Examples for presentation.

sources/Example/Bad/APIService.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Example\Bad;
+
+use GuzzleHttp\Client;
+
+class APIService
+{
+    private Repository $dbService;
+
+    private Client $client;
+
+    public function __construct(Repository $dbService, Client $client)
+    {
+        $this->dbService = $dbService;
+        $this->client = $client;
+    }
+
+    public function getApiData(string $filter) : array
+    {
+        $response = $this->client->request('GET', 'api_endpoint/products', [
+            'query' => ['filter'=>$filter]
+        ]);
+
+        $json = $response->getBody()->getContents();
+
+
+        return json_decode($json, true);
+    }
+
+
+    /**
+     * @return Product[]
+     */
+    public function getProducts(string $filter) : array {
+
+        $data = $this->getApiData($filter);
+
+        $skus = [];
+        foreach ($data as $product) {
+            $skus[] = $product['sku'];
+        }
+        $products = $this->dbService->getProducts($skus);
+
+        /** @var Product[] $productsMap */
+        $productsMap = [];
+        foreach ($products as $product) {
+            $productsMap[$product->sku] = $product;
+        }
+
+        foreach ($data as $apiProduct) {
+            $productsMap[$apiProduct['sku']]->quantity = $apiProduct['amount'];
+        }
+
+        return $products;
+    }
+}