feat: implement notifications system with API endpoints for fetching and marking notifications as read

src/app/api/notifications/unread-count/route.js

@@ -0,0 +1,23 @@
+import { NextRequest, NextResponse } from "next/server";
+import { auth } from "@/lib/auth";
+import { getUnreadNotificationCount } from "@/lib/notifications";
+
+export async function GET(request) {
+	try {
+		const session = await auth();
+
+		if (!session?.user?.id) {
+			return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+		}
+
+		const unreadCount = await getUnreadNotificationCount(session.user.id);
+
+		return NextResponse.json({ unreadCount });
+	} catch (error) {
+		console.error("Error fetching unread notification count:", error);
+		return NextResponse.json(
+			{ error: "Internal server error" },
+			{ status: 500 }
+		);
+	}
+}