Function formatUsageLimitMessage

site/src/pages/AgentsPage/utils/usageLimitMessage.ts:89–115

(
	data: UsageLimitData,
	fallback = "Your usage limit has been reached.",
)

 * fields are missing or invalid.
 */
export function formatUsageLimitMessage(
	data: UsageLimitData,
	fallback = "Your usage limit has been reached.",
): string {
	const { spent_micros, limit_micros, resets_at } = data;

	// All structured fields must be present and valid for the
	// detailed message.
	if (
		typeof spent_micros !== "number" ||
		typeof limit_micros !== "number" ||
		typeof resets_at !== "string" ||
		!resets_at
	) {
		return fallback;
	}

	const spent = formatCostMicros(spent_micros);
	const limit = formatCostMicros(limit_micros);
	const resetDate = formatResetDate(resets_at);

	if (!resetDate) {
		return `You've used ${spent} of your ${limit} limit.`;
	}

	return `You've used ${spent} of your ${limit} limit. Resets ${resetDate}.`;
}