import dayjs from './day.js'

export const DateFormat = "MM/DD/YYYY";
const RuleSets = [
  {
    title: "V1",
    range: [dayjs("2010-01-01"), dayjs("2023-04-01")],
  },
  {
    title: "V2",
    range: [dayjs("2023-04-01"), dayjs("2040-01-01")],
  },
];
//TODO: Verify that this doesnt need to be reversed. 
export function ChangeOfRuleSet({
  prevDateMoment = dayjs(),
  newDateMoment = dayjs(),
}) {
  const prevRuleSet = RuleSets.find(
    (r) =>
      prevDateMoment.isSameOrAfter(r.range[0]) &&
      prevDateMoment.isBefore(r.range[1])
  );

  const newRuleSet = RuleSets.find(
    (r) =>
      newDateMoment.isSameOrAfter(r.range[0]) &&
      newDateMoment.isBefore(r.range[1])
  );

  return prevRuleSet?.title !== newRuleSet?.title;
}

export function WhichRulesetToApply(close_date) {
  const DateMoment = close_date ? dayjs(close_date) : dayjs();
  const newRuleSet = RuleSets.find(
    (r) =>
      DateMoment.isSameOrAfter(r.range[0]) && DateMoment.isBefore(r.range[1])
  );
  //console.log("Using ruleset:", newRuleSet);

  return newRuleSet?.title;
}