import { isValid, startOfDay, subDays } from "date-fns";


const DATE_FORMATTER = new Intl.DateTimeFormat("en", {
  dateStyle: "medium",
});

export function formatDate(date: Date) {
  return DATE_FORMATTER.format(date);
}

export const RANGE_OPTIONS = {
  last_7_days: {
    label: "Last 7 Days",
    startDate: startOfDay(subDays(new Date(), 6)),
    endDate: null,
  },
  last_30_days: {
    label: "Last 30 Days",
    startDate: startOfDay(subDays(new Date(), 29)),
    endDate: null,
  },
  last_90_days: {
    label: "Last 90 Days",
    startDate: startOfDay(subDays(new Date(), 89)),
    endDate: null,
  },
  last_365_days: {
    label: "Last 365 Days",
    startDate: startOfDay(subDays(new Date(), 364)),
    endDate: null,
  },
  /*all_time: {
    label: "All Time",
    startDate: null,
    endDate: null,
  }, */
};


export const getRangeOption = (range?: string, from?: string, to?: string) => {
  if (range == null) {
    const startDate = new Date(from || "");
    const endDate = new Date(to || "");
    if (!isValid(startDate) || !isValid(endDate)) return;

    return {
      label: `${formatDate(startDate)} - ${formatDate(endDate)}`,
      startDate,
      endDate,
    };
  } ;
  return RANGE_OPTIONS[range as keyof typeof RANGE_OPTIONS];
}