import { count, desc, eq } from "drizzle-orm";
import { apiJson } from "@/lib/api";
import { FALLBACK_HOTEL_NAME } from "@/lib/brand";
import { db, User, WebsiteArticles } from "@/lib/db";
import { resolveHotelName } from "@/lib/hotel-name";
import { apiCacheKey, cacheSafe, redisCache } from "@/lib/redis-cache";

/**
 * GET /api/home — combined landing payload: the latest 4 website_articles and
 * the current online player count (users.online === "1"). Mirrors the queries
 * used by the public pages and the admin dashboard.
 */
export async function GET(_req: Request) {
	try {
		const data = await redisCache(apiCacheKey("home"), 15, async () => {
			const [articles, onlineRows, hotelName] = await Promise.all([
				db
					.select({
						id: WebsiteArticles.id,
						title: WebsiteArticles.title,
						slug: WebsiteArticles.slug,
						shortStory: WebsiteArticles.shortStory,
						image: WebsiteArticles.image,
						createdAt: WebsiteArticles.createdAt,
					})
					.from(WebsiteArticles)
					.orderBy(desc(WebsiteArticles.createdAt))
					.limit(4),
				db.select({ total: count() }).from(User).where(eq(User.online, "1")),
				resolveHotelName(),
			]);
			return cacheSafe({
				articles,
				online: onlineRows[0]?.total ?? 0,
				hotelName,
			});
		});
		return apiJson(data);
	} catch {
		return apiJson(
			{ articles: [], online: 0, hotelName: FALLBACK_HOTEL_NAME },
			{ status: 200 },
		);
	}
}