export function toCents(amount: number): number {
  return Math.round(amount * 100);
}

export function fromCents(cents: number): number {
  return cents / 100;
}

const LOCALE_BY_CURRENCY: Record<string, string> = {
  EUR: 'de-DE',
  USD: 'en-US',
  GBP: 'en-GB',
  CHF: 'fr-CH',
};

export function formatCurrency(cents: number, currency: string): string {
  const locale = LOCALE_BY_CURRENCY[currency] ?? 'de-DE';
  return new Intl.NumberFormat(locale, {
    style: 'currency',
    currency,
  }).format(fromCents(cents));
}