Health-Informatics-UoN · vpnu · Jun 1, 2026 · Jun 1, 2026
diff --git a/app/page.tsx b/app/page.tsx
@@ -1,41 +1,28 @@
-import { Suspense } from "react";
-import { use } from "react";
 import ConceptsSection from "@/components/ConceptsSection";
 import NotesSection from "@/components/NotesSection";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import DomainSelect from "@/components/DomainSelect";
 import { ModeToggle } from "@/components/mode-toggle";
 
-export default function Page(props: {
-  searchParams: Promise<{
-    conceptId?: string;
-    domain?: string;
-  }>;
-}) {
-  return (
-    <Suspense fallback={<div>Loading page...</div>}>
-      <PageContent {...props} />
-    </Suspense>
-  );
-}
-
-function PageContent({
+export default async function Page({
   searchParams,
 }: {
   searchParams: Promise<{
-    conceptId?: string | string[];
+    ids?: string | string[];
     domain?: string;
     page?: string;
   }>;
 }) {
-  const params = use(searchParams);
+  const params = await searchParams;
+
+  const ids =
+    typeof params.ids === "string" ? params.ids.split(",").filter(Boolean) : [];
+
+  const domain =
+    typeof params.domain === "string" && params.domain.length > 0
+      ? params.domain
+      : "All";
 
-  const conceptIds = Array.isArray(params.conceptId)
-    ? params.conceptId
-    : params.conceptId
-      ? [params.conceptId]
-      : [];
-  const domain = params.domain ?? "All";
   const page = Math.max(1, parseInt(params.page ?? "1", 10) || 1);
   return (
     <div className="min-h-screen bg-muted/40 p-6">
@@ -64,12 +51,11 @@ function PageContent({
 
       <div className="grid grid-cols-1 md:grid-cols-3 gap-6">
         <Card className="p-0 md:col-span-1">
-            <ConceptsSection domain={domain} />
+          <ConceptsSection domain={domain} />
         </Card>
 
-        <Card key={`${conceptIds.join(",")}-${domain}-${page}`} className="p-0 md:col-span-2">
-            <NotesSection  conceptIds={conceptIds} page={page} />
-
+        <Card className="p-0 md:col-span-2">
+          <NotesSection conceptIds={ids} page={page} />
         </Card>
       </div>
     </div>

diff --git a/components/ConceptList.tsx b/components/ConceptList.tsx
@@ -1,52 +1,44 @@
 "use client";
+
 import { usePathname, useRouter, useSearchParams } from "next/navigation";
 import type { Concept } from "@/types/OmopTables";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
 import { ScrollArea, ScrollBar } from "@/components/ui/scroll-area";
 import { buildSearchParams } from "@/lib/helpers";
-import { useEffect, useState } from "react";
 
 export default function ConceptList({ concepts }: { concepts: Concept[] }) {
   const router = useRouter();
   const pathname = usePathname();
   const searchParams = useSearchParams();
-  const selectedConcepts = searchParams.getAll("conceptId")
-  const [loading, setLoading] = useState(false);
+  const selectedConcepts =
+    searchParams.get("ids")?.split(",").filter(Boolean) ?? [];
 
   const onSelect = (conceptId: string) => {
-    if (loading) return;
-
-    setLoading(true);
-
-    const current = searchParams.getAll("conceptId");
+    const current = selectedConcepts;
 
     const nextConceptIds = current.includes(conceptId)
       ? current.filter((id) => id !== conceptId)
       : [...current, conceptId];
 
     const query = buildSearchParams({
-      conceptIds: nextConceptIds,
+      ids: nextConceptIds,
       domain: searchParams.get("domain"),
       page: 1,
     });
 
-    router.replace(`${pathname}?${query}`, {
+    router.push(`${pathname}?${query}`, {
       scroll: false,
     });
-
   };
-  useEffect(() => {
-  setLoading(false);
-}, [searchParams]);
+
   const clearSelection = () => {
     const query = buildSearchParams({
-      conceptIds: [],
+      ids: [],
       domain: searchParams.get("domain"),
       page: 1,
     });
-
-    router.replace(`${pathname}?${query}`, { scroll: false });
+    router.push(`${pathname}?${query}`, { scroll: false });
   };
 
   return (

diff --git a/components/DomainSelect.tsx b/components/DomainSelect.tsx
@@ -14,22 +14,30 @@ export default function DomainSelect({ domain }: { domain: string }) {
   const pathname = usePathname();
 
   function handleChange(domain: string) {
-    const params = new URLSearchParams();
+    const params = new URLSearchParams(searchParams.toString());
 
-    // Keep domain if exists
+    // Keep domain if it's not "All"
     if (domain && domain !== "All") {
       params.set("domain", domain);
+    } else {
+      params.delete("domain");
     }
 
     // Keep selected concepts
-    const conceptIds = searchParams.getAll("conceptId")
-    conceptIds.forEach((id) => params.append("conceptId", id));
+    const ids = searchParams.get("ids")?.split(",").filter(Boolean) ?? [];
+
+    if (ids.length > 0) {
+      params.set("ids", ids.join(","));
+    }
 
     // Reset page number
     params.set("page", "1");
 
-    router.replace(`${pathname}?${params.toString()}`, { scroll: false });
+    router.push(`${pathname}?${params.toString()}`, {
+      scroll: false,
+    });
   }
+
   return (
     <Select value={domain} onValueChange={handleChange}>
       <SelectTrigger className="w-50">

diff --git a/components/NoteCard.tsx b/components/NoteCard.tsx
@@ -19,7 +19,6 @@ import { ChevronDownIcon } from "@radix-ui/react-icons";
 import Link from "next/link";
 import { usePathname, useRouter, useSearchParams } from "next/navigation";
 import { buildSearchParams } from "@/lib/helpers";
-import { useTransition } from "react";
 
 export default function NoteCard({
   note,
@@ -32,9 +31,7 @@ export default function NoteCard({
   const pathname = usePathname();
   const searchParams = useSearchParams();
 
-  const [isPending, startTransition] = useTransition();
-
-  const selectedConceptIds = searchParams.getAll("conceptId");
+  const ids = searchParams.get("ids")?.split(",").filter(Boolean) ?? [];
 
   const pmcid = note.note_source_value?.match(/PMC(\d+)/)?.[1];
 
@@ -51,31 +48,25 @@ export default function NoteCard({
   );
 
   const selectConcept = (conceptId: string) => {
-    const existing = searchParams.getAll("conceptId");
+    const existing = ids;
 
     const nextConceptIds = existing.includes(conceptId)
       ? existing.filter((id) => id !== conceptId)
       : [...existing, conceptId];
 
     const query = buildSearchParams({
-      conceptIds: nextConceptIds,
+      ids: nextConceptIds,
       domain: searchParams.get("domain"),
       page: 1,
     });
 
-    startTransition(() => {
-      router.replace(`${pathname}?${query}`, {
-        scroll: false,
-      });
-    });
+    router.push(`${pathname}?${query}`, { scroll: false });
   };
 
   return (
     <Card
       className={`
         bg-zinc-50 ring-foreground/15 dark:bg-neutral-800 mb-5
-        transition-opacity
-        ${isPending ? "opacity-60 pointer-events-none" : ""}
       `}
     >
       <CardHeader>
@@ -89,29 +80,20 @@ export default function NoteCard({
               {article.title}
             </Link>
           ) : (
-            <p className="text-sm text-gray-400">
-              Loading Case Reports...
-            </p>
+            <p className="text-sm text-gray-400">Loading Case Reports...</p>
           )}
         </CardTitle>
-
-        {isPending && (
-          <div className="text-sm text-muted-foreground">
-            Loading Case Reports...
-          </div>
-        )}
       </CardHeader>
 
       <CardContent className="flex flex-wrap items-center gap-2 md:flex-row">
         {article ? (
-          <Collapsible defaultOpen={true} className="w-full rounded-md data-[state=open]:bg-muted">
+          <Collapsible
+            defaultOpen={true}
+            className="w-full rounded-md data-[state=open]:bg-muted"
+          >
             <CollapsibleTrigger asChild>
-              <Button
-                variant="ghost"
-                className="group w-full bg-transparent"
-              >
+              <Button variant="ghost" className="group w-full bg-transparent">
                 Description
-
                 <ChevronDownIcon className="ml-auto transition-transform group-data-[state=open]:rotate-180" />
               </Button>
             </CollapsibleTrigger>
@@ -121,18 +103,14 @@ export default function NoteCard({
             </CollapsibleContent>
           </Collapsible>
         ) : (
-          <p className="text-sm text-gray-400">
-            Loading Case Reports...
-          </p>
+          <p className="text-sm text-gray-400">Loading Case Reports...</p>
         )}
       </CardContent>
 
       <CardFooter className="bg-neutral-50 border-t-gray-200 dark:bg-neutral-900 dark:border-t-neutral-600">
         <div className="flex flex-wrap gap-2">
           {uniqueConcepts.map((c: Concept) => {
-            const selected = selectedConceptIds.includes(
-              String(c.concept_id),
-            );
+            const selected = ids.includes(String(c.concept_id));
 
             return (
               <Badge
@@ -178,4 +156,4 @@ export default function NoteCard({
       </CardFooter>
     </Card>
   );
-}
+}
diff --git a/components/NotesList.tsx b/components/NotesList.tsx
@@ -8,7 +8,7 @@ export default async function NotesList({
   relatedConcepts,
   notes,
   conceptDetails,
-  total,
+  total
 }: {
   relatedConcepts: Array<{
     inputConceptId: string;
@@ -32,7 +32,7 @@ export default async function NotesList({
         .map((note) => note.note_source_value?.match(/PMC(\d+)/)?.[1])
         .filter((id): id is string => Boolean(id)),
     ),
-  );
+  ).sort();
   if (pmcids.length === 0) return;
   const articles =
     pmcids.length > 0 ? await getMultiplePmcArticles(pmcids) : {};
@@ -99,18 +99,18 @@ export default async function NotesList({
               </Badge>
             </div>
             <div className="grid grid-cols-1 gap-4 py-1">
-              {notes.map((note) => {
-                const pmcid = note.note_source_value?.match(/PMC(\d+)/)?.[1];
+            {notes.map((note) => {
+              const pmcid = note.note_source_value?.match(/PMC(\d+)/)?.[1];
 
-                return (
-                  <NoteCard
-                    key={note.note_id}
-                    note={note}
-                    article={pmcid ? articles[pmcid] : null}
-                  />
-                );
-              })}
-            </div>
+              return (
+                <NoteCard
+                  key={note.note_id}
+                  note={note}
+                  article={pmcid ? articles[pmcid] : null}
+                />
+              );
+            })}
+          </div>
           </div>
         )}
       </CardContent>

diff --git a/components/NotesPagination.tsx b/components/NotesPagination.tsx
@@ -22,16 +22,13 @@ export default function NotesPagination({
   const searchParams = useSearchParams();
 
   const createPageURL = (newPage: number) => {
-    const params = new URLSearchParams();
+    const params = new URLSearchParams(searchParams.toString());
 
-    // Get domain if it exists
-    const domain = searchParams.get("domain");
-    if (domain && domain !== "All") {
-      params.set("domain", domain);
-    }
+    const ids = searchParams.get("ids")?.split(",").filter(Boolean) ?? [];
     // Get conceptIds and add to URL
-    const conceptIds = searchParams.getAll("conceptId")
-    conceptIds.forEach((id) => params.append("conceptId", id));
+    if (ids.length > 0) {
+      params.set("ids", ids.join(","));
+    }
 
     // Add the page number
     params.set("page", String(newPage));

diff --git a/lib/helpers.ts b/lib/helpers.ts
@@ -1,9 +1,9 @@
 export function buildSearchParams({
-  conceptIds = [],
+  ids = [],
   domain,
   page = 1,
 }: {
-  conceptIds?: string[];
+  ids?: string[];
   domain?: string | null;
   page?: number;
 }) {
@@ -13,12 +13,10 @@ export function buildSearchParams({
   if (domain && domain !== "All") {
     params.set("domain", domain);
   }
-
-  // Sort and add unique conceptIds
-  [...new Set(conceptIds)]
-    .map(String)
-    .forEach((id) => params.append("conceptId", id));
-
+  // Add unique conceptIds
+  if (ids.length) {
+    params.set("ids", [...new Set(ids)].join(","));
+  }
   // Set page
   params.set("page", String(page));