import DateTimeFormatOptions = Intl.DateTimeFormatOptions;

export const makeAvailableReactDateChecker = (
  datepickerId,
  formatOptions: DateTimeFormatOptions = {
    year: 'numeric',
    month: '2-digit',
    day: '2-digit',
  }
) => {
  const availableDatesElems = document.getElementById(datepickerId);
  // @ts-ignore - for each not recognized
  const availableDates = JSON.parse(
    availableDatesElems.dataset['availableDates']
  );

  return (selectedDate) => {
    const formattedDate = new Date(selectedDate).toLocaleDateString('en-CA');
    return availableDates.indexOf(formattedDate) >= 0;
  };
};

export function parseDateRangeString(dateRange: string, delimiter: string="-"){
    let dates = dateRange.split(delimiter);
    if (dates.length == 2 && dates[1] != ''){
        return {startDate: Date.parse(dates[0].trim()), endDate: Date.parse(dates[1].trim())}
    } else {
        return {startDate: Date.parse(dates[0].trim()), endDate: undefined}
    }
}