Added product admin features

src/datasources/market-api.ts

@@ -0,0 +1,35 @@
+import { SQLDataSource } from 'datasource-sql';
+import { Market } from '../types/market-types';
+
+const MINUTE = 60;
+
+export class MarketAPI extends SQLDataSource {
+  constructor(config) {
+    super(config);
+  }
+
+  async getMarketById(id: number): Promise<Market> {
+    return this.knex
+      .select('*')
+      .from('markets')
+      .where('id', id)
+      .first()
+      .cache(MINUTE * 5);
+  }
+
+  async getMarketByName(name: string): Promise<Market> {
+    return this.knex
+      .select('*')
+      .from('markets')
+      .where('name', name)
+      .first()
+      .cache(MINUTE * 5);
+  }
+
+  async getMarkets(): Promise<Array<Market>> {
+    return this.knex
+      .select('*')
+      .from('markets')
+      .cache(MINUTE * 5);
+  }
+}