refactored/cleaned up API + added support for renaming tags

lib/api/controllers/users/userId/getUserById.ts

@@ -0,0 +1,32 @@
+import { prisma } from "@/lib/api/db";
+
+export default async function getUser(userId: number) {
+  const user = await prisma.user.findUnique({
+    where: {
+      id: userId,
+    },
+    include: {
+      whitelistedUsers: {
+        select: {
+          username: true,
+        },
+      },
+    },
+  });
+
+  if (!user)
+    return { response: "User not found or profile is private.", status: 404 };
+
+  const whitelistedUsernames = user.whitelistedUsers?.map(
+    (usernames) => usernames.username
+  );
+
+  const { password, ...lessSensitiveInfo } = user;
+
+  const data = {
+    ...lessSensitiveInfo,
+    whitelistedUsers: whitelistedUsernames,
+  };
+
+  return { response: data, status: 200 };
+}