iOS Video Force Inline Playback

Force all iOS web videos to play inline using playsinline attribute.
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// ==UserScript==
// @name         iOS Video Force Inline Playback
// @name:zh-CN   iOS 网页视频强制内嵌播放
// @namespace    https://greasyfork.org/users/1603433
// @version      1.4
// @description  Force all iOS web videos to play inline using playsinline attribute.
// @description:zh-CN 强制所有 iOS 网页视频使用 playsinline 内嵌播放
// @author       Dason
// @license      MIT
// @match        *://*/*
// @run-at       document-start
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // 核心处理函数：强注内嵌属性
    function forceInline(video) {
        if (!video || video.dataset.inlineForced) return;

        video.playsInline = true;
        video.webkitPlaysInline = true;
        
        video.setAttribute('playsinline', 'true');
        video.setAttribute('webkit-playsinline', 'true');
        video.setAttribute('x5-playsinline', 'true'); 
        
        video.dataset.inlineForced = 'true';
    }

    // ================= 原型链劫持 =================
    try {
        // 劫持 play 方法：确保那些通过 JS 动态创建、还没放入 DOM 树就直接播放的视频被注入 playsinline
        const originalPlay = HTMLVideoElement.prototype.play;
        HTMLVideoElement.prototype.play = function() {
            forceInline(this);
            return originalPlay.apply(this, arguments);
        };
    } catch (e) {
        console.error("[InlineVideo] Prototype hijack failed: ", e);
    }

    // ================= DOM 监听 =================
    const observer = new MutationObserver((mutations) => {
        for (const mutation of mutations) {
            mutation.addedNodes.forEach((node) => {
                if (node.tagName === 'VIDEO') {
                    forceInline(node);
                } else if (node.querySelectorAll) {
                    const videos = node.querySelectorAll('video');
                    if (videos.length > 0) videos.forEach(forceInline);
                }
            });
        }
    });

    if (document.documentElement) {
        observer.observe(document.documentElement, { childList: true, subtree: true });
    } else {
        document.addEventListener('DOMContentLoaded', () => {
            observer.observe(document.body, { childList: true, subtree: true });
        });
    }

    // ================= 定时器兜底 =================
    setInterval(() => {
        document.querySelectorAll('video').forEach(forceInline);
    }, 2000);
})();