Supplementary Watcher

Add video players for supplementary movie files on Science and Nature articles.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Supplementary Watcher
// @namespace    http://tampermonkey.net/
// @version      2025-12-09
// @description  Add video players for supplementary movie files on Science and Nature articles.
// @author       RebelPotato
// @match        https://www.science.org/doi/*
// @match        https://www.nature.com/articles/*
// @grant        none
// @run-at       document-end
// @license      Unlicense
// ==/UserScript==
// This is free and unencumbered software released into the public domain.
// For more information, please refer to <https://unlicense.org/>

class VideoPlayerWrapper extends HTMLElement {
  constructor() {
    super();
    this.attachShadow({ mode: "open" });
  }
  connectedCallback() {
    this.render();
    this.shadowRoot
      .querySelector("button")
      .addEventListener("click", () => this.reload());
  }
  render() {
    this.shadowRoot.innerHTML = `
      <style>
        :host{display:block;margin-top:10px}
        .container{border:1px solid #ddd;border-radius:4px;padding:10px;background:#f9f9f9}
        button{background:#007bff;color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer;margin-bottom:10px;font-size:14px}
        button:hover{background:#0056b3}
        video{width:100%;max-width:800px;border-radius:4px;background:#000;display:block}
      </style>
      <div class="container">
        <button>🔄 Reload Video</button>
        <video controls src="${this.getAttribute("src")}"></video>
      </div>
    `;
  }
  reload() {
    const video = this.shadowRoot.querySelector("video");
    const src = video.src;
    video.src = "";
    video.load();
    setTimeout(() => {
      video.src = src;
      video.load();
    }, 100);
  }
}

const names = ["movie", "video"];
const has_video_name = (url) =>
  names.some((name) => url.toLowerCase().includes(name));
const suffixes = [".mp4", ".mov", ".avi", ".wmv", ".flv", ".mkv"];
const has_video_suffix = (url) => suffixes.some((suf) => url.endsWith(suf));

function collectNature(acc) {
  const items = document.querySelectorAll(".c-article-supplementary__item");
  items.forEach((item) => {
    const link = item.querySelector("a");
    if (
      link &&
      (has_video_name(link.dataset.trackLabel) || has_video_suffix(link.href))
    ) {
      acc.push({ item, src: link.href });
    }
  });
}

function collectScience(acc) {
  const items = document.querySelectorAll(".core-supplementary-material");
  items.forEach((item) => {
    const filename = item.querySelector(".core-filename");
    if (
      filename &&
      (has_video_name(filename.textContent) ||
        has_video_suffix(filename.textContent.slice(0, -1)))
    ) {
      const link = item.querySelector("a");
      if (link) acc.push({ item, src: link.href });
    }
  });
}

(function () {
  console.log("Supplementary movie watcher script running...");
  if (!customElements.get("video-player-wrapper")) {
    customElements.define("video-player-wrapper", VideoPlayerWrapper);
  }

  const acc = [];
  collectNature(acc);
  collectScience(acc);
  let count = 0;

  acc.forEach(({ item, src }) => {
    if (item.querySelector("video-player-wrapper")) return;
    const wrapper = document.createElement("video-player-wrapper");
    wrapper.setAttribute("src", src);
    item.appendChild(wrapper);
    count++;
  });

  console.log(`Added ${count} video player(s) to the page`);
})();