import { notFound } from 'next/navigation';
import { getRequestConfig } from 'next-intl/server';

export const locales = ['ro', 'en'] as const;

export type Locale = (typeof locales)[number];

export function isLocale(value: string): value is Locale {
  return (locales as readonly string[]).includes(value);
}

export default getRequestConfig(async ({ locale }) => {
  // Validate that the incoming `locale` parameter is valid
  if (locale && !isLocale(locale)) notFound();

  // Ensure locale is always a string
  const validLocale = locale || 'ro';

  return {
    locale: validLocale,
    messages: (await import(`./messages/${validLocale}.json`)).default,
    timeZone: 'Europe/Bucharest' // Add timezone for Romania
  };
});