OP-3279 Add /api/v1/pools/reserves endpoint (#33)

* OP-3279 Add /api/v1/pools/reserves endpoint

* OP-3279 Fixup

* OP-3279 Fixup

* OP-3279 Update version

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.15.25",
+  "version": "0.15.28-rc.0",
   "description": "Orion Protocol SDK",
   "main": "./lib/esm/index.js",
   "module": "./lib/esm/index.js",

src/services/OrionAggregator/index.ts

@@ -12,7 +12,7 @@ import { atomicSwapHistorySchema } from './schemas/atomicSwapHistorySchema';
 import { Exchange, SignedCancelOrderRequest, SignedOrder } from '../../types';
 import { pairConfigSchema } from './schemas';
 import {
-  aggregatedOrderbookSchema, exchangeOrderbookSchema,
+  aggregatedOrderbookSchema, exchangeOrderbookSchema, poolReservesSchema,
 } from './schemas/aggregatedOrderbookSchema';
 import networkCodes from '../../constants/networkCodes';
 
@@ -38,6 +38,7 @@ class OrionAggregator {
     this.getLockedBalance = this.getLockedBalance.bind(this);
     this.getAggregatedOrderbook = this.getAggregatedOrderbook.bind(this);
     this.getExchangeOrderbook = this.getExchangeOrderbook.bind(this);
+    this.getPoolReserves = this.getPoolReserves.bind(this);
   }
 
   getPairsList = () => fetchWithValidation(
@@ -59,7 +60,7 @@ class OrionAggregator {
 
   getExchangeOrderbook = (
     pair: string,
-    exchange: string,
+    exchange: Exchange,
     depth = 20,
     filterByBrokerBalances: boolean | null = null,
   ) => {
@@ -77,6 +78,19 @@ class OrionAggregator {
     );
   };
 
+  getPoolReserves = (
+    pair: string,
+    exchange: Exchange,
+  ) => {
+    const url = new URL(`${this.apiUrl}/api/v1/pools/reserves/${exchange}/${pair}`);
+    return fetchWithValidation(
+      url.toString(),
+      poolReservesSchema,
+      undefined,
+      errorSchema,
+    );
+  };
+
   getPairConfigs = () => fetchWithValidation(
     `${this.apiUrl}/api/v1/pairs/exchangeInfo`,
     exchangeInfoSchema,

src/services/OrionAggregator/schemas/aggregatedOrderbookSchema.ts

@@ -23,3 +23,9 @@ export const exchangeOrderbookSchema = z.object({
   asks: z.array(orderbookElementSchema),
   bids: z.array(orderbookElementSchema),
 });
+
+export const poolReservesSchema = z.object({
+  a: z.number(), // amount asset
+  p: z.number(), // price asset
+  indicativePrice: z.number(),
+});