Comments, appointments adjustments, fixed some issues

backend/src/main/resources/db/migration/V2__seed_data.sql

@@ -199,6 +199,7 @@ INSERT INTO service_species (serviceId, species) VALUES
 (1, 'Dog'),
 (1, 'Cat'),
 (1, 'Rabbit'),
+(1, 'Bird'),
 (2, 'Dog'),
 (2, 'Cat'),
 (2, 'Rabbit'),

web/app/about/page.js

@@ -1,3 +1,5 @@
+//About page
+//Three info cards covering what the store does, its focus, and how to visit
 export default function AboutPage() {
   return (
     <main className="bg-gradient-to-b from-[#f9f9f9] to-white">

web/app/adopt/[id]/page.js

@@ -7,6 +7,8 @@ import PetProfile from "@/components/PetProfile";
 
 const API_BASE = "";
 
+//Pet detail page
+//Fetches a single pet by ID and passes it to PetProfile
 export default function PetDetailPage() {
   const { id } = useParams();
   const [pet, setPet] = useState(null);

web/app/adopt/page.js

@@ -5,6 +5,8 @@ import PetCard from "@/components/PetCard";
 import { fetchAllPages } from "@/lib/fetchAllPages";
 import { useCart } from "@/context/CartContext";
 
+//Adopt page
+//Browse available pets with species/breed filters and search
 const API_BASE = "";
 const PAGE_SIZE = 10000;
 
@@ -12,6 +14,8 @@ const inputCls = "px-4 py-[0.6rem] border-2 border-[#ddd] rounded-md text-base o
 const btnPrimaryCls = "px-[1.4rem] py-[0.6rem] bg-[#e68672] text-white border-none rounded-md text-base cursor-pointer transition-colors hover:bg-[#d4705e]";
 const btnOutlineCls = "px-4 py-[0.6rem] bg-transparent text-[#666] border-2 border-[#ddd] rounded-md text-base cursor-pointer transition-all hover:border-[#aaa] hover:text-[#333]";
 
+//Pagination button
+//Highlighted when it represents the current page
 function PaginationBtn({ children, active, ...props }) {
   return (
     <button
@@ -23,6 +27,7 @@ function PaginationBtn({ children, active, ...props }) {
   );
 }
 
+//Main adopt page component
 export default function AdoptPage() {
   const { selectedStoreId } = useCart();
 
@@ -35,6 +40,7 @@ export default function AdoptPage() {
   const [selectedBreed, setSelectedBreed] = useState("");
   const [speciesOptions, setSpeciesOptions] = useState([]);
 
+  //Loads the species list from the first page of pets whenever the store changes
   useEffect(() => {
     setSelectedSpecies("");
     const params = new URLSearchParams({ page: "0", size: String(PAGE_SIZE) });
@@ -68,6 +74,7 @@ export default function AdoptPage() {
       .finally(() => setLoading(false));
   }, [query, selectedSpecies, selectedStoreId]);
 
+  //Builds the breed dropdown from the currently loaded pets
   const breedOptions = useMemo(
     () => [...new Set(pets.map((p) => p.petBreed).filter(Boolean))].sort((a, b) =>
       a.localeCompare(b, undefined, { sensitivity: "base" })
@@ -84,7 +91,10 @@ export default function AdoptPage() {
   const totalPages = Math.ceil(filteredPets.length / ITEMS_PER_PAGE);
   const displayedPets = filteredPets.slice(currentPage * ITEMS_PER_PAGE, (currentPage + 1) * ITEMS_PER_PAGE);
 
+  //Submits search form
   function handleSearch(e) { e.preventDefault(); setCurrentPage(0); setQuery(search.trim()); }
+  
+  //Resets all active filters and search text
   function handleClearFilters() { setSearch(""); setQuery(""); setSelectedSpecies(""); setSelectedBreed(""); setCurrentPage(0); }
   const hasActiveFilters = query || selectedSpecies || selectedBreed;
 

web/app/ai-chat/page.js

@@ -8,10 +8,12 @@ import { createStompClient } from "@/lib/chatSocket";
 
 const API_BASE = "";
 
+//Checks if a filename looks like an image based on its extension
 function isImageFilename(name) {
   return /\.(jpe?g|png|gif|webp|bmp|svg)$/i.test(name || "");
 }
 
+//Shows an image inline or a download link for other file types
 function AttachmentPreview({ url, name, token }) {
   const [blobUrl, setBlobUrl] = useState(null);
   const isImage = isImageFilename(name);
@@ -68,6 +70,7 @@ function AttachmentPreview({ url, name, token }) {
   );
 }
 
+//Returns true when the screen width is below 640px
 function useIsMobile() {
   const [isMobile, setIsMobile] = useState(false);
   useEffect(() => {
@@ -79,6 +82,7 @@ function useIsMobile() {
   return isMobile;
 }
 
+//AI chat page with a conversation sidebar, supports switching to a human agent and sending file attachments
 function AiChatPage() {
   const { user, token, loading: authLoading } = useAuth();
   const router = useRouter();
@@ -137,6 +141,7 @@ function AiChatPage() {
     if (nearBottom) area.scrollTop = area.scrollHeight;
   }, [botTyping]);
 
+  //Loads all messages for a conversation and scrolls to the bottom
   const fetchMessages = useCallback(async (convId) => {
     if (!token || !convId) return;
     initialLoadDoneRef.current = false;
@@ -162,6 +167,7 @@ function AiChatPage() {
     }
   }, [token]);
 
+  //Fetches a single conversation's details and stores it
   const fetchConversation = useCallback(async (convId) => {
     if (!token || !convId) return null;
     try {
@@ -194,6 +200,7 @@ function AiChatPage() {
     }
   }, [token]);
 
+  //Connects the WebSocket and subscribes to new messages and conversation updates
   const connectStomp = useCallback((convId) => {
     if (stompRef.current) {
       stompRef.current.deactivate();
@@ -301,6 +308,7 @@ function AiChatPage() {
     };
   }, [token, authLoading, conversationIdParam, fetchConversation, fetchMessages, connectStomp, fetchConversations, router]);
 
+  //Decides whether to send a text message or an attachment
   async function handleSend(e) {
     e?.preventDefault();
     const text = input.trim();
@@ -312,6 +320,7 @@ function AiChatPage() {
     }
   }
 
+  //Sends a plain text message and shows a bot typing indicator
   async function handleSendText(text) {
     setInput("");
     setSending(true);
@@ -356,6 +365,7 @@ function AiChatPage() {
     }
   }
 
+  //Uploads a file as an attachment, with an optional caption
   async function handleSendAttachment(optionalText) {
     setSending(true);
     setError(null);
@@ -416,6 +426,7 @@ function AiChatPage() {
     }
   }
 
+  //Creates a new AI conversation and navigates to it
   async function handleNewConversation() {
     if (stompRef.current) { stompRef.current.deactivate(); stompRef.current = null; }
     setError(null);
@@ -455,6 +466,7 @@ function AiChatPage() {
     router.replace(`/ai-chat?id=${convId}`, { scroll: false });
   }
 
+  //Requests a human agent for the current conversation
   async function handleSwitchToHuman() {
     if (!conversation) return;
     try {
@@ -468,6 +480,7 @@ function AiChatPage() {
     }
   }
 
+  //Closes the current conversation so no more messages can be sent
   async function handleCloseConversation() {
     if (!conversation || conversation.status === "CLOSED") return;
     try {

web/app/api/[...path]/route.js

@@ -1,5 +1,7 @@
+//Backend URL, falls back to localhost for local development
 const BACKEND = process.env.BACKEND_URL || 'http://localhost:8080'
 
+//Forwards all incoming requests to the backend, preserving method, headers, and body
 async function proxy(request, { params }) {
   const path = (await params).path.join('/')
   const { search } = new URL(request.url)
@@ -10,6 +12,8 @@ async function proxy(request, { params }) {
   headers.delete('origin')
 
   const init = { method: request.method, headers }
+  
+  //Only attach a body for requests that can have one
   if (!['GET', 'HEAD'].includes(request.method)) {
     init.body = request.body
     init.duplex = 'half'

web/app/appointments/page.js

@@ -20,13 +20,31 @@ const SPECIES_BREEDS = {
   Other: ["Other"],
 };
 
+//Services that only apply to specific species, keyed by species name
 const SPECIES_EXCLUSIVE_SERVICES = {
   Bird: ["wing clipping", "beak and nail"],
   Fish: ["aquarium health"],
 };
 
+//Services that are banned for specific species, keyed by species name
+const SPECIES_BANNED_SERVICES = {
+  Bird: ["teeth cleaning"],
+};
+
+//Filters out services that are exclusive to a different species, or banned for the selected species.
+//When species is unknown, hides all species-exclusive and banned services to avoid invalid options appearing.
 function getAvailableServices(services, species) {
-  if (!species) return services;
+  const exclusiveKeywords = Object.values(SPECIES_EXCLUSIVE_SERVICES).flat();
+  const allBannedKeywords = Object.values(SPECIES_BANNED_SERVICES).flat();
+
+  if (!species) {
+    return services.filter((s) => {
+      const name = s.serviceName.toLowerCase();
+      return !exclusiveKeywords.some((kw) => name.includes(kw)) &&
+             !allBannedKeywords.some((kw) => name.includes(kw));
+    });
+  }
+
   return services.filter((s) => {
     const name = s.serviceName.toLowerCase();
     for (const [exclusiveSpecies, keywords] of Object.entries(SPECIES_EXCLUSIVE_SERVICES)) {
@@ -34,6 +52,10 @@ function getAvailableServices(services, species) {
         return false;
       }
     }
+    const banned = SPECIES_BANNED_SERVICES[species] ?? [];
+    if (banned.some((kw) => name.includes(kw))) {
+      return false;
+    }
     return true;
   });
 }
@@ -41,6 +63,7 @@ function getAvailableServices(services, species) {
 const DAYS = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
 const MONTHS = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
 
+//Custom calendar date picker that prevents selecting dates in the past
 function DatePicker({ value, minDate, onChange }) {
   const today = new Date();
   today.setHours(0, 0, 0, 0);
@@ -137,6 +160,7 @@ const errorCls = "bg-[#fff0f0] border border-[#f5c6c6] text-[#c0392b] rounded-lg
 const successCls = "bg-[#f0fdf4] border border-[#bbf7d0] text-[#16a34a] rounded-lg px-4 py-3 text-[0.9rem]";
 const submitBtnCls = "py-3 bg-[#e68672] text-white border-none rounded-lg text-base font-bold cursor-pointer transition-all hover:bg-[#d4705e] active:scale-[0.98] disabled:opacity-60 disabled:cursor-not-allowed";
 
+//Modal dialog for quickly adding a new pet without leaving the appointments page
 function AddPetModal({ token, onClose, onAdded }) {
   const [petName, setPetName] = useState("");
   const [species, setSpecies] = useState("");
@@ -219,6 +243,7 @@ function AddPetModal({ token, onClose, onAdded }) {
   );
 }
 
+//Appointments page - book a service or adoption, and view past and active appointments
 function AppointmentsPage() {
   const { user, token, loading: authLoading } = useAuth();
   const router = useRouter();
@@ -279,6 +304,18 @@ function AppointmentsPage() {
   const [showPastAppts, setShowPastAppts] = useState(false);
   const [showPastAdoptions, setShowPastAdoptions] = useState(false);
 
+  //Pagination state for each of the four history lists
+  const HISTORY_PAGE_SIZE = 5;
+  const [apptPage, setApptPage] = useState(0);
+  const [pastApptPage, setPastApptPage] = useState(0);
+  const [adoptionPage, setAdoptionPage] = useState(0);
+  const [pastAdoptionPage, setPastAdoptionPage] = useState(0);
+
+  //Reset appointment page to 0 when the search text changes
+  useEffect(() => { setApptPage(0); }, [apptSearch]);
+  //Reset adoption page to 0 when the search text changes
+  useEffect(() => { setAdoptionPage(0); }, [adoptionSearch]);
+
   const canBookAppointments = user?.role === "CUSTOMER" || user?.role === "ADMIN";
 
   useEffect(() => {
@@ -309,6 +346,7 @@ function AppointmentsPage() {
       .finally(() => setAdoptionVerifyLoading(false));
   }, [adoptionMode, adoptionPetId, adoptionStoreId]);
 
+  //Loads the user's registered pets for the pet selector
   const loadCustomerPets = useCallback(() => {
     if (!token || !canBookAppointments) return;
     fetch(`${API_BASE}/api/v1/my-pets`, {
@@ -369,6 +407,7 @@ function AppointmentsPage() {
     didPreselectRef.current = true;
   }, [adoptionMode, adoptionStoreId, preselectedPetId, services, allPets]);
 
+  //Fetches the user's booked appointments
   const loadAppointments = useCallback(() => {
     if (!token) return;
     setLoadingAppointments(true);
@@ -381,6 +420,7 @@ function AppointmentsPage() {
       .finally(() => setLoadingAppointments(false));
   }, [token]);
 
+  //Fetches the user's adoption requests
   const loadAdoptions = useCallback(() => {
     if (!token) return;
     setLoadingAdoptions(true);
@@ -398,6 +438,7 @@ function AppointmentsPage() {
     loadAdoptions();
   }, [loadAppointments, loadAdoptions]);
 
+  //Cancels an appointment after asking the user to confirm
   async function handleCancelAppointment(appointmentId) {
     if (!confirm("Cancel this appointment?")) return;
     setCancellingId(appointmentId);
@@ -418,6 +459,7 @@ function AppointmentsPage() {
     }
   }
 
+  //Cancels an adoption request after asking the user to confirm
   async function handleCancelAdoption(adoptionId) {
     if (!confirm("Cancel this adoption request?")) return;
     setCancellingId(adoptionId);
@@ -494,6 +536,7 @@ function AppointmentsPage() {
     setServiceId(newServiceId);
   }
 
+  //Selects a pet and clears the chosen service if it is not valid for that species
   function handlePetSelect(petId) {
     const newPet = eligiblePets.find((p) => p.customerPetId === petId);
     setSelectedPetIds([petId]);
@@ -507,6 +550,7 @@ function AppointmentsPage() {
     }
   }
 
+  //Converts a 24-hour time string to 12-hour AM/PM format
   function formatTime(timeStr) {
     const [h, m] = timeStr.split(":");
     const hour = parseInt(h, 10);
@@ -524,6 +568,7 @@ function AppointmentsPage() {
     ? Boolean(employeeId && appointmentDate && adoptionVerified)
     : storeId && serviceId && appointmentDate && appointmentTime && selectedPetIds.length > 0;
 
+  //Submits either a new appointment or an adoption request depending on the current mode
   async function handleSubmit(e) {
     e.preventDefault();
     setError(null);
@@ -749,7 +794,7 @@ function AppointmentsPage() {
                     <option value="">Select a service...</option>
                     {availableServices.map((s) => (
                       <option key={s.serviceId} value={s.serviceId}>
-                        {s.serviceName} — ${Number(s.servicePrice).toFixed(2)} ({s.serviceDuration} min)
+                        {s.serviceName} - ${Number(s.servicePrice).toFixed(2)} ({s.serviceDuration} min)
                       </option>
                     ))}
                   </select>
@@ -834,6 +879,12 @@ function AppointmentsPage() {
             const filteredActive = activeAppts.filter((a) =>
               !q || [a.serviceName, a.storeName, a.petName].some((v) => v?.toLowerCase().includes(q))
             );
+            //Paginate active appointments
+            const apptTotalPages = Math.ceil(filteredActive.length / HISTORY_PAGE_SIZE);
+            const apptSlice = filteredActive.slice(apptPage * HISTORY_PAGE_SIZE, (apptPage + 1) * HISTORY_PAGE_SIZE);
+            //Paginate past appointments
+            const pastApptTotalPages = Math.ceil(pastAppts.length / HISTORY_PAGE_SIZE);
+            const pastApptSlice = pastAppts.slice(pastApptPage * HISTORY_PAGE_SIZE, (pastApptPage + 1) * HISTORY_PAGE_SIZE);
             return (
               <>
                 <input
@@ -846,8 +897,9 @@ function AppointmentsPage() {
                 {filteredActive.length === 0 ? (
                   <p className="text-[#888] text-[0.9rem] py-4 m-0">{activeAppts.length === 0 ? "No active appointments." : "No results."}</p>
                 ) : (
+                  <>
                     <div className="flex flex-col gap-3">
-                    {filteredActive.map((a) => (
+                      {apptSlice.map((a) => (
                         <div key={a.appointmentId} className="bg-[#f9f9f9] rounded-xl p-4 border border-[#eee]">
                           <div className="flex items-center justify-between mb-2">
                             <span className="font-semibold text-[#333]">{a.serviceName}</span>
@@ -875,15 +927,38 @@ function AppointmentsPage() {
                         </div>
                       ))}
                     </div>
+                    {apptTotalPages > 1 && (
+                      <div className="flex items-center justify-between gap-2 mt-1 flex-wrap">
+                        <button
+                          className="px-3 py-1.5 rounded-lg border border-[#ddd] bg-white text-[0.85rem] cursor-pointer hover:border-[#e68672] transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+                          onClick={() => setApptPage((p) => p - 1)}
+                          disabled={apptPage === 0}
+                          type="button"
+                        >
+                          &larr; Prev
+                        </button>
+                        <span className="text-[0.82rem] text-[#888]">Page {apptPage + 1} of {apptTotalPages}</span>
+                        <button
+                          className="px-3 py-1.5 rounded-lg border border-[#ddd] bg-white text-[0.85rem] cursor-pointer hover:border-[#e68672] transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+                          onClick={() => setApptPage((p) => p + 1)}
+                          disabled={apptPage >= apptTotalPages - 1}
+                          type="button"
+                        >
+                          Next &rarr;
+                        </button>
+                      </div>
+                    )}
+                  </>
                 )}
                 {pastAppts.length > 0 && (
                   <div className="mt-2">
-                    <button className="text-[0.85rem] text-[#e68672] cursor-pointer bg-transparent border-none font-semibold hover:underline" onClick={() => setShowPastAppts((v) => !v)}>
+                    <button className="text-[0.85rem] text-[#e68672] cursor-pointer bg-transparent border-none font-semibold hover:underline" onClick={() => { setShowPastAppts((v) => !v); setPastApptPage(0); }}>
                       {showPastAppts ? "Hide" : "Show"} past appointments ({pastAppts.length})
                     </button>
                     {showPastAppts && (
+                      <>
                         <div className="flex flex-col gap-3 mt-3 opacity-75">
-                        {pastAppts.map((a) => (
+                          {pastApptSlice.map((a) => (
                             <div key={a.appointmentId} className="bg-[#f9f9f9] rounded-xl p-4 border border-[#eee]">
                               <div className="flex items-center justify-between mb-2">
                                 <span className="font-semibold text-[#333]">{a.serviceName}</span>
@@ -901,6 +976,28 @@ function AppointmentsPage() {
                             </div>
                           ))}
                         </div>
+                        {pastApptTotalPages > 1 && (
+                          <div className="flex items-center justify-between gap-2 mt-2 flex-wrap">
+                            <button
+                              className="px-3 py-1.5 rounded-lg border border-[#ddd] bg-white text-[0.85rem] cursor-pointer hover:border-[#e68672] transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+                              onClick={() => setPastApptPage((p) => p - 1)}
+                              disabled={pastApptPage === 0}
+                              type="button"
+                            >
+                              &larr; Prev
+                            </button>
+                            <span className="text-[0.82rem] text-[#888]">Page {pastApptPage + 1} of {pastApptTotalPages}</span>
+                            <button
+                              className="px-3 py-1.5 rounded-lg border border-[#ddd] bg-white text-[0.85rem] cursor-pointer hover:border-[#e68672] transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+                              onClick={() => setPastApptPage((p) => p + 1)}
+                              disabled={pastApptPage >= pastApptTotalPages - 1}
+                              type="button"
+                            >
+                              Next &rarr;
+                            </button>
+                          </div>
+                        )}
+                      </>
                     )}
                   </div>
                 )}
@@ -918,6 +1015,12 @@ function AppointmentsPage() {
             const filteredActive = activeAdoptions.filter((a) =>
               !q || [a.petName, a.sourceStoreName].some((v) => v?.toLowerCase().includes(q))
             );
+            //Paginate active adoptions
+            const adoptionTotalPages = Math.ceil(filteredActive.length / HISTORY_PAGE_SIZE);
+            const adoptionSlice = filteredActive.slice(adoptionPage * HISTORY_PAGE_SIZE, (adoptionPage + 1) * HISTORY_PAGE_SIZE);
+            //Paginate past adoptions
+            const pastAdoptionTotalPages = Math.ceil(pastAdoptions.length / HISTORY_PAGE_SIZE);
+            const pastAdoptionSlice = pastAdoptions.slice(pastAdoptionPage * HISTORY_PAGE_SIZE, (pastAdoptionPage + 1) * HISTORY_PAGE_SIZE);
             return (
               <>
                 <input
@@ -930,8 +1033,9 @@ function AppointmentsPage() {
                 {filteredActive.length === 0 ? (
                   <p className="text-[#888] text-[0.9rem] py-4 m-0">{activeAdoptions.length === 0 ? "No active adoption requests." : "No results."}</p>
                 ) : (
+                  <>
                     <div className="flex flex-col gap-3">
-                    {filteredActive.map((a) => (
+                      {adoptionSlice.map((a) => (
                         <div key={a.adoptionId} className="bg-[#f9f9f9] rounded-xl p-4 border border-[#eee]">
                           <div className="flex items-center justify-between mb-2">
                             <span className="font-semibold text-[#333]">{a.petName}</span>
@@ -956,15 +1060,38 @@ function AppointmentsPage() {
                         </div>
                       ))}
                     </div>
+                    {adoptionTotalPages > 1 && (
+                      <div className="flex items-center justify-between gap-2 mt-1 flex-wrap">
+                        <button
+                          className="px-3 py-1.5 rounded-lg border border-[#ddd] bg-white text-[0.85rem] cursor-pointer hover:border-[#e68672] transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+                          onClick={() => setAdoptionPage((p) => p - 1)}
+                          disabled={adoptionPage === 0}
+                          type="button"
+                        >
+                          &larr; Prev
+                        </button>
+                        <span className="text-[0.82rem] text-[#888]">Page {adoptionPage + 1} of {adoptionTotalPages}</span>
+                        <button
+                          className="px-3 py-1.5 rounded-lg border border-[#ddd] bg-white text-[0.85rem] cursor-pointer hover:border-[#e68672] transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+                          onClick={() => setAdoptionPage((p) => p + 1)}
+                          disabled={adoptionPage >= adoptionTotalPages - 1}
+                          type="button"
+                        >
+                          Next &rarr;
+                        </button>
+                      </div>
+                    )}
+                  </>
                 )}
                 {pastAdoptions.length > 0 && (
                   <div className="mt-2">
-                    <button className="text-[0.85rem] text-[#e68672] cursor-pointer bg-transparent border-none font-semibold hover:underline" onClick={() => setShowPastAdoptions((v) => !v)}>
+                    <button className="text-[0.85rem] text-[#e68672] cursor-pointer bg-transparent border-none font-semibold hover:underline" onClick={() => { setShowPastAdoptions((v) => !v); setPastAdoptionPage(0); }}>
                       {showPastAdoptions ? "Hide" : "Show"} past adoptions ({pastAdoptions.length})
                     </button>
                     {showPastAdoptions && (
+                      <>
                         <div className="flex flex-col gap-3 mt-3 opacity-75">
-                        {pastAdoptions.map((a) => (
+                          {pastAdoptionSlice.map((a) => (
                             <div key={a.adoptionId} className="bg-[#f9f9f9] rounded-xl p-4 border border-[#eee]">
                               <div className="flex items-center justify-between mb-2">
                                 <span className="font-semibold text-[#333]">{a.petName}</span>
@@ -979,6 +1106,28 @@ function AppointmentsPage() {
                             </div>
                           ))}
                         </div>
+                        {pastAdoptionTotalPages > 1 && (
+                          <div className="flex items-center justify-between gap-2 mt-2 flex-wrap">
+                            <button
+                              className="px-3 py-1.5 rounded-lg border border-[#ddd] bg-white text-[0.85rem] cursor-pointer hover:border-[#e68672] transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+                              onClick={() => setPastAdoptionPage((p) => p - 1)}
+                              disabled={pastAdoptionPage === 0}
+                              type="button"
+                            >
+                              &larr; Prev
+                            </button>
+                            <span className="text-[0.82rem] text-[#888]">Page {pastAdoptionPage + 1} of {pastAdoptionTotalPages}</span>
+                            <button
+                              className="px-3 py-1.5 rounded-lg border border-[#ddd] bg-white text-[0.85rem] cursor-pointer hover:border-[#e68672] transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+                              onClick={() => setPastAdoptionPage((p) => p + 1)}
+                              disabled={pastAdoptionPage >= pastAdoptionTotalPages - 1}
+                              type="button"
+                            >
+                              Next &rarr;
+                            </button>
+                          </div>
+                        )}
+                      </>
                     )}
                   </div>
                 )}

web/app/cart/page.js

@@ -13,8 +13,10 @@ import {
 } from "@stripe/react-stripe-js";
 import { apiCompleteCheckout } from "@/lib/cartApi";
 
+//Initializes Stripe with the publishable key
 const stripePromise = loadStripe(process.env.NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY || "");
 
+//Stripe payment form shown after the user clicks checkout
 function PaymentForm({ clientSecret, totalAmount, onSuccess, onCancel }) {
   const stripe = useStripe();
   const elements = useElements();
@@ -22,6 +24,7 @@ function PaymentForm({ clientSecret, totalAmount, onSuccess, onCancel }) {
   const [paying, setPaying] = useState(false);
   const [payError, setPayError] = useState(null);
 
+  //Confirms the payment with Stripe, then tells the backend to complete the order
   async function handlePay(e) {
     e.preventDefault();
     if (!stripe || !elements) return;
@@ -57,9 +60,6 @@ function PaymentForm({ clientSecret, totalAmount, onSuccess, onCancel }) {
       <p className="text-[0.95rem] text-[#555] m-0">
         Total to pay: <strong>${parseFloat(totalAmount).toFixed(2)}</strong>
       </p>
-      <div className="bg-[#fffbeb] border border-[#fde68a] rounded-lg px-4 py-3 text-[0.82rem] text-[#854d0e] flex flex-col gap-1">
-        <div><strong>Demo mode</strong> — no real charge. Use test card: <span className="font-mono font-bold">4242 4242 4242 4242</span> · any future date · any 3-digit CVC</div>
-      </div>
       <PaymentElement />
       {payError && <p className="bg-[#fff0f0] border border-[#f5c6c6] text-[#c0392b] rounded-lg px-4 py-3 text-[0.9rem] m-0">{payError}</p>}
       <div className="flex gap-3 mt-2">
@@ -79,6 +79,7 @@ function PaymentForm({ clientSecret, totalAmount, onSuccess, onCancel }) {
   );
 }
 
+//Cart page - shows items, coupons, loyalty points, order summary, and checkout
 export default function CartPage() {
   const { user, loading: authLoading, refreshUser } = useAuth();
   const {
@@ -114,12 +115,14 @@ export default function CartPage() {
 
   const [localQuantities, setLocalQuantities] = useState({});
 
+  //Redirect unauthenticated users to login
   useEffect(() => {
     if (!authLoading && !user) {
       router.push("/login");
     }
   }, [authLoading, user, router]);
 
+  //Sync local quantity inputs whenever the cart updates from the server
   useEffect(() => {
     if (cart?.items) {
       const map = {};
@@ -129,12 +132,14 @@ export default function CartPage() {
     setOptimisticPointsApplied(null);
   }, [cart]);
 
+  //Cancel any leftover pending checkout if the page loads without a client secret
   useEffect(() => {
     if (cart?.checkoutPending && !clientSecret) {
       cancelCheckout().catch(() => {});
     }
   }, [cart?.checkoutPending, clientSecret, cancelCheckout]);
 
+  //Updates item quantity and rolls back the change if the request fails
   async function handleQuantityChange(cartItemId, newQty) {
     if (newQty < 1) return;
     setLocalQuantities((prev) => ({ ...prev, [cartItemId]: newQty }));
@@ -158,6 +163,7 @@ export default function CartPage() {
     catch {}
   }
 
+  //Applies the typed coupon code and shows the discount type and amount
   async function handleApplyCoupon() {
     if (!couponInput.trim()) return;
     setCouponLoading(true);
@@ -212,6 +218,8 @@ export default function CartPage() {
     }
   }
 
+  //Starts checkout
+  //Either gets a Stripe client secret for payment or marks the order complete directly
   async function handleCheckout() {
     if (!cart?.items?.length) return;
     setCheckoutLoading(true);
@@ -497,7 +505,7 @@ export default function CartPage() {
             )}
 
             {clientSecret && (
-              <Elements stripe={stripePromise} options={{ clientSecret }}>
+              <Elements stripe={stripePromise} options={{ clientSecret, wallets: { link: "never" } }}>
                 <PaymentForm
                   clientSecret={clientSecret}
                   totalAmount={checkoutTotal ?? cart.totalAmount}

web/app/chat/page.js

@@ -8,10 +8,12 @@ import { createStompClient } from "@/lib/chatSocket";
 
 const API_BASE = "";
 
+//Checks if a filename looks like an image based on its extension
 function isImageFilename(name) {
   return /\.(jpe?g|png|gif|webp|bmp|svg)$/i.test(name || "");
 }
 
+//Shows an image inline or a download link for other file types
 function AttachmentPreview({ url, name, token }) {
   const [blobUrl, setBlobUrl] = useState(null);
   const isImage = isImageFilename(name);
@@ -68,6 +70,7 @@ function AttachmentPreview({ url, name, token }) {
   );
 }
 
+//Live support chat page with a conversation sidebar and real-time messaging via WebSocket
 function ChatPage() {
   const { user, token, loading: authLoading } = useAuth();
   const router = useRouter();
@@ -113,6 +116,7 @@ function ChatPage() {
     if (nearBottom) area.scrollTop = area.scrollHeight;
   }, [messages]);
 
+  //Loads all messages for a conversation and scrolls to the bottom
   const fetchMessages = useCallback(async (convId) => {
     if (!token || !convId) return;
     initialLoadDoneRef.current = false;
@@ -145,6 +149,7 @@ function ChatPage() {
     }
   }, [token]);
 
+  //Fetches a single conversation's details and stores it in state
   const fetchConversation = useCallback(async (convId) => {
     if (!token || !convId) return null;
     try {
@@ -183,6 +188,7 @@ function ChatPage() {
     }
   }, [token]);
 
+  //Connects the WebSocket and subscribes to new messages and conversation updates
   const connectStomp = useCallback((convId) => {
     if (stompRef.current) {
       stompRef.current.deactivate();
@@ -268,6 +274,7 @@ function ChatPage() {
     };
   }, [token, authLoading, conversationIdParam, fetchConversation, fetchMessages, connectStomp, fetchConversations]);
 
+  //Decides whether to send a text message or an attachment
   async function handleSend(e) {
     e?.preventDefault();
     const text = input.trim();
@@ -279,6 +286,7 @@ function ChatPage() {
     }
   }
 
+  //Sends a plain text message to the support agent
   async function handleSendText(text) {
     setInput("");
     setSending(true);
@@ -321,6 +329,7 @@ function ChatPage() {
     }
   }
 
+  //Uploads a file as an attachment, with an optional caption
   async function handleSendAttachment(optionalText) {
     setSending(true);
     setError(null);
@@ -381,6 +390,7 @@ function ChatPage() {
     }
   }
 
+  //Creates a new live support conversation and requests a human agent straight away
   async function handleNewConversation() {
     setError(null);
     setLoadingConv(true);
@@ -425,6 +435,7 @@ function ChatPage() {
     router.replace(`/chat?id=${convId}`, { scroll: false });
   }
 
+  //Closes the current conversation so no more messages can be sent
   async function handleCloseConversation() {
     if (!conversation || conversation.status === "CLOSED") return;
     try {

web/app/contact/page.js

@@ -7,6 +7,7 @@ const labelCls = "flex flex-col gap-[0.35rem] text-[0.9rem] font-semibold text-[
 const inputCls = "px-[0.85rem] py-[0.6rem] border border-[#ddd] rounded-lg text-base outline-none transition-all focus:border-[#e68672] focus:shadow-[0_0_0_3px_rgba(230,134,114,0.2)]";
 const submitBtnCls = "mt-2 py-3 bg-[#e68672] text-white border-none rounded-lg text-base font-bold cursor-pointer transition-all hover:bg-[#d4705e] active:scale-[0.98] disabled:opacity-60 disabled:cursor-not-allowed";
 
+//Returns the image path for a store, guessing from the store name if no image is set
 function getStoreImage(store) {
   if (store.imageUrl) return store.imageUrl;
   const name = store.storeName?.toLowerCase() ?? "";
@@ -16,6 +17,7 @@ function getStoreImage(store) {
   return "/images/pet-placeholder.png";
 }
 
+//Contact page with a message form on the left and store location cards on the right
 export default function ContactPage() {
   const { token } = useAuth();
   const [locations, setLocations] = useState([]);
@@ -28,6 +30,7 @@ export default function ContactPage() {
   const [sendError, setSendError] = useState(null);
   const [sendSuccess, setSendSuccess] = useState(false);
 
+  //Loads all store locations when the page first opens
   useEffect(() => {
     const params = new URLSearchParams({ page: "0", size: "100", sort: "storeName,asc" });
     fetch(`/api/v1/stores?${params}`)
@@ -40,6 +43,7 @@ export default function ContactPage() {
       .finally(() => setLoading(false));
   }, []);
 
+  //Submits the contact form to the backend
   async function handleSend(e) {
     e.preventDefault();
     if (!token) {

web/app/forgot-password/page.js

@@ -8,6 +8,7 @@ const labelCls = "flex flex-col gap-[0.35rem] text-[0.9rem] font-semibold text-[
 const inputCls = "px-[0.85rem] py-[0.6rem] border border-[#ddd] rounded-lg text-base outline-none transition-all focus:border-[#e68672] focus:shadow-[0_0_0_3px_rgba(230,134,114,0.2)]";
 const submitBtnCls = "mt-2 py-3 bg-[#e68672] text-white border-none rounded-lg text-base font-bold cursor-pointer transition-all hover:bg-[#d4705e] active:scale-[0.98] disabled:opacity-60 disabled:cursor-not-allowed";
 
+//Forgot password page, sends a reset link to the user's email
 function ForgotPasswordPage() {
   const [usernameOrEmail, setUsernameOrEmail] = useState("");
   const [message, setMessage] = useState("");
@@ -15,6 +16,7 @@ function ForgotPasswordPage() {
   const [loading, setLoading] = useState(false);
   const [submitted, setSubmitted] = useState(false);
 
+  //Sends the forgot password request and hides the form on success
   async function handleSubmit(e) {
     e.preventDefault();
     setError("");

web/app/layout.js

@@ -4,11 +4,14 @@ import DisplayNav from "@/components/Navigation";
 import Footer from "@/components/Footer";
 import ClientProviders from "@/components/ClientProviders";
 
+//Page title and description
 export const metadata = {
   title: "Leon's Pet Store",
   description: "Generated by create next app",
 };
 
+//Root layout
+//Wraps every page with the nav, footer, and all context providers
 export default function RootLayout({children}) {
   return (
     <html lang="en">

web/app/login/page.js

@@ -10,12 +10,15 @@ const labelCls = "flex flex-col gap-[0.35rem] text-[0.9rem] font-semibold text-[
 const inputCls = "px-[0.85rem] py-[0.6rem] border border-[#ddd] rounded-lg text-base outline-none transition-all focus:border-[#e68672] focus:shadow-[0_0_0_3px_rgba(230,134,114,0.2)]";
 const submitBtnCls = "mt-2 py-3 bg-[#e68672] text-white border-none rounded-lg text-base font-bold cursor-pointer transition-all hover:bg-[#d4705e] active:scale-[0.98] disabled:opacity-60 disabled:cursor-not-allowed";
 
+//Returns the redirect path after login, blocking open redirects to external or auth pages
 function resolveNextPath(candidate) {
   if (!candidate || !candidate.startsWith("/")) return "/";
   if (candidate.startsWith("//") || candidate.startsWith("/login") || candidate.startsWith("/register")) return "/";
   return candidate;
 }
 
+//Login page
+//Username and password form, redirects to the page the user was trying to visit
 function LoginPage() {
   const {login} = useAuth();
   const router = useRouter();
@@ -26,6 +29,7 @@ function LoginPage() {
   const [error, setError] = useState("");
   const [loading, setLoading] = useState(false);
 
+  //Submits the login form and redirects on success
   async function handleSubmit(e) {
     e.preventDefault();
     setError("");

web/app/page.js

@@ -4,6 +4,7 @@ import Image from "next/image";
 import Link from "next/link";
 import { useState, useEffect } from "react";
 
+//Images used in the auto-scrolling slideshow at the top of the home page
 const slideshowImages = [
   {id: "slide-1", src: "/images/home/slideshow/pet1.jpg", alt: "Happy pets"},
   {id: "slide-2", src: "/images/home/slideshow/pet2.jpg", alt: "Pet supplies"},
@@ -11,15 +12,18 @@ const slideshowImages = [
   {id: "slide-4", src: "/images/home/slideshow/pet4.jpg", alt: "Pet food"},
 ];
 
+//Image cards linking to the three main sections of the site
 const navImages = [
   {id: "nav-adopt", src: "/images/home/navimages/adopt.jpg", alt: "Adopt a Pet", link: "/adopt", title: "Adopt a Pet"},
   {id: "nav-products", src: "/images/home/navimages/store.jpg", alt: "Online Store", link: "/products", title: "Online Store"},
   {id: "nav-appointments", src: "/images/home/navimages/appointments.jpg", alt: "Appointments", link: "/appointments", title: "Appointments"},
 ];
 
+//Home page - slideshow, nav image links, and about us section
 export default function Home() {
   const [currentSlide, setCurrentSlide] = useState(0);
 
+  //Advances the slideshow every 7.5 seconds
   useEffect(() => {
     const timer = setInterval(() => { setCurrentSlide((prev) => (prev + 1) % slideshowImages.length); }, 7500);
     return () => clearInterval(timer);

web/app/products/[id]/page.js

@@ -7,6 +7,7 @@ import ProductProfile from "@/components/ProductProfile";
 
 const API_BASE = "";
 
+//Product detail page, fetches a single product by ID and passes it to ProductProfile
 export default function ProductDetailPage() {
   const { id } = useParams();
   const [product, setProduct] = useState(null);

web/app/products/page.js

@@ -4,6 +4,8 @@ import { useState, useEffect } from "react";
 import ProductCard from "@/components/ProductCard";
 import { fetchAllPages } from "@/lib/fetchAllPages";
 
+//Products page
+//Searchable grid of all store products with pagination
 const API_BASE = "";
 
 export default function ProductsPage() {
@@ -34,6 +36,7 @@ export default function ProductsPage() {
   const totalPages = Math.ceil(products.length / ITEMS_PER_PAGE);
   const displayedProducts = products.slice(currentPage * ITEMS_PER_PAGE, (currentPage + 1) * ITEMS_PER_PAGE);
 
+  //Submits the search form
   function handleSearch(e) {
     e.preventDefault();
     setLoading(true);

web/app/profile/page.js

@@ -6,6 +6,7 @@ import { useAuth } from "@/context/AuthContext";
 
 const API_BASE = "";
 
+//Species and breed options for the add/edit pet form
 const SPECIES_BREEDS = {
   Dog: ["Beagle", "Boxer", "Bulldog", "Chihuahua", "Dachshund", "German Shepherd", "Golden Retriever", "Labrador Retriever", "Poodle", "Rottweiler", "Shih Tzu", "Siberian Husky", "Yorkshire Terrier", "Mixed / Other"],
   Cat: ["Abyssinian", "Bengal", "British Shorthair", "Maine Coon", "Persian", "Ragdoll", "Scottish Fold", "Siamese", "Sphynx", "Mixed / Other"],
@@ -19,12 +20,13 @@ const SPECIES_BREEDS = {
 };
 
 const labelCls = "flex flex-col gap-[0.35rem] text-[0.9rem] font-semibold text-[#444]";
-const inputCls = "px-[0.85rem] py-[0.6rem] border border-[#ddd] rounded-lg text-base outline-none transition-all focus:border-[#e68672] focus:shadow-[0_0_0_3px_rgba(230,134,114,0.2)]";
+const inputCls = "px-[0.85rem] py-[0.6rem] bg-white border border-[#ddd] rounded-lg text-base outline-none transition-all focus:border-[#e68672] focus:shadow-[0_0_0_3px_rgba(230,134,114,0.2)]";
 const selectCls = `custom-select ${inputCls} bg-white cursor-pointer`;
 const errorCls = "bg-[#fff0f0] border border-[#f5c6c6] text-[#c0392b] rounded-lg px-4 py-3 text-[0.9rem]";
 const successCls = "bg-[#f0fdf4] border border-[#bbf7d0] text-[#16a34a] rounded-lg px-4 py-3 text-[0.9rem]";
 const submitBtnCls = "py-3 bg-[#e68672] text-white border-none rounded-lg text-base font-bold cursor-pointer transition-all hover:bg-[#d4705e] active:scale-[0.98] disabled:opacity-60 disabled:cursor-not-allowed";
 
+//Profile page - shows user info, edit form, avatar upload, owned pets, and order history
 export default function ProfilePage() {
   const {user, token, loading, logout, refreshUser} = useAuth();
   const router = useRouter();
@@ -49,6 +51,7 @@ export default function ProfilePage() {
   const [profileSuccess, setProfileSuccess] = useState(null);
   const [avatarSubmitting, setAvatarSubmitting] = useState(false);
 
+  //Revokes all blob URLs created for pet images to free up memory
   const clearPetImageObjectUrls = useCallback(() => {
     for (const objectUrl of petImageObjectUrlsRef.current) {
       URL.revokeObjectURL(objectUrl);
@@ -73,6 +76,7 @@ export default function ProfilePage() {
     });
   }, [user]);
 
+  //Fetches the user's owned pets and resolves their images into blob URLs
   const loadPets = useCallback(async () => {
     if (!token) return;
     setLoadingPets(true);
@@ -128,6 +132,7 @@ export default function ProfilePage() {
     };
   }, [clearPetImageObjectUrls]);
 
+  //Fetches the user's recent order history
   const loadOrders = useCallback(async () => {
     if (!token) return;
     setLoadingOrders(true);
@@ -176,11 +181,13 @@ export default function ProfilePage() {
     };
   }, [user?.avatarUrl, token]);
 
+  //Logs out and sends the user to the home page
   function handleLogout() {
     logout();
     router.push("/");
   }
 
+  //Saves changes to the user's name, email, phone, or password
   async function handleProfileSubmit(e) {
     e.preventDefault();
     setProfileError(null);
@@ -232,6 +239,7 @@ export default function ProfilePage() {
     }
   }
 
+  //Uploads a new avatar image for the user
   async function handleAvatarUpload(file) {
     if (!file) return;
 
@@ -266,6 +274,7 @@ export default function ProfilePage() {
     }
   }
 
+  //Removes the user's avatar
   async function handleAvatarDelete() {
     setAvatarSubmitting(true);
     setProfileError(null);
@@ -295,6 +304,7 @@ export default function ProfilePage() {
     }
   }
 
+  //Opens the add pet form with blank fields
   function openAddForm() {
     setEditingPet(null);
     setPetName("");
@@ -305,6 +315,7 @@ export default function ProfilePage() {
     setShowForm(true);
   }
 
+  //Opens the edit pet form pre-filled with the selected pet's details
   function openEditForm(pet) {
     setEditingPet(pet);
     setPetName(pet.petName);
@@ -321,6 +332,7 @@ export default function ProfilePage() {
     setPetError(null);
   }
 
+  //Creates a new pet or saves edits to an existing one
   async function handlePetSubmit(e) {
     e.preventDefault();
     setPetError(null);
@@ -358,6 +370,7 @@ export default function ProfilePage() {
     }
   }
 
+  //Confirms with the user then removes the pet profile
   async function handleDeletePet(id) {
     if (!confirm("Remove this pet profile?")) return;
 
@@ -378,6 +391,7 @@ export default function ProfilePage() {
     }
   }
 
+  //Uploads a photo for a specific pet profile
   async function handleImageUpload(petId, file) {
     const formData = new FormData();
     formData.append("image", file);

web/app/register/page.js

@@ -20,6 +20,8 @@ function resolveNextPath(candidate) {
   return candidate;
 }
 
+//Registration page
+//Collects user details, checks passwords match, then creates an account
 function RegisterPage() {
   const {register} = useAuth();
   const router = useRouter();
@@ -38,10 +40,12 @@ function RegisterPage() {
   const [error, setError] = useState("");
   const [loading, setLoading] = useState(false);
 
+  //Updates a single field in the form state
   function handleChange(e) {
     setForm((prev) => ({ ...prev, [e.target.name]: e.target.value }));
   }
 
+  //Validates passwords match then submits the registration form
   async function handleSubmit(e) {
     e.preventDefault();
     setError("");

web/app/reset-password/page.js

@@ -9,6 +9,7 @@ const labelCls = "flex flex-col gap-[0.35rem] text-[0.9rem] font-semibold text-[
 const inputCls = "px-[0.85rem] py-[0.6rem] border border-[#ddd] rounded-lg text-base outline-none transition-all focus:border-[#e68672] focus:shadow-[0_0_0_3px_rgba(230,134,114,0.2)]";
 const submitBtnCls = "mt-2 py-3 bg-[#e68672] text-white border-none rounded-lg text-base font-bold cursor-pointer transition-all hover:bg-[#d4705e] active:scale-[0.98] disabled:opacity-60 disabled:cursor-not-allowed";
 
+//Reset password page, reads the token from the URL and lets the user set a new password
 function ResetPasswordPage() {
   const router = useRouter();
   const searchParams = useSearchParams();
@@ -36,6 +37,7 @@ function ResetPasswordPage() {
     );
   }
 
+  //Validates passwords match, submits the reset, then redirects to login after 3 seconds
   async function handleSubmit(e) {
     e.preventDefault();
     setError("");

web/components/ClientProviders.js

@@ -5,6 +5,7 @@ import { CartProvider } from "@/context/CartContext";
 import { ChatWidgetProvider } from "@/context/ChatWidgetContext";
 import FloatingChat from "@/components/FloatingChat";
 
+//Wraps the app in all client-side context providers and adds the floating chat button
 export default function ClientProviders({ children }) {
   return (
     <AuthProvider>

web/components/FloatingChat.js

@@ -6,6 +6,7 @@ import { usePathname } from "next/navigation";
 import { useAuth } from "@/context/AuthContext";
 import { useChatWidget } from "@/context/ChatWidgetContext";
 
+//Floating chat button and popup window - handles AI chat, live support, and conversation history
 export default function FloatingChat() {
   const pathname = usePathname();
   const { user, token } = useAuth();
@@ -25,6 +26,7 @@ export default function FloatingChat() {
  const prevAiLengthRef = useRef(0);
 const prevLiveLengthRef = useRef(0);  
 
+  //Scrolls to the bottom when new messages arrive, but only if already near the bottom
   useEffect(() => {
   if (!isOpen) return;
   const aiGrew = aiMessages.length > prevAiLengthRef.current;
@@ -41,12 +43,13 @@ const prevLiveLengthRef = useRef(0);
     if (view === "history" && token && isOpen) loadConversations(token);
   }, [view, token, isOpen, loadConversations]);
 
-  // Hide widget on dedicated chat pages
+  //Don't show the widget on the full chat pages since they have their own UI
   if (pathname === "/ai-chat" || pathname === "/chat") return null;
 
   const openConvCount = conversations.filter((c) => c.status === "OPEN").length;
   const isLiveClosed  = activeConv?.status === "CLOSED";
 
+  //Sends the typed message to whichever chat is currently active
   async function handleSend(e) {
     e?.preventDefault();
     const text = input.trim();
@@ -358,7 +361,7 @@ const prevLiveLengthRef = useRef(0);
   );
 }
 
-// Styles
+//Inline style objects for the floating chat widget
 const s = {
   fab: {
     position: "fixed", bottom: 24, right: 24,

web/components/Footer.js

@@ -1,8 +1,10 @@
 import Link from "next/link";
 import Image from "next/image";
 
+//Shared CSS class for footer links
 const linkCls = "text-[#2f2f2f] no-underline text-[0.95rem] opacity-85 transition-opacity hover:opacity-100 hover:underline";
 
+//Site footer with quick links, company links, and contact info
 export default function Footer() {
   return (
     <footer className="bg-[#e68672] text-[#2f2f2f] mt-16 rounded-t-[10px]">

web/components/Navigation.js

@@ -7,11 +7,13 @@ import { useEffect, useState } from "react";
 import { useAuth } from "@/context/AuthContext";
 import { useCart } from "@/context/CartContext";
 
+//Shared CSS class strings for nav links and buttons
 const drawerLinkCls = "block text-[#2f2f2f] no-underline text-[1.05rem] font-medium px-2 py-[0.65rem] rounded-md transition-colors hover:bg-[rgba(47,47,47,0.1)]";
 const navLinkCls = "text-[#2f2f2f] no-underline text-[1.05rem] font-semibold px-4 py-2 rounded-md transition-all duration-[250ms] hover:bg-white/25";
 const cartBtnCls = "relative inline-flex items-center text-[1.4rem] no-underline mr-2 px-[0.4rem] py-[0.2rem] rounded-md transition-colors hover:bg-white/20";
 const cartBadgeCls = "absolute -top-1 -right-1.5 bg-[#e53935] text-white rounded-full text-[0.65rem] font-bold min-w-[18px] h-[18px] flex items-center justify-center px-[3px] leading-none";
 
+//Cart icon with a red badge showing the number of items
 function CartIcon({ itemCount, onClick }) {
   return (
     <Link href="/cart" className={`${cartBtnCls} group`} aria-label="Cart" onClick={onClick}>
@@ -26,6 +28,7 @@ function CartIcon({ itemCount, onClick }) {
   );
 }
 
+//Top navigation bar - desktop links on the left, store selector and auth on the right, hamburger menu on mobile
 export default function DisplayNav() {
   const { user, logout, loading } = useAuth();
   const { itemCount, selectedStoreId, setStoreId } = useCart();
@@ -33,6 +36,7 @@ export default function DisplayNav() {
   const [stores, setStores] = useState([]);
   const [menuOpen, setMenuOpen] = useState(false);
 
+  //Loads the store list for the store selector dropdown
   useEffect(() => {
     fetch("/api/v1/stores?size=100")
       .then((r) => (r.ok ? r.json() : null))
@@ -40,6 +44,7 @@ export default function DisplayNav() {
       .catch(() => {});
   }, []);
 
+  //Logs out and sends the user to the home page
   function handleLogout() {
     logout();
     router.push("/");
@@ -48,6 +53,7 @@ export default function DisplayNav() {
 
   function closeMenu() { setMenuOpen(false); }
 
+  //Store selector dropdown, shared between desktop and mobile layouts
   const storeSelect = (extraCls = "") => stores.length > 0 && (
     <select
       className={`bg-[rgba(47,47,47,0.1)] text-[#2f2f2f] border border-[rgba(47,47,47,0.35)] rounded-md px-[0.6rem] py-[0.3rem] text-[0.9rem] cursor-pointer outline-none transition-colors hover:bg-[rgba(47,47,47,0.2)] ${extraCls}`}

web/components/PetCard.js

@@ -1,6 +1,7 @@
 import Link from "next/link";
 import { getStatusClass } from "@/components/petUtils";
 
+//Card shown in the adopt grid, links to the pet's detail page
 export default function PetCard({petId, petName, petSpecies, petStatus, imageUrl}) {
   return (
     <Link href={`/adopt/${petId}`} className="no-underline text-inherit flex flex-col rounded-2xl overflow-hidden shadow-[0_4px_12px_rgba(0,0,0,0.08)] transition-all duration-300 hover:-translate-y-1.5 hover:shadow-[0_8px_24px_rgba(0,0,0,0.13)] bg-white">

web/components/PetProfile.js

@@ -5,6 +5,7 @@ const fieldRowCls = "flex items-center px-5 py-[0.85rem] border-b border-[#eee]
 const fieldLabelCls = "w-[140px] text-[0.9rem] font-semibold text-[#888] uppercase tracking-[0.04em] shrink-0";
 const fieldValueCls = "text-base text-[#333]";
 
+//Full detail view for a single pet, shown on the adopt detail page
 export default function PetProfile({ petId, petName, petSpecies, petBreed, petAge, petStatus, petPrice, imageUrl, storeId, storeName }) {
   return (
     <div className="flex gap-12 bg-white rounded-2xl shadow-[0_6px_24px_rgba(0,0,0,0.1)] overflow-hidden max-[768px]:flex-col max-[768px]:gap-0">
@@ -31,22 +32,22 @@ export default function PetProfile({ petId, petName, petSpecies, petBreed, petAg
         <div className="flex flex-col border border-[#eee] rounded-[10px] overflow-hidden">
           <div className={fieldRowCls}>
             <span className={fieldLabelCls}>Species</span>
-            <span className={fieldValueCls}>{petSpecies ?? "—"}</span>
+            <span className={fieldValueCls}>{petSpecies ?? "-"}</span>
           </div>
           <div className={fieldRowCls}>
             <span className={fieldLabelCls}>Breed</span>
-            <span className={fieldValueCls}>{petBreed ?? "—"}</span>
+            <span className={fieldValueCls}>{petBreed ?? "-"}</span>
           </div>
           <div className={fieldRowCls}>
             <span className={fieldLabelCls}>Age</span>
             <span className={fieldValueCls}>
-              {petAge != null ? `${petAge} ${petAge === 1 ? "year" : "years"}` : "—"}
+              {petAge != null ? `${petAge} ${petAge === 1 ? "year" : "years"}` : "-"}
             </span>
           </div>
           <div className={fieldRowCls}>
             <span className={fieldLabelCls}>Adoption Fee</span>
             <span className={`${fieldValueCls} font-bold text-[#1a7a3c] text-[1.1rem]`}>
-              {petPrice != null ? `$${parseFloat(petPrice).toFixed(2)}` : "—"}
+              {petPrice != null ? `$${parseFloat(petPrice).toFixed(2)}` : "-"}
             </span>
           </div>
         </div>

web/components/ProductCard.js

@@ -6,8 +6,10 @@ import { useRouter } from "next/navigation";
 import { useAuth } from "@/context/AuthContext";
 import { useCart } from "@/context/CartContext";
 
+//Shared CSS class for the quantity plus and minus buttons
 const qtyBtnCls = "w-7 h-7 border border-[#ddd] rounded-md bg-white text-base cursor-pointer flex items-center justify-center transition-colors hover:border-[#e68672] disabled:opacity-50";
 
+//Card shown in the products grid, includes quantity selector and add to cart button
 export default function ProductCard({ prodId, prodName, categoryName, prodPrice, imageUrl }) {
   const { user } = useAuth();
   const { addItem, selectedStoreId } = useCart();
@@ -16,6 +18,7 @@ export default function ProductCard({ prodId, prodName, categoryName, prodPrice,
   const [adding, setAdding] = useState(false);
   const [feedback, setFeedback] = useState(null);
 
+  //Adds the selected quantity to the cart, redirects to login if not logged in
   async function handleAddToCart(e) {
     e.preventDefault();
     if (!user) { router.push("/login"); return; }

web/components/ProductProfile.js

@@ -9,6 +9,7 @@ const fieldLabelCls = "w-[140px] text-[0.9rem] font-semibold text-[#888] upperca
 const fieldValueCls = "text-base text-[#333]";
 const qtyBtnCls = "w-7 h-7 border border-[#ddd] rounded-md bg-white text-base cursor-pointer flex items-center justify-center transition-colors hover:border-[#e68672] disabled:opacity-50";
 
+//Full detail view for a single product, shown on the product detail page
 export default function ProductProfile({ prodId, prodName, categoryName, prodDesc, prodPrice, imageUrl }) {
   const { user } = useAuth();
   const { addItem, selectedStoreId } = useCart();
@@ -17,8 +18,10 @@ export default function ProductProfile({ prodId, prodName, categoryName, prodDes
   const [adding, setAdding] = useState(false);
   const [feedback, setFeedback] = useState(null);
 
+  //Increments or decrements quantity, minimum of 1
   function changeQty(delta) { setQuantity((q) => Math.max(1, q + delta)); }
 
+  //Adds the chosen quantity to the cart and shows a success or error message
   async function handleAddToCart() {
     setAdding(true);
     setFeedback(null);
@@ -56,17 +59,17 @@ export default function ProductProfile({ prodId, prodName, categoryName, prodDes
         <div className="flex flex-col border border-[#eee] rounded-[10px] overflow-hidden">
           <div className={fieldRowCls}>
             <span className={fieldLabelCls}>Category</span>
-            <span className={fieldValueCls}>{categoryName ?? "—"}</span>
+            <span className={fieldValueCls}>{categoryName ?? "-"}</span>
           </div>
           <div className={fieldRowCls}>
             <span className={fieldLabelCls}>Price</span>
             <span className={`${fieldValueCls} font-bold text-[#1a7a3c] text-[1.1rem]`}>
-              {prodPrice != null ? `$${parseFloat(prodPrice).toFixed(2)}` : "—"}
+              {prodPrice != null ? `$${parseFloat(prodPrice).toFixed(2)}` : "-"}
             </span>
           </div>
           <div className={fieldRowCls}>
             <span className={fieldLabelCls}>Description</span>
-            <span className={fieldValueCls}>{prodDesc ?? "—"}</span>
+            <span className={fieldValueCls}>{prodDesc ?? "-"}</span>
           </div>
         </div>
 

web/components/petUtils.js

@@ -13,6 +13,7 @@ export const SPECIES_EMOJI = {
   guinea: "🐹",
 };
 
+//Returns an emoji for a given species name, falls back to a paw print
 export function getSpeciesEmoji(species) {
   if (!species) {
 
@@ -31,6 +32,7 @@ export function getSpeciesEmoji(species) {
   return "🐾";
 }
 
+//Returns the CSS class name for a pet's status badge
 export function getStatusClass(status) {
   if (!status) {
     return "";

web/context/AuthContext.js

@@ -2,10 +2,14 @@
 
 import { createContext, useContext, useState, useEffect, useCallback } from "react";
 
+//Auth context
+//Stores the logged in user, token, and auth actions
 const AuthContext = createContext(null);
 
+//Key used to save the token in localStorage
 const TOKEN_KEY = "auth_token";
 
+//Fetches the current user from the backend using the stored token
 async function fetchCurrentUser(token) {
   const res = await fetch("/api/v1/auth/me", {
     headers: { Authorization: `Bearer ${token}` },
@@ -14,11 +18,13 @@ async function fetchCurrentUser(token) {
   return res.json();
 }
 
+//Provides auth state to all child components
 export function AuthProvider({ children }) {
   const [user, setUser] = useState(null);
   const [token, setToken] = useState(null);
   const [loading, setLoading] = useState(true);
 
+  //Re-fetches the user info using the current or a newly provided token
   const refreshUser = useCallback(async (providedToken) => {
     const activeToken = providedToken ?? token;
     if (!activeToken) {
@@ -41,6 +47,7 @@ export function AuthProvider({ children }) {
     return userInfo;
   }, [token]);
 
+  //On first load, check if a token was saved and try to restore the session
   useEffect(() => {
     const stored = localStorage.getItem(TOKEN_KEY);
     if (!stored) {
@@ -57,6 +64,7 @@ export function AuthProvider({ children }) {
       .finally(() => setLoading(false));
   }, [refreshUser]);
 
+  //Logs the user in and saves the token
   const login = useCallback(async (username, password) => {
     const res = await fetch("/api/v1/auth/login", {
       method: "POST",
@@ -84,6 +92,7 @@ export function AuthProvider({ children }) {
     return userInfo;
   }, [refreshUser]);
 
+  //Creates a new account and logs the user in right away
   const register = useCallback(async ({ username, password, email, firstName, lastName, phone }) => {
     const res = await fetch("/api/v1/auth/register", {
       method: "POST",
@@ -118,6 +127,7 @@ export function AuthProvider({ children }) {
     return userInfo;
   }, [refreshUser]);
 
+  //Clears the token and user from memory and localStorage
   const logout = useCallback(() => {
     localStorage.removeItem(TOKEN_KEY);
     setToken(null);
@@ -130,6 +140,7 @@ export function AuthProvider({ children }) {
   );
 }
 
+//Hook to access auth state, must be used inside an AuthProvider
 export function useAuth() {
   const ctx = useContext(AuthContext);
   if (!ctx) {

web/context/CartContext.js

@@ -15,10 +15,14 @@ import {
   apiCancelCheckout,
 } from "@/lib/cartApi";
 
+//Cart context
+//Holds the user's cart and all cart actions
 const CartContext = createContext(null);
 
+//Key used to save the selected store in localStorage
 const STORE_KEY = "selected_store_id";
 
+//Provides cart state to all child components
 export function CartProvider({ children }) {
   const { user, token } = useAuth();
   const [cart, setCart] = useState(null);
@@ -26,6 +30,7 @@ export function CartProvider({ children }) {
   const [cartLoading, setCartLoading] = useState(false);
   const [cartError, setCartError] = useState(null);
 
+  //Saves the selected store in state and localStorage
   const setStoreId = useCallback((id) => {
     const parsed = id ? Number(id) : null;
     setSelectedStoreIdState(parsed);
@@ -51,6 +56,7 @@ export function CartProvider({ children }) {
     }
   }, [user, setStoreId]);
 
+  //Fetches the latest cart from the backend
   const refreshCart = useCallback(async () => {
     if (!token || !selectedStoreId) {
       setCart(null);
@@ -173,6 +179,7 @@ export function CartProvider({ children }) {
     [token, selectedStoreId, refreshCart]
   );
 
+  //Total number of items across all cart rows, used for the cart badge in the nav
   const itemCount = cart?.items?.reduce((sum, i) => sum + i.quantity, 0) ?? 0;
 
   return (
@@ -201,6 +208,8 @@ export function CartProvider({ children }) {
   );
 }
 
+//Hook to access cart state
+//Must be used inside a CartProvider
 export function useCart() {
   const ctx = useContext(CartContext);
   if (!ctx) throw new Error("useCart must be used within a CartProvider");

web/context/ChatWidgetContext.js

@@ -4,15 +4,18 @@ import { createContext, useContext, useState, useRef, useCallback, useEffect } f
 import { createStompClient } from "@/lib/chatSocket";
 import { useAuth } from "@/context/AuthContext";
 
+//Chat widget context
+//Manages both the AI chat and the live support chat
 const ChatWidgetContext = createContext(null);
 const API_BASE = "";
 
+//Provides chat state and actions for the floating chat widget
 export function ChatWidgetProvider({ children }) {
   const { user } = useAuth();
   const [isOpen, setIsOpen] = useState(false);
   const [view, setView] = useState("ai"); // "ai" | "history" | "live"
 
-  // AI chat
+  //AI chat messages, loaded from localStorage so they survive page refreshes
   const [aiMessages, setAiMessages] = useState(() => {
     try {
       const saved = localStorage.getItem("fc_aiMessages");
@@ -22,15 +25,16 @@ export function ChatWidgetProvider({ children }) {
   const [aiSending, setAiSending] = useState(false);
   const [aiError, setAiError] = useState(null);
 
-  // Persist aiMessages to localStorage
+  //Save AI messages to localStorage whenever they change
   useEffect(() => {
     localStorage.setItem("fc_aiMessages", JSON.stringify(aiMessages));
   }, [aiMessages]);
 
-  // Keep a ref so sendAiMessage stays stable (no stale-closure over messages)
+  //Ref to the latest messages so the send function always sees current state
   const aiMessagesRef = useRef(aiMessages);
   useEffect(() => { aiMessagesRef.current = aiMessages; }, [aiMessages]);
 
+  //Sends a message to the AI and appends the response to the chat
   const sendAiMessage = useCallback(async (text, token) => {
     if (!text.trim() || !token) return;
     const userMsg = { role: "user", content: text, id: Date.now() };
@@ -54,7 +58,7 @@ export function ChatWidgetProvider({ children }) {
     }
   }, []);
 
-  // Live chat
+  //Live chat state
   const [conversations, setConversations] = useState([]);
   const [convsLoading, setConvsLoading] = useState(false);
   const [activeConvId, setActiveConvId] = useState(null);
@@ -67,6 +71,7 @@ export function ChatWidgetProvider({ children }) {
   const activeConvIdRef = useRef(null);
   const tokenRef = useRef(null);
 
+  //Disconnects the WebSocket if it is active
   const disconnectStomp = useCallback(() => {
     if (stompRef.current) {
       stompRef.current.deactivate();
@@ -74,6 +79,7 @@ export function ChatWidgetProvider({ children }) {
     }
   }, []);
 
+  //Clears all chat state when the user logs out or switches accounts
   const prevUserIdRef = useRef(user?.id);
   useEffect(() => {
     const currentId = user?.id ?? null;
@@ -92,6 +98,7 @@ export function ChatWidgetProvider({ children }) {
     }
   }, [user?.id, disconnectStomp]);
 
+  //Subscribes to incoming messages and conversation updates for a given chat
   const subscribeToConversation = useCallback((client, convId) => {
     client.subscribe(`/topic/chat/conversations/${convId}`, (frame) => {
       try {
@@ -172,6 +179,7 @@ export function ChatWidgetProvider({ children }) {
     }
   }, [liveSending]);
 
+  //Creates a new live chat conversation and requests a human agent
   const startLiveChat = useCallback(async (token) => {
     if (!token || switchingToHuman) return;
     setSwitchingToHuman(true);
@@ -228,6 +236,7 @@ export function ChatWidgetProvider({ children }) {
   );
 }
 
+//Hook to access chat widget state - must be used inside a ChatWidgetProvider
 export function useChatWidget() {
   const ctx = useContext(ChatWidgetContext);
   if (!ctx) throw new Error("useChatWidget must be used within ChatWidgetProvider");

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;