import type { DateTimeFormats, LocaleCode } from '../../../types';
import locales from '../../../locales';

// Function to get the date format based on the displayFormat and locale,
// if no displayFormat or locale is provided, use the default fullDate format
export const getDateFormat = ({
  displayFormat,
  locale,
  localizeDateTime,
}: {
  displayFormat?: string;
  locale?: string;
  localizeDateTime: (key: keyof DateTimeFormats) => string;
}) => {
  // Prioritise displayFormat
  if (displayFormat) {
    return displayFormat;
  }

  // If locale is provided, find the corresponding locale in the locales object
  if (locale && locales[locale as LocaleCode]) {
    const localeObject = locales[locale as LocaleCode];
    if (localeObject) {
      return localeObject.dateTimeFormats.fullDate;
    }
  }

  // If no displayFormat or locale is provided, use the default fullDate format
  return localizeDateTime('fullDate');
};