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Adds a button to YouTube watch pages to easily tweet a comment with the video link.
// ==UserScript==
// @name YouTube Comment to Twitter
// @namespace http://tampermonkey.net/
// @version 1.3
// @description Adds a button to YouTube watch pages to easily tweet a comment with the video link.
// @author torch
// @match *://www.youtube.com/watch*
// @grant GM_addStyle
// @grant GM_setValue
// @grant GM_getValue
// @run-at document-end
// @license MIT
// ==/UserScript==
(function() {
'use_strict';
// --- Configuration ---
const BUTTON_TEXT = "🐦 Твитнуть комментарий";
const POPUP_TITLE = "Написать твит о видео";
const TWITTER_MAX_LENGTH = 280; // Standard Twitter limit
const TWITTER_URL_LENGTH = 23; // Standard length consumed by a t.co URL
// --- Styles ---
GM_addStyle(`
#yt-comment-to-twitter-btn {
background-color: #1DA1F2;
color: white;
border: none;
padding: 8px 12px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 14px;
margin: 4px 2px;
cursor: pointer;
border-radius: 20px;
font-weight: bold;
}
#yt-comment-to-twitter-btn:hover {
background-color: #0c85d0;
}
.twitter-popup-overlay {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: rgba(0, 0, 0, 0.5);
z-index: 9998;
display: flex;
justify-content: center;
align-items: center;
}
.twitter-popup-content {
background-color: #1e1e1e; /* Darker theme for YouTube dark mode */
color: #e0e0e0;
padding: 20px;
border-radius: 8px;
box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
width: 400px;
max-width: 90%;
z-index: 9999;
}
.twitter-popup-content h3 {
margin-top: 0;
color: #1DA1F2;
}
.twitter-popup-content textarea {
width: calc(100% - 20px);
height: 100px;
margin-bottom: 10px;
padding: 10px;
border: 1px solid #555;
border-radius: 4px;
background-color: #2a2a2a;
color: #e0e0e0;
resize: vertical;
}
.twitter-popup-content .char-counter {
text-align: right;
font-size: 0.9em;
color: #aaa;
margin-bottom: 10px;
}
.twitter-popup-content button {
padding: 10px 15px;
border: none;
border-radius: 4px;
cursor: pointer;
font-weight: bold;
margin-right: 10px;
}
.twitter-popup-content .tweet-btn {
background-color: #1DA1F2;
color: white;
}
.twitter-popup-content .tweet-btn:hover {
background-color: #0c85d0;
}
.twitter-popup-content .cancel-btn {
background-color: #555;
color: white;
}
.twitter-popup-content .cancel-btn:hover {
background-color: #777;
}
`);
let popupOverlay = null;
// getVideoTitle is not needed for the tweet content anymore, but kept in case it's useful for other features later.
// function getVideoTitle() {
// const titleElement = document.querySelector('h1.ytd-video-primary-info-renderer yt-formatted-string, h1.title.ytd-video-primary-info-renderer');
// return titleElement ? titleElement.textContent.trim() : "YouTube Video";
// }
function getVideoUrl() {
return window.location.href;
}
function createPopup() {
if (popupOverlay) {
popupOverlay.style.display = 'flex'; // Show if already created
if (popupOverlay.querySelector('textarea')) {
popupOverlay.querySelector('textarea').focus();
}
return;
}
popupOverlay = document.createElement('div');
popupOverlay.className = 'twitter-popup-overlay';
popupOverlay.onclick = function(e) {
if (e.target === popupOverlay) {
closePopup();
}
};
const popupContent = document.createElement('div');
popupContent.className = 'twitter-popup-content';
const title = document.createElement('h3');
title.textContent = POPUP_TITLE;
const textarea = document.createElement('textarea');
textarea.placeholder = "Ваш комментарий...";
const charCounter = document.createElement('div');
charCounter.className = 'char-counter';
const updateCharCounter = () => {
// The tweet will consist of the comment, a space, and the URL.
// Twitter uses t.co to shorten URLs, which takes up a fixed number of characters.
const lengthOfComment = textarea.value.length;
const lengthOfSpaceAndUrl = (lengthOfComment > 0 ? 1 : 0) + TWITTER_URL_LENGTH; // Add space only if comment exists
const remaining = TWITTER_MAX_LENGTH - lengthOfComment - lengthOfSpaceAndUrl;
charCounter.textContent = `${remaining} символов осталось`;
charCounter.style.color = remaining < 0 ? 'red' : '#aaa';
};
textarea.addEventListener('input', updateCharCounter);
const tweetButton = document.createElement('button');
tweetButton.textContent = "Твитнуть";
tweetButton.className = 'tweet-btn';
tweetButton.onclick = function() {
const comment = textarea.value.trim();
// Comment can be empty, in which case only the URL is tweeted via the 'url' parameter.
// Twitter usually pre-fills the text field with the URL if the text parameter is empty.
const videoUrl = getVideoUrl();
// Construct tweet text: only the comment.
// The videoUrl will be passed in the 'url' parameter of the Twitter intent.
// Twitter will append the URL to the comment text.
let tweetText = comment;
const twitterIntentUrl = `https://twitter.com/intent/tweet?text=${encodeURIComponent(tweetText)}&url=${encodeURIComponent(videoUrl)}`;
window.open(twitterIntentUrl, '_blank');
closePopup();
};
const cancelButton = document.createElement('button');
cancelButton.textContent = "Отмена";
cancelButton.className = 'cancel-btn';
cancelButton.onclick = closePopup;
popupContent.appendChild(title);
popupContent.appendChild(textarea);
popupContent.appendChild(charCounter);
popupContent.appendChild(tweetButton);
popupContent.appendChild(cancelButton);
popupOverlay.appendChild(popupContent);
document.body.appendChild(popupOverlay);
// Initialize counter
updateCharCounter();
textarea.focus();
}
function closePopup() {
if (popupOverlay) {
// Clear textarea for next time
const textarea = popupOverlay.querySelector('textarea');
if (textarea) {
textarea.value = '';
}
popupOverlay.style.display = 'none';
}
}
function addButton() {
// More robust selectors for YouTube's dynamic layout
const commonActionSelectors = [
'#actions-inner #menu', // Older layout under video
'#menu-container.ytd-watch-metadata', // Older layout alternative
'ytd-video-actions #actions', // Newer layout for like/dislike etc.
'#actions.ytd-watch-flexy' // Common actions row
];
const fallbackSelectors = [
'#info-contents #top-row.ytd-watch-info-text',
'#meta-contents #info-contents',
'#meta-contents #info',
'#owner #subscribe-button' // As a last resort, place it near subscribe
];
let actionsContainer = null;
for (const selector of commonActionSelectors) {
actionsContainer = document.querySelector(selector);
if (actionsContainer) break;
}
if (!actionsContainer) {
for (const selector of fallbackSelectors) {
actionsContainer = document.querySelector(selector);
if (actionsContainer) break;
}
}
if (actionsContainer) {
if (actionsContainer.querySelector('#yt-comment-to-twitter-btn')) {
return; // Button already exists
}
const twitterButton = document.createElement('button');
twitterButton.id = 'yt-comment-to-twitter-btn';
twitterButton.textContent = BUTTON_TEXT;
twitterButton.onclick = createPopup;
// Attempt to insert it in a reasonable place
if (actionsContainer.id === 'actions' && actionsContainer.parentElement?.tagName === 'YTD-VIDEO-ACTIONS') {
// Preferred: Add next to like/share buttons
actionsContainer.insertBefore(twitterButton, actionsContainer.children[Math.min(2, actionsContainer.children.length)]);
} else if (actionsContainer.firstChild) {
actionsContainer.insertBefore(twitterButton, actionsContainer.firstChild.nextSibling);
} else {
actionsContainer.appendChild(twitterButton);
}
// console.log("YouTube Comment to Twitter button added to:", actionsContainer);
} else {
// console.warn("Could not find a suitable container for the Twitter button after multiple attempts.");
}
}
// YouTube uses dynamic loading, so we need to observe DOM changes
function observeDOM() {
const targetNode = document.body;
const config = { childList: true, subtree: true };
let lastPathname = window.location.pathname;
let debounceTimer;
const handleMutation = () => {
// Try to add the button if it's not there
if (!document.querySelector('#yt-comment-to-twitter-btn')) {
addButton();
}
};
const callback = function(mutationsList, observer) {
// Check if navigation has happened to a new watch page
if (window.location.pathname !== lastPathname && window.location.pathname.includes("/watch")) {
lastPathname = window.location.pathname;
// Wait a bit for the new page to load elements
clearTimeout(debounceTimer);
debounceTimer = setTimeout(handleMutation, 1000);
return;
}
// General check for dynamic content loading on the current page
for (const mutation of mutationsList) {
if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
// Check if a potential container is now available
if (document.querySelector('#actions-inner #menu, #menu-container.ytd-watch-metadata, ytd-video-actions #actions, #actions.ytd-watch-flexy') && !document.querySelector('#yt-comment-to-twitter-btn')) {
clearTimeout(debounceTimer);
debounceTimer = setTimeout(handleMutation, 300); // Debounce to avoid multiple rapid adds
break;
}
}
}
};
const observer = new MutationObserver(callback);
observer.observe(targetNode, config);
// Initial attempt in case the element is already there
if (window.location.pathname.includes("/watch")) {
setTimeout(addButton, 1000); // Initial delay for page load
}
}
// Make sure the script runs after the page is mostly loaded
if (document.readyState === "complete" || document.readyState === "interactive") {
observeDOM();
} else {
window.addEventListener('DOMContentLoaded', observeDOM);
}
})();