Major refactor

src/resolvers/categories-resolver.ts

@@ -0,0 +1,24 @@
+import { IResolverObject } from 'graphql-tools';
+import { CategoryAPI } from '../datasources/category-api';
+import { ProductAPI } from '../datasources/product-api';
+
+const Category: IResolverObject = {
+  async products({ id }, _args, { dataSources }) {
+    return (<ProductAPI>dataSources.productApi).getCategoryProducts(id);
+  },
+};
+
+async function getCategories(_, _args, { dataSources }) {
+  return (<CategoryAPI>dataSources.categoryApi).getCategories();
+}
+
+async function getCategory(_, { id }, { dataSources }) {
+  return (<CategoryAPI>dataSources.categoryApi).getCategoryById(id);
+}
+
+export const categoryTypeDefs = { Category };
+
+export const categoryQueryTypeDefs = {
+  categories: getCategories,
+  category: getCategory,
+};