IMDb - Show Digital Release Date

Displays the digital release date for movies and TV shows on IMDb
Bezoek de website van de maker, stel een vraag, plaats een beoordeling of rapporteer dit script.
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// ==UserScript==

// @name                IMDb - Show Digital Release Date
// @description         Displays the digital release date for movies and TV shows on IMDb
// @version             1.1

// @namespace           io.github.ni554n
// @match               https://www.imdb.com/title/tt*
// @match               https://m.imdb.com/title/tt*
// @run-at              document-idle
// @grant               GM_xmlhttpRequest

// @supportURL          https://github.com/ni554n/userscripts/issues
// @license             MIT

// @author              Nissan Ahmed
// @homepageURL         https://anissan.com
// @contributionURL     https://paypal.me/ni554n

// ==/UserScript==

const imdbId = document.querySelector(
  `meta[property="imdb:pageConst"]`,
)?.content;

if (!imdbId) throw new Error("Failed to find IMDb ID on the page");

requestTmdb(
  `https://api.themoviedb.org/3/find/${imdbId}?external_source=imdb_id`,
  (response) => {
    if (response.response.tv_results.length !== 0) {
      addReleaseDateInfo(response.response.tv_results[0].first_air_date);
      return;
    }

    if (response.response.movie_results.length !== 0) {
      const tmdbId = response.response.movie_results[0].id;

      requestTmdb(
        `https://api.themoviedb.org/3/movie/${tmdbId}/release_dates`,
        (response) => {
          let earliestReleaseDate;

          // https://developer.themoviedb.org/reference/movie-release-dates
          for (const obj of response.response.results) {
            for (const date of obj.release_dates) {
              if (date.type !== 4) continue;

              const releaseDate = new Date(date.release_date);

              if (earliestReleaseDate === undefined) {
                earliestReleaseDate = releaseDate;
              } else if (releaseDate < earliestReleaseDate) {
                earliestReleaseDate = date.release_date;
              }
            }
          }

          addReleaseDateInfo(earliestReleaseDate);
        },
      );
    }
  },
);

/**
 * @param { string | Date } releaseDate
 */
function addReleaseDateInfo(releaseDate) {
  const subtitleElement = document.querySelector(
    `h1[data-testid="hero__pageTitle"]`,
  )?.parentElement?.lastElementChild;

  const releasedNode = subtitleElement?.lastElementChild?.cloneNode();
  if (!releasedNode) {
    console.error(
      "Failed to create a suitable element to add the release date in IMDb webpage.",
    );
    return;
  }

  if (releaseDate) {
    releasedNode.textContent = `🖥️ ${getRelativeTime(releaseDate)}`;
    releasedNode.title = `Digital release on ${releaseDate.toString()}`;
  } else {
    releasedNode.textContent = "🖥️ Unknown";
    releasedNode.title = "Digital release date not found";
  }

  subtitleElement?.appendChild(releasedNode);
}

/**
 * @param { string } url
 * @param { (response: object) => void } onload
 */
function requestTmdb(url, onload) {
  // Request the release date with TMDb ID
  GM_xmlhttpRequest({
    method: "GET",
    url,
    headers: {
      accept: "application/json",
      Authorization: `Bearer ${atob("ZXlKaGJHY2lPaUpJVXpJMU5pSjkuZXlKaGRXUWlPaUl4Wm1FelpETTFaR1l4TVdOak9HRmpNR1F6WVRsaU5qaGtZVGt4WTJZeVpTSXNJbk4xWWlJNklqWTBZbUU0TUdSa01URXpPRFpqTURCallXWTRNelE1TlNJc0luTmpiM0JsY3lJNld5SmhjR2xmY21WaFpDSmRMQ0oyWlhKemFXOXVJam94ZlEuUXNTVlFIWlhYSE1fYlpMZGs3dHo5ck5CSzFYVGpuc1FSS2dCLU92aUdrWQ==")}`,
    },
    responseType: "json",
    onload,
    onerror: console.error,
  });
}

/**
 * Formats date relatively such as "6 months ago", "1 week ago", "in 2 months".
 *
 * @param { string | Date } date
 * @returns { string }
 */
function getRelativeTime(date) {
  if (!(date instanceof Date)) date = new Date(date);
  if (isNaN(date)) throw new Error(`Invalid date: ${date}`);

  const timeFormatter = new Intl.RelativeTimeFormat();

  const diffMilliSeconds = date - new Date();
  const diffSeconds = Math.round(diffMilliSeconds / 1000);

  if (Math.abs(diffSeconds) < 60) {
    return timeFormatter.format(diffSeconds, "second");
  }

  const diffMinutes = Math.round(diffSeconds / 60);

  if (Math.abs(diffMinutes) < 60) {
    return timeFormatter.format(diffMinutes, "minute");
  }

  const diffHours = Math.round(diffMinutes / 60);

  if (Math.abs(diffHours) < 24) {
    return timeFormatter.format(diffHours, "hour");
  }

  const diffDays = Math.round(diffHours / 24);
  const diffDaysAbs = Math.abs(diffDays);

  if (diffDaysAbs < 7) {
    return timeFormatter.format(diffDays, "day");
  }

  if (diffDaysAbs < 30) {
    return timeFormatter.format(Math.round(diffDays / 7), "week");
  }

  if (diffDaysAbs < 365) {
    return timeFormatter.format(Math.round(diffDays / 30), "month");
  }

  return timeFormatter.format(Math.round(diffDays / 365), "year");
}