// Public REST API — count of currently-online users.
//
// `online` is the emulator's string flag "1" / "0" (see User model). Returns
// { count: 0 } (never 500) on DB failure.

import { count, eq } from "drizzle-orm";
import { apiJson } from "@/lib/api";
import { cached } from "@/lib/cache";
import { db, User } from "@/lib/db";

export async function GET(_req: Request) {
	try {
		const result = await cached("online_count", 10_000, async () => {
			const [row] = await db
				.select({ total: count() })
				.from(User)
				.where(eq(User.online, "1"));
			return row?.total ?? 0;
		});
		return apiJson({ count: result });
	} catch {
		return apiJson({ count: 0 });
	}
}