/* eslint-disable eslint-comments/no-unlimited-disable */
/* eslint-disable */
// @ts-nocheck

import { getDefaultOptions } from '../_lib/defaultOptions/index.ts';
import { toDate } from '../toDate/index.ts';
import type { ContextOptions, DateArg, LocalizedOptions, WeekOptions } from '../types.ts';

/**
 * The {@link endOfWeek} function options.
 */
export interface EndOfWeekOptions<DateType extends Date = Date>
  extends WeekOptions,
    LocalizedOptions<'options'>,
    ContextOptions<DateType> {}

/**
 * @name endOfWeek
 * @category Week Helpers
 * @summary Return the end of a week for the given date.
 *
 * @description
 * Return the end of a week for the given date.
 * The result will be in the local timezone.
 *
 * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
 * @typeParam ResultDate - The result `Date` type, it is the type returned from the context function if it is passed, or inferred from the arguments.
 *
 * @param date - The original date
 * @param options - An object with options
 *
 * @returns The end of a week
 *
 * @example
 * // The end of a week for 2 September 2014 11:55:00:
 * const result = endOfWeek(new Date(2014, 8, 2, 11, 55, 0))
 * //=> Sat Sep 06 2014 23:59:59.999
 *
 * @example
 * // If the week starts on Monday, the end of the week for 2 September 2014 11:55:00:
 * const result = endOfWeek(new Date(2014, 8, 2, 11, 55, 0), { weekStartsOn: 1 })
 * //=> Sun Sep 07 2014 23:59:59.999
 */
export function endOfWeek<DateType extends Date, ResultDate extends Date = DateType>(
  date: DateArg<DateType>,
  options?: EndOfWeekOptions<ResultDate>,
): ResultDate {
  const defaultOptions = getDefaultOptions();
  const weekStartsOn =
    options?.weekStartsOn ??
    options?.locale?.options?.weekStartsOn ??
    defaultOptions.weekStartsOn ??
    defaultOptions.locale?.options?.weekStartsOn ??
    0;

  const _date = toDate(date, options?.in);
  const day = _date.getDay();
  const diff = (day < weekStartsOn ? -7 : 0) + 6 - (day - weekStartsOn);

  _date.setDate(_date.getDate() + diff);
  _date.setHours(23, 59, 59, 999);
  return _date;
}

/* eslint-enable */