Added support for Historical Count Endpoint

Author: nishant-shrimpy

README.md

@@ -443,9 +443,22 @@ const assetPopularity = await client.getAssetPopularity();
 
 ### Historical Methods
 
+* [`getHistoricalCount`](https://developers.shrimpy.io/docs/#get-historical-count)
+```js
+const count = await client.getHistoricalCount(
+    'trade',                                        // type
+    'binance',                                      // exchange
+    'LTC',                                          // baseTradingSymbol
+    'BTC',                                          // quoteTradingSymbol
+    new Date("2018-05-19T01:00:00.000Z"),           // startTime
+    new Date("2018-11-02T02:00:00.000Z")            // endTime
+);
+```
+
 * [`getHistoricalInstruments`](https://developers.shrimpy.io/docs/#get-historical-instruments)
 ```js
 const instruments = await client.getHistoricalInstruments();
+const bittrexInstruments = await client.getHistoricalInstruments('bittrex');
 ```
 
 * [`getHistoricalTrades`](https://developers.shrimpy.io/docs/#get-historical-trades)

lib/client/shrimpy-api-client.ts

@@ -15,6 +15,7 @@ import {
     IExchangeAsset,
     IExchangeInfo,
     IHistoricalCandlestick,
+    IHistoricalCount,
     IHistoricalOrderBook,
     IHistoricalInstrument,
     IHistoricalTrade,
@@ -45,6 +46,7 @@ import {
     IExchangeInfoDto,
     IGuidIdResultDto,
     IHistoricalCandlestickDto,
+    IHistoricalCountDto,
     IHistoricalOrderBookDto,
     IHistoricalInstrumentDto,
     IHistoricalTradeDto,
@@ -756,6 +758,38 @@ export class ShrimpyApiClient {
         return this._historicalInstrumentsDtoConverter.convertFromDto(resultDto);
     }
 
+    public async getHistoricalCount(
+        type: 'trade' | 'orderbook',
+        exchange: string,
+        baseTradingSymbol: string,
+        quoteTradingSymbol: string,
+        startTime: Date,
+        endTime: Date
+    ): Promise<IHistoricalCount> {
+        const endpoint = `historical/count`;
+        const parameters: {
+            type: string,
+            exchange: string,
+            baseTradingSymbol: string,
+            quoteTradingSymbol: string,
+            startTime: string,
+            endTime: string
+        } = {
+            type: type,
+            exchange: exchange,
+            baseTradingSymbol: baseTradingSymbol,
+            quoteTradingSymbol: quoteTradingSymbol,
+            startTime: this._dateDtoConverter.convertToDto(startTime),
+            endTime: this._dateDtoConverter.convertToDto(endTime)
+        };
+        const countDto = await this._callEndpoint<IHistoricalCountDto>(endpoint, 'GET', parameters, true);
+        const result: IHistoricalCount = {
+            count: countDto.count
+        };
+
+        return result;
+    }
+
 /* Management */
 
     public async getStatus(): Promise<IManagementStatus> {

lib/dtos/ihistorical-count-dto.ts

@@ -0,0 +1,3 @@
+export interface IHistoricalCountDto {
+    count: number;
+}

lib/dtos/index.ts

@@ -17,6 +17,7 @@ export * from './iexchange-info-dto';
 export * from './iexchange-order-book-dto';
 export * from './iguid-id-result-dto';
 export * from './ihistorical-candlestick-dto';
+export * from './ihistorical-count-dto';
 export * from './ihistorical-order-book-dto';
 export * from './ihistorical-instrument-dto';
 export * from './ihistorical-trade-dto';

lib/models/ihistorical-count.ts

@@ -0,0 +1,3 @@
+export interface IHistoricalCount {
+    count: number;
+}

lib/models/index.ts

@@ -16,6 +16,7 @@ export * from './iexchange-asset';
 export * from './iexchange-info';
 export * from './iexchange-order-book';
 export * from './ihistorical-candlestick';
+export * from './ihistorical-count';
 export * from './ihistorical-order-book';
 export * from './ihistorical-instrument';
 export * from './ihistorical-trade';

package.json

@@ -1,6 +1,6 @@
 {
   "name": "shrimpy-node",
-  "version": "0.2.9",
+  "version": "0.2.10",
   "author": "Shrimpy",
   "bugs": "https://github.com/shrimpy-dev/shrimpy-node/issues",
   "contributors": [