import { z } from "zod/v4";
import { ResetInterval } from "../../productModels/intervals/resetInterval.js";

/**
 * A hard usage cap on one feature: at most `limit` units per `interval`.
 * Stored on the customer's `usage_limits` billing-control
 * column; an entry's presence arms the cap. Enforcement happens in the
 * deduction script against customer-scoped usage-window counters.
 */
/** Intervals supported for a usage-limit cap; kept in sync with the UI dropdown. */
export const USAGE_LIMIT_INTERVALS = [
	ResetInterval.Day,
	ResetInterval.Week,
	ResetInterval.Month,
	ResetInterval.Year,
] as const;

export const DbUsageLimitSchema = z.object({
	feature_id: z.string().meta({
		description: "The feature this usage limit applies to.",
	}),
	limit: z.number().min(0).meta({
		description: "Maximum units allowed per interval.",
	}),
	interval: z.enum(USAGE_LIMIT_INTERVALS).meta({
		description:
			"Interval for the cap, aligned to the customer's billing cycle.",
	}),
});

export type DbUsageLimit = z.infer<typeof DbUsageLimitSchema>;