called tzpro)

.env.dist

@@ -10,3 +10,4 @@ THREE_ROUTE_API_AUTH_TOKEN=
 REDIS_URL=
 ADD_NOTIFICATION_USERNAME=
 ADD_NOTIFICATION_PASSWORD=
+TZPRO_API_KEY=

README.md

@@ -7,7 +7,7 @@ The Express backend which helps Temple Wallet to decrease amount of requests to
 | Path                           | Description                                                                                                                                                                                                                 |
 | ------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | /api/dapps                     | Provides a list of dApps with their TVL, summary TVL and amount of TEZ locked in them.                                                                                                                                      |
-| /api/exchange-rates/tez        | Returns a single number, which is TEZ to USD exchange rate according to markets tickers from tzstats.com                                                                                                                    |
+| /api/exchange-rates/tez        | Returns a single number, which is TEZ to USD exchange rate according to markets tickers from TzPro API.com                                                                                                                    |
 | /api/exchange-rates            | Returns the exchange rates of tokens to USD based on Quipuswap and Dexter pools (for most of them), stats from TZero (only for Aspencoin) and exchange rates from Coingecko (for WRAP tokens which are still not in pools). |
 | /api/moonpay-sign              | Returns signed MoonPay url                                                                                                                                                                                                  |
 | /api/mobile-check              | Returns the minimum allowed versions of Android and IOS applications. Verifies App Check token.                                                                                                                             |

src/config.ts

@@ -12,7 +12,8 @@ export const EnvVars = {
   THREE_ROUTE_API_AUTH_TOKEN: getEnv('THREE_ROUTE_API_AUTH_TOKEN'),
   REDIS_URL: getEnv('REDIS_URL'),
   ADD_NOTIFICATION_USERNAME: getEnv('ADD_NOTIFICATION_USERNAME'),
-  ADD_NOTIFICATION_PASSWORD: getEnv('ADD_NOTIFICATION_PASSWORD')
+  ADD_NOTIFICATION_PASSWORD: getEnv('ADD_NOTIFICATION_PASSWORD'),
+  TZPRO_API_KEY: getEnv('TZPRO_API_KEY')
 };
 
 for (const name in EnvVars) {

src/utils/tezos.ts

@@ -3,6 +3,7 @@ import { tzip12 } from '@taquito/tzip12';
 import { tzip16 } from '@taquito/tzip16';
 import memoizee from 'memoizee';
 
+import { EnvVars } from '../config';
 import { ITicker } from '../interfaces/ticker.interface';
 import fetch from './fetch';
 import SingleQueryDataProvider from './SingleQueryDataProvider';
@@ -53,7 +54,9 @@ export const getStorage = memoizee(
 );
 
 const getTezExchangeRate = async () => {
-  const marketTickers = await fetch<Array<ITicker>>('https://api.tzstats.com/markets/tickers');
+  const marketTickers = await fetch<Array<ITicker>>(
+    `https://api.tzpro.io/markets/tickers?api_key=${EnvVars.TZPRO_API_KEY}`
+  );
   const usdTickers = marketTickers.filter(e => e.quote === 'USD' && e.base === 'XTZ');
   // price index: use all USD ticker last prices with equal weight
   const vol = usdTickers.reduce((s, t) => s + t.volume_base, 0) || null;