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

import { normalizeInterval } from '../_lib/normalizeInterval/index.ts';
import { constructFrom } from '../constructFrom/index.ts';
import type { ContextOptions, Interval, StepOptions } from '../types.ts';

/**
 * The {@link eachHourOfInterval} function options.
 */
export interface EachHourOfIntervalOptions<DateType extends Date = Date>
  extends StepOptions,
    ContextOptions<DateType> {}

/**
 * The {@link eachHourOfInterval} function result type.
 * Resolves to the appropriate date type based on inputs.
 */
export type EachHourOfIntervalResult<
  IntervalType extends Interval,
  Options extends EachHourOfIntervalOptions | undefined,
> = Array<
  Options extends EachHourOfIntervalOptions<infer DateType>
    ? DateType
    : IntervalType['start'] extends Date
      ? IntervalType['start']
      : IntervalType['end'] extends Date
        ? IntervalType['end']
        : Date
>;

/**
 * @name eachHourOfInterval
 * @category Interval Helpers
 * @summary Return the array of hours within the specified time interval.
 *
 * @description
 * Return the array of hours within the specified time interval.
 *
 * @typeParam IntervalType - Interval type.
 * @typeParam Options - Options type.
 *
 * @param interval - The interval.
 * @param options - An object with options.
 *
 * @returns The array with starts of hours from the hour of the interval start to the hour of the interval end
 *
 * @example
 * // Each hour between 6 October 2014, 12:00 and 6 October 2014, 15:00
 * const result = eachHourOfInterval({
 *   start: new Date(2014, 9, 6, 12),
 *   end: new Date(2014, 9, 6, 15)
 * });
 * //=> [
 * //   Mon Oct 06 2014 12:00:00,
 * //   Mon Oct 06 2014 13:00:00,
 * //   Mon Oct 06 2014 14:00:00,
 * //   Mon Oct 06 2014 15:00:00
 * // ]
 */
export function eachHourOfInterval<
  IntervalType extends Interval,
  Options extends EachHourOfIntervalOptions | undefined = undefined,
>(interval: IntervalType, options?: Options): EachHourOfIntervalResult<IntervalType, Options> {
  const { start, end } = normalizeInterval(options?.in, interval);

  let reversed = +start > +end;
  const endTime = reversed ? +start : +end;
  const date = reversed ? end : start;
  date.setMinutes(0, 0, 0);

  let step = options?.step ?? 1;
  if (!step) return [];
  if (step < 0) {
    step = -step;
    reversed = !reversed;
  }

  const dates: EachHourOfIntervalResult<IntervalType, Options> = [];

  while (+date <= endTime) {
    dates.push(constructFrom(start, date));
    date.setHours(date.getHours() + step);
  }

  return reversed ? dates.reverse() : dates;
}

/* eslint-enable */