Finished eBay API request via UPC

api/server.js

@@ -1,19 +1,72 @@
 const express = require("express");
-const cors = require("cors"); // Import the cors middleware
+const cors = require("cors");
+const fetch = require("node-fetch"); // Ensure you have 'node-fetch' installed
 const app = express();
 
-app.use(cors()); // Use cors middleware to enable CORS
-app.use(express.json()); // Middleware to parse JSON bodies
+app.use(cors());
+app.use(express.json());
 
-app.post("/submit", (req, res) => {
-  // Set Access-Control-Allow-Origin header explicitly
-  res.setHeader("Access-Control-Allow-Origin", "http://localhost:8000"); // Replace with your client's origin
+const fetchToken = async () => {
+  const clientID = "TylerPul-ebayimpo-PRD-a983027cf-9b6b8bba"; // Replace with your eBay App ID (Client ID)
+  const clientSecret = "PRD-983027cfae51-634b-42bb-ae58-d68c"; // Replace with your eBay Cert ID (Client Secret)
+  const credentials = Buffer.from(`${clientID}:${clientSecret}`).toString(
+    "base64"
+  );
 
-  // Process the request data here, which is accessible via req.body
-  console.log("Request received durpy durpy:", req.body); // Log the request body
+  try {
+    const response = await fetch(
+      "https://api.ebay.com/identity/v1/oauth2/token",
+      {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/x-www-form-urlencoded",
+          Authorization: `Basic ${credentials}`,
+        },
+        body: "grant_type=client_credentials&scope=https%3A%2F%2Fapi.ebay.com%2Foauth%2Fapi_scope",
+      }
+    );
 
-  // Respond to the client
-  res.status(200).send("Data received");
+    if (!response.ok) throw new Error("Failed to fetch eBay OAuth token");
+
+    const data = await response.json();
+    return data.access_token;
+  } catch (error) {
+    console.error("Error fetching eBay OAuth token:", error);
+    res.status(500).send("Internal Server Error");
+  }
+};
+
+app.post("/submit", async (req, res) => {
+  const productCode = req.body.productCode;
+  const oauthToken = await fetchToken();
+  console.log(productCode);
+  try {
+    const response = await fetch(
+      `https://api.ebay.com/buy/browse/v1/item_summary/search?gtin=${productCode}`,
+      {
+        method: "GET",
+        headers: {
+          Authorization: `Bearer ${oauthToken}`,
+          "Content-Type": "application/json",
+        },
+      }
+    );
+    console.log(response);
+    if (!response.ok)
+      throw new Error("Failed to fetch data from eBay Browse API");
+
+    const data = await response.json();
+    data.itemSummaries.forEach((item) => {
+      console.log(item.price, item.condition);
+    });
+
+    res.status(200).send("Data fetched successfully");
+  } catch (error) {
+    console.error("Error fetching data from eBay Browse API:", error);
+    res.status(500).send("Internal Server Error");
+  }
+
+  // Proceed with your logic here using the token...
 });
 
 const PORT = process.env.PORT || 3000;