Setup Alpaca API implementation

src/alpaca/exchange.ts

@@ -1,9 +1,26 @@
 import Alpaca from '@alpacahq/alpaca-trade-api'
+import { AlpacaPortfolioProvider } from './portfolio'
+import { AlpacaQuoteProvider } from './quote'
 import { Exchange } from '../interface/exchange'
+import { PortfolioProvider } from '../interface/portfolio'
+import { QuoteProvider } from '../interface/quote'
 
 export class AlpacaExchange implements Exchange {
     readonly alpaca: Alpaca;
 
+    /**
+     * The portfolio provider for the exchange.
+     */
+    readonly portfolioProvider: PortfolioProvider;
+
+    /**
+     * The quote provider for the exchange.
+     */
+    readonly quoteProvider: QuoteProvider;
+
+    /**
+     * The name of the exchange.
+     */
     readonly name: string;
 
     constructor(keyId: string, secretKey: string, paper: boolean) {
@@ -13,6 +30,9 @@ export class AlpacaExchange implements Exchange {
             paper: paper
         });
 
+        this.portfolioProvider = new AlpacaPortfolioProvider(this.alpaca);
+        this.quoteProvider = new AlpacaQuoteProvider(this.alpaca);
+
         this.name = 'Alpaca';
     }
-}
+}