Auto-press Skip Buttons on Plex

auto-buttons.js

// ==UserScript==
// @name         Trigger on Skip Forward Button Click by Adjusting Video Time
// @version      1.2
// @description  Adjust video time when the Skip Forward button is clicked in the Plex player, even across episodes or media changes.
// @author       James Turnbull
// @match        *://*/*
// @grant        none
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    function attachListener(skipForwardButton, video) {
        if (!skipForwardButton || !video) return;

        // Ensure no duplicate listeners
        skipForwardButton.removeEventListener('click', handleSkipForward);

        skipForwardButton.addEventListener('click', handleSkipForward);

        console.log('Event listener attached to Skip Forward button.');

        function handleSkipForward() {
            setTimeout(() => {
                if (video.readyState >= 1) { // HAVE_METADATA
                    const newTime = Math.max(video.currentTime - 20, 0);
                    console.log(`Adjusting video time from ${video.currentTime} to ${newTime}`);
                    video.currentTime = newTime;
                } else {
                    console.log('Video not ready; skipping adjustment.');
                }
            }, 0);
        }
    }

    function observeDOM() {
        const observer = new MutationObserver(() => {
            const skipForwardButton = document.querySelector('[aria-label="Skip Forward 30 Seconds"], [title="Skip Forward 30 Seconds"]');
            const video = document.querySelector('video');

            if (skipForwardButton && video) {
                attachListener(skipForwardButton, video);
            }
        });

        observer.observe(document.body, { childList: true, subtree: true });

        console.log('Observing DOM for changes...');
    }

    // Initialize the observer
    observeDOM();
})();