import "server-only";
import { randomUUID } from "node:crypto";
import { cached } from "@/lib/cache";
import { logger } from "@/lib/logger";
import { redis } from "@/lib/redis";

const REVISION_KEY = "cms:news:revision";
export async function cacheNews<T>(
	key: string,
	ttlMs: number,
	query: () => Promise<T>,
): Promise<T> {
	if (!redis || redis.status === "end") return query();
	let revision: string;
	try {
		revision = (await redis.get(REVISION_KEY)) ?? "0";
	} catch {
		return query();
	}
	return cached(`news:${revision}:${key}`, ttlMs, query);
}
export async function invalidateNewsCache(): Promise<void> {
	if (!redis || redis.status === "end") return;
	try {
		await redis.set(REVISION_KEY, randomUUID());
	} catch (error) {
		logger.error("News saved but public cache invalidation failed", {
			module: "news",
			error,
		});
	}
}