// ==UserScript==
// @name Youtube auto like
// @namespace http://tampermonkey.net/
// @version 2
// @description Automatically like the video
// @author You
// @match https://www.youtube.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant none
// ==/UserScript==
(function() {
'use strict';
const LIKE_DELAY = 30; // 幾秒後觸發
const LIKE_MODE = "s"; // "s"=只要逗留就讚, "p"=時間到還在播放才讚
let lastUrl = null;
let currentTimer = null;
let titleObserver = null;
let videoObserver = null;
function runMyScript() {
const video = document.querySelector("video.html5-main-video");
const currentUrl = window.location.href;
if (!currentUrl.includes('watch?v=')) {
return;
}
if (currentUrl === lastUrl) {
return;
}
lastUrl = currentUrl;
if (currentTimer) {
clearTimeout(currentTimer);
currentTimer = null;
}
if (!video) {
return;
}
if (LIKE_MODE === "s") {
currentTimer = setTimeout(() => {
triggerLikeButton();
currentTimer = null;
}, LIKE_DELAY * 1000);
} else if (LIKE_MODE === "p") {
const checkPlayTime = () => {
const currentVideo = document.querySelector("video.html5-main-video");
if (!currentVideo) {
currentTimer = null;
return;
}
if (!currentVideo.paused && !currentVideo.ended) {
if (currentVideo.currentTime >= LIKE_DELAY) {
triggerLikeButton();
currentTimer = null;
return;
}
}
currentTimer = setTimeout(checkPlayTime, 1000);
};
checkPlayTime();
}
}
function triggerLikeButton() {
if (document.activeElement.tagName.toLowerCase() === 'input' ||
document.activeElement.tagName.toLowerCase() === 'textarea' ||
document.activeElement.isContentEditable) {
return;
}
setTimeout(() => {
const likeSection = document.querySelector('ytd-segmented-like-dislike-button-renderer');
if (likeSection) {
const likeButton = likeSection.querySelector('button:first-child');
if (likeButton) {
const isLiked = likeButton.getAttribute('aria-pressed') === 'true';
if (isLiked) {
showMsg('已按過讚', false);
return;
}
const event = new MouseEvent('click', {
bubbles: true,
cancelable: true,
view: window
});
likeButton.dispatchEvent(event);
showMsg('自動按讚', true);
return;
}
}
const selectors = [
'button[title*="喜歡"], button[aria-label*="喜歡"], button[aria-label*="like"]',
'yt-button-shape button[aria-pressed="false"]',
'#segmented-like-button button'
];
for (let selector of selectors) {
const button = document.querySelector(selector);
if (button) {
const isLiked = button.getAttribute('aria-pressed') === 'true';
if (isLiked) {
showMsg('已按過讚', false);
return;
}
const event = new MouseEvent('click', {
bubbles: true,
cancelable: true,
view: window
});
button.dispatchEvent(event);
showMsg('自動按讚', true);
return;
}
}
showMsg('找不到按讚按鈕', false);
}, 100);
}
function showMsg(text, isSuccess = true) {
const msg = document.createElement('div');
msg.textContent = text;
Object.assign(msg.style, {
position: 'fixed',
left: '50%',
transform: 'translateX(-50%)',
top: isSuccess ? '70%' : '30%',
padding: '10px 20px',
background: isSuccess ? 'rgba(76, 175, 80, 0.9)' : 'rgba(255, 152, 0, 0.9)',
color: '#fff',
borderRadius: '8px',
zIndex: 9999,
fontSize: '16px',
opacity: '0',
transition: 'opacity 0.3s',
pointerEvents: 'none',
fontWeight: 'bold',
textShadow: '1px 1px 2px rgba(0,0,0,0.5)'
});
document.body.appendChild(msg);
setTimeout(() => { msg.style.opacity = '1'; }, 10);
setTimeout(() => {
msg.style.opacity = '0';
setTimeout(() => {
if (document.body.contains(msg)) {
document.body.removeChild(msg);
}
}, 300);
}, 2500);
}
function startPageObserver() {
const titleEl = document.querySelector("title");
if (!titleEl) {
return;
}
if (titleObserver) {
titleObserver.disconnect();
}
titleObserver = new MutationObserver(() => {
runMyScript();
});
titleObserver.observe(titleEl, {
childList: true
});
}
function startVideoObserver() {
const video = document.querySelector("video.html5-main-video");
if (!video) {
setTimeout(startVideoObserver, 2000);
return;
}
if (videoObserver) {
videoObserver.disconnect();
}
videoObserver = new MutationObserver((mutationsList) => {
for (const mutation of mutationsList) {
if (mutation.type === 'attributes' && mutation.attributeName === 'src') {
runMyScript();
}
}
});
videoObserver.observe(video, {
attributes: true,
attributeFilter: ['src']
});
video.addEventListener('loadstart', () => {
runMyScript();
});
}
function listenToUrlChanges() {
let currentUrl = location.href;
const observer = new MutationObserver(() => {
if (location.href !== currentUrl) {
currentUrl = location.href;
setTimeout(runMyScript, 500);
}
});
observer.observe(document, {
subtree: true,
childList: true
});
}
function init() {
runMyScript();
startPageObserver();
startVideoObserver();
listenToUrlChanges();
}
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
window.addEventListener('beforeunload', () => {
if (currentTimer) {
clearTimeout(currentTimer);
}
if (titleObserver) {
titleObserver.disconnect();
}
if (videoObserver) {
videoObserver.disconnect();
}
});
})();
