// ==UserScript== 
// @name         破解网页禁用右键下载视频 
// @namespace    https://www.cnblogs.com/05-hust/p/17428290.html 
// @version      1.6.2 
// @description  优化网络请求，支持重试和备用域名，解决连接超时问题；添加导出地址功能
// @author       you 
// @match        https://aguea.net/*
// @grant        GM_xmlhttpRequest 
// @grant        GM_download 
// @grant        GM_setClipboard 
// @connect      video.twimg.com 
// @connect      venexa.site 
// @connect      * 
// @run-at       document-start 
// @license      All Rights Reserved
// ==/UserScript== 

(function () { 
    'use strict'; 

    /* ============ 1. 事件层：劫持 addEventListener 与 on* 属性 ============ */ 
    const HOOK_EVENTS = ['contextmenu', 'selectstart', 'copy', 'cut', 'paste', 'dragstart', 'keydown', 'mousedown']; 
    const _add = EventTarget.prototype.addEventListener; 
    EventTarget.prototype.addEventListener = function (type, listener, options) { 
        if (HOOK_EVENTS.indexOf(type) >= 0) return; 
        return _add.call(this, type, listener, options); 
    }; 
    
    const _preventDefault = Event.prototype.preventDefault; 
    Event.prototype.preventDefault = function () { 
        if (this && HOOK_EVENTS.indexOf(this.type) >= 0) return; 
        return _preventDefault.call(this); 
    }; 
    
    function clearInlineHandlers(root) { 
        const all = (root || document).querySelectorAll('*'); 
        all.forEach(el => { 
            HOOK_EVENTS.forEach(ev => { 
                if (el['on' + ev] !== null) el['on' + ev] = null; 
            }); 
        }); 
        ['oncontextmenu', 'onselectstart', 'oncopy', 'onkeydown'].forEach(k => { 
            try { 
                document[k] = null; 
                document.body && (document.body[k] = null); 
            } catch (e) {} 
        }); 
    } 

    /* ============ 2. 属性层：移除 controlsList=nodownload 等 ============ */ 
    function unlockVideos(root) { 
        const videos = (root || document).querySelectorAll('video'); 
        videos.forEach(v => { 
            v.removeAttribute('controlslist'); 
            v.removeAttribute('controlsList'); 
            v.setAttribute('controls', 'controls'); 
            v.oncontextmenu = null; 
            const wrap = v.parentElement; 
            if (wrap) { 
                wrap.style.pointerEvents = ''; 
                wrap.querySelectorAll('[oncontextmenu]').forEach(n => n.removeAttribute('oncontextmenu')); 
            } 
            injectDownloadButton(v); 
        }); 
    } 

    /* ============ 3. UI 层：注入「复制视频地址」按钮 ============ */ 
    function injectDownloadButton(video) { 
        if (video.dataset.dlInjected === '1') return; 
        video.dataset.dlInjected = '1'; 
        const btn = document.createElement('button'); 
        btn.textContent = '📋 复制视频地址'; 
        Object.assign(btn.style, { 
            position: 'absolute', 
            right: '12px', 
            top: '12px', 
            zIndex: 2147483647, 
            padding: '6px 12px', 
            background: 'rgba(0,0,0,.7)', 
            color: '#fff', 
            border: '1px solid #fff', 
            borderRadius: '4px', 
            cursor: 'pointer', 
            fontSize: '12px' 
        }); 
        btn.addEventListener('click', (e) => { 
            e.preventDefault(); 
            e.stopPropagation(); 
            handleVideoCopy(video, btn); 
        }, true); 
        if (getComputedStyle(video.parentElement).position === 'static') { 
            video.parentElement.style.position = 'relative'; 
        } 
        video.parentElement.appendChild(btn); 
    } 

    // 获取视频真实地址 
    function getVideoUrl(video) { 
        if (video.dataset.url) return video.dataset.url; 
        if (video.currentSrc && !video.currentSrc.startsWith('blob:')) return video.currentSrc; 
        if (video.src && !video.src.startsWith('blob:')) return video.src; 
        const source = video.querySelector('source[src]'); 
        return source ? source.src : ''; 
    } 

    // 核心逻辑：处理地址复制
    async function handleVideoCopy(video, btn) { 
        let url = getVideoUrl(video); 
        if (!url) { 
            alert('未找到视频地址，可能尚未加载或加密严重。'); 
            return; 
        } 

        if (url.startsWith('blob:')) { 
            alert('当前视频为 Blob 流媒体，无法直接获取真实文件地址，请使用外部抓包工具获取。'); 
            return; 
        }

        // 构造备用镜像地址
        const mirrorUrl = url.includes('https://video.twimg.com') 
            ? url.replace('https://video.twimg.com', 'https://venexa.site') 
            : '无';

        const textToCopy = `真实地址:\n${url}\n\n备用镜像地址:\n${mirrorUrl}`; 
        
        if (typeof GM_setClipboard === 'function') { 
            GM_setClipboard(textToCopy); 
            btn.textContent = '✅ 地址已复制'; 
            setTimeout(() => { 
                btn.textContent = '📋 复制视频地址'; 
            }, 2000); 
        } else {
            // 降级方案
            const textarea = document.createElement('textarea');
            textarea.value = textToCopy;
            document.body.appendChild(textarea);
            textarea.select();
            try {
                document.execCommand('copy');
                btn.textContent = '✅ 地址已复制';
                setTimeout(() => { 
                    btn.textContent = '📋 复制视频地址'; 
                }, 2000); 
            } catch (err) {
                alert('无法复制到剪贴板，请手动复制：\n' + textToCopy);
            }
            document.body.removeChild(textarea);
        }
    }

    /* ============ 4. 新增：导出地址功能 ============ */
    function injectExportButtons() {
        if (document.getElementById('video-export-buttons')) return;
        
        const exportContainer = document.createElement('div');
        exportContainer.id = 'video-export-buttons';
        exportContainer.style.cssText = `
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 2147483647;
            display: flex;
            flex-direction: column;
            gap: 10px;
        `;
        
        // 真实地址导出按钮
        const realUrlBtn = document.createElement('button');
        realUrlBtn.textContent = '📄 导出真实地址';
        realUrlBtn.style.cssText = `
            padding: 10px 15px;
            background: #4285f4;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        `;
        realUrlBtn.addEventListener('click', exportRealUrls);
        
        // 备用镜像地址导出按钮
        const mirrorUrlBtn = document.createElement('button');
        mirrorUrlBtn.textContent = '📄 导出镜像地址';
        mirrorUrlBtn.style.cssText = `
            padding: 10px 15px;
            background: #34a853;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        `;
        mirrorUrlBtn.addEventListener('click', exportMirrorUrls);
        
        exportContainer.appendChild(realUrlBtn);
        exportContainer.appendChild(mirrorUrlBtn);
        document.body.appendChild(exportContainer);
    }

    // 导出真实地址
    function exportRealUrls() {
        const videos = document.querySelectorAll('video');
        const realUrls = [];
        
        videos.forEach(video => {
            const url = getVideoUrl(video);
            if (url && !url.startsWith('blob:')) {
                realUrls.push(url.trim());
            }
        });
        
        if (realUrls.length === 0) {
            alert('未找到可导出的真实地址');
            return;
        }
        
        const content = generateTxtContent(realUrls);
        downloadTxtFile(content, 'real_video_urls.txt');
    }

    // 导出镜像地址
    function exportMirrorUrls() {
        const videos = document.querySelectorAll('video');
        const mirrorUrls = [];
        
        videos.forEach(video => {
            const url = getVideoUrl(video);
            if (url && !url.startsWith('blob:')) {
                const mirrorUrl = url.includes('https://video.twimg.com') 
                    ? url.replace('https://video.twimg.com', 'https://venexa.site') 
                    : '无有效镜像地址';
                mirrorUrls.push(mirrorUrl.trim());
            }
        });
        
        if (mirrorUrls.length === 0) {
            alert('未找到可导出的镜像地址');
            return;
        }
        
        const content = generateTxtContent(mirrorUrls);
        downloadTxtFile(content, 'mirror_video_urls.txt');
    }

    // 生成txt文件内容
    function generateTxtContent(urls) {
        const timestamp = new Date().toLocaleString();
        let content = `# 视频地址列表\n# 导出时间: ${timestamp}\n# 总数: ${urls.length}\n\n`;
        
        urls.forEach((url, index) => {
            content += `${url}\n`;
        });
        
        return content;
    }

    // 下载txt文件
    function downloadTxtFile(content, filename) {
        const blob = new Blob([content], { type: 'text/plain;charset=utf-8' });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = filename;
        document.body.appendChild(a);
        a.click();
        document.body.removeChild(a);
        URL.revokeObjectURL(url);
        
        alert(`已导出 ${filename}，共 ${content.split('\n').length - 3} 个地址`);
    }

    /* ============ 5. CSS：还原被隐藏的原生下载按钮 ============ */ 
    const css = ` 
    video::-internal-media-controls-download-button { display: initial !important; } 
    video::-webkit-media-controls-enclosure { overflow: visible !important; } 
    video::-webkit-media-controls-panel { width: 100% !important; } 
    * { -webkit-user-select: text !important; user-select: text !important; } 
    `; 
    const style = document.createElement('style'); 
    style.textContent = css; 
    (document.head || document.documentElement).appendChild(style); 

    /* ============ 6. 主流程与动态监听 ============ */ 
    function run() { 
        try { clearInlineHandlers(document); } catch (e) {} 
        try { unlockVideos(document); } catch (e) {} 
        try { injectExportButtons(); } catch (e) {} 
    } 
    
    if (document.body) run(); 
    else document.addEventListener('DOMContentLoaded', run); 

    const mo = new MutationObserver(muts => { 
        for (const m of muts) { 
            for (const node of m.addedNodes) { 
                if (node.nodeType !== 1) continue; 
                if (node.tagName === 'VIDEO') { 
                    unlockVideos(node.parentElement); 
                } else if (node.querySelector && node.querySelector('video')) { 
                    unlockVideos(node); 
                } 
            } 
        } 
    }); 
    mo.observe(document.documentElement, { childList: true, subtree: true }); 

    let lastURL = location.href; 
    setInterval(() => { 
        if (location.href !== lastURL) { 
            lastURL = location.href; 
            setTimeout(run, 800); 
        } 
    }, 1000); 
})();