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path: root/src/lib/Media/Anime/Airing/time.ts
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import type { Media } from '$lib/Data/AniList/media';
import type { MediaPrequel } from '$lib/Data/AniList/prequels';
import type { SubsPlease } from '$lib/Media/Anime/Airing/Subtitled/subsPlease';
import settings from '$stores/settings';
import { injectAiringTime } from './Subtitled/match';
import { totalEpisodes } from '../episodes';
import { get } from 'svelte/store';

export const airingTime = (
  originalAnime: Media,
  subsPlease: SubsPlease | null,
  upcoming = false,
  forceDays = false
) => {
  const anime = injectAiringTime(originalAnime, subsPlease);
  const airingAt = anime.nextAiringEpisode?.airingAt;
  const untilAiring = airingAt ? Math.round((airingAt - Date.now() / 1000) * 100) / 100 : undefined;
  const time = new Date(airingAt ? airingAt * 1000 : 0).toLocaleTimeString([], {
    hour12: !settings.get().display24HourTime,
    hour: 'numeric',
    minute: '2-digit'
  });
  let timeFrame = '';
  let hours = null;
  const shortenCountdown = get(settings).displayShortCountdown;

  if (
    (anime as unknown as MediaPrequel).startDate &&
    new Date(
      anime.startDate.year,
      (anime as unknown as MediaPrequel).startDate.month,
      (anime as unknown as MediaPrequel).startDate.day
    ) < new Date()
  )
    return `<span class="opaque">on ${new Date(
      anime.startDate.year,
      (anime as unknown as MediaPrequel).startDate.month,
      (anime as unknown as MediaPrequel).startDate.day
    ).toLocaleDateString()}</span>`;

  if (untilAiring !== undefined) {
    let minutes = untilAiring / 60;
    let few = true;

    if (minutes > 60) {
      hours = minutes / 60;

      if (hours > 24) {
        let weeks = Math.floor(hours / 24) / 7;

        few = false;

        if (weeks >= 1.5 && !forceDays) {
          weeks = Math.round(weeks);

          timeFrame = `${weeks}${shortenCountdown ? 'w' : ' week'}${
            weeks === 1 || shortenCountdown ? '' : 's'
          }`;
        } else {
          const days = Math.round(Math.floor(hours / 24));
          const residualHours = Math.floor(hours - days * 24);

          timeFrame += `${days.toFixed(0)}${shortenCountdown ? 'd' : ' day'}${
            days === 1 || shortenCountdown ? '' : 's'
          }`;

          if (residualHours > 0)
            timeFrame += `${shortenCountdown ? '' : ' '}${residualHours}${
              shortenCountdown ? 'h' : ' hour'
            }${residualHours === 1 || shortenCountdown ? '' : 's'}`;
        }
      } else {
        const residualMinutes = Math.round(minutes - Math.floor(hours) * 60);

        timeFrame += `${hours.toFixed(0)}${shortenCountdown ? 'h' : '  hour'}${
          hours === 1 || shortenCountdown ? '' : 's'
        }`;

        if (residualMinutes > 0)
          timeFrame += `${shortenCountdown ? '' : ' '}${residualMinutes}${
            shortenCountdown ? 'm' : ' minute'
          }${residualMinutes === 1 || shortenCountdown ? '' : 's'}`;
      }
    } else {
      minutes = Math.round(minutes);

      timeFrame += `${minutes}${shortenCountdown ? 'm' : '  minute'}${
        minutes === 1 || shortenCountdown ? '' : 's'
      }`;
    }

    const opacity = Math.max(50, 100 - (untilAiring / 60 / 60 / 24 / 7) * 50);
    const nextEpisode =
      anime.nextAiringEpisode?.nativeAiringAt &&
      !upcoming &&
      anime.nextAiringEpisode.nativeAiringAt < Date.now() / 1000 + 1 * 24 * 60 * 60
        ? anime.nextAiringEpisode.episode - 1
        : anime.nextAiringEpisode?.episode || 0;
    const dateString =
      new Date(airingAt ? airingAt * 1000 : 0).toLocaleDateString([], {
        weekday: 'long',
        year: 'numeric',
        month: 'long',
        day: 'numeric'
      }) +
      ' ' +
      time;

    if (upcoming)
      return `<span title="${dateString}" style="opacity: ${opacity}%;">${nextEpisode}${totalEpisodes(
        anime
      )} in ${timeFrame} <span class="opaque">${
        few && get(settings).displayCoverModeAnime ? '<br>' : ''
      }${few ? `(${time})` : ''}</span></span>`;
    else
      return `<span title="${dateString}" style="opacity: ${opacity}%;">${nextEpisode} in ${
        few && get(settings).displayCoverModeAnime ? '<br>' : ''
      }${few ? '<b>' : ''}${timeFrame}${few ? '</b>' : ''} ${few ? `(${time})` : ''}</span>`;
  }

  return '';
};