Comments, appointments adjustments, fixed some issues

web/lib/cartApi.js

@@ -1,5 +1,7 @@
+//Base path for all cart API calls
 const BASE = "/api/v1/cart";
 
+//Returns the standard headers needed for authenticated requests
 function authHeaders(token) {
   return {
     "Content-Type": "application/json",
@@ -7,6 +9,7 @@ function authHeaders(token) {
   };
 }
 
+//Parses the response and throws an error if the request failed
 async function handleResponse(res) {
   if (res.status === 204) return null;
   const data = await res.json();

web/lib/chatSocket.js

@@ -1,7 +1,9 @@
 import { Client } from "@stomp/stompjs";
 
+//Backend URL for the WebSocket connection, empty string means same origin
 const BACKEND_URL = process.env.NEXT_PUBLIC_BACKEND_URL || "";
 
+//Creates a STOMP client that connects to the chat WebSocket with the user's token
 export function createStompClient(token) {
   return new Client({
     webSocketFactory: () => {

web/lib/fetchAllPages.js

@@ -1,3 +1,4 @@
+//Fetches every page from a paginated API and returns all items in one array
 export async function fetchAllPages(urlBuilder) {
   const items = [];
   let page = 0;