// ==UserScript==
// @name         网易云音乐灰色歌曲一键导出 (纯净版)
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  在网易云右下角添加红色悬浮按钮，一键导出变灰歌曲（仅歌名和歌手）为 CSV 表格。
// @author       Gemini
// @license      MIT
// @match        *://music.163.com/*
// @grant        none
// @icon https://s1.music.126.net/style/favicon.ico
// ==/UserScript==

(function() {
    'use strict';

    if (window !== window.top) return;

    // 1. 创建悬浮按钮
    const btn = document.createElement('button');
    btn.innerHTML = '📥 导出灰色歌曲';
    btn.style.cssText = `
        position: fixed;
        bottom: 30px;
        right: 30px;
        z-index: 99999;
        padding: 12px 20px;
        background-color: #d33a31;
        color: white;
        border: none;
        border-radius: 8px;
        font-size: 14px;
        font-weight: bold;
        cursor: pointer;
        box-shadow: 0 4px 6px rgba(0,0,0,0.3);
        transition: background-color 0.2s;
    `;
    
    btn.onmouseover = () => btn.style.backgroundColor = '#c23028';
    btn.onmouseout = () => btn.style.backgroundColor = '#d33a31';

    // 2. 核心逻辑
    btn.onclick = function() {
        const iframe = document.getElementById('g_iframe');
        if (!iframe) {
            alert('请先进入具体的歌单页面哦！');
            return;
        }

        try {
            const doc = iframe.contentDocument || iframe.contentWindow.document;
            const disabledRows = doc.querySelectorAll('tr.js-dis');

            if (disabledRows.length === 0) {
                alert('当前页面没有加载出变灰的歌曲，请确保已经下滑到底部加载完毕！');
                return;
            }

            let csvContent = '\uFEFF歌名,歌手\n';

            disabledRows.forEach(row => {
                const songEl = row.querySelector('.ttc b');
                const songName = songEl ? songEl.getAttribute('title') : '未知歌名';

                const artistEl = row.querySelector('td:nth-child(4) .text');
                const artistName = artistEl ? artistEl.getAttribute('title') : '未知歌手';

                csvContent += `"${songName}","${artistName}"\n`;
            });

            // 3. 触发下载
            const blob = new Blob([csvContent], { type: 'text/csv;charset=utf-8;' });
            const url = URL.createObjectURL(blob);
            const link = document.createElement('a');
            
            link.href = url;
            link.download = `网易云失效歌曲_${new Date().getTime()}.csv`;
            link.style.display = 'none';
            
            // 【关键修复代码】：阻止点击事件向上冒泡，防止网易云拦截
            link.addEventListener('click', function(e) {
                e.stopPropagation();
            });
            
            document.body.appendChild(link);
            link.click();
            
            document.body.removeChild(link);
            URL.revokeObjectURL(url);
            
        } catch (error) {
            console.error('抓取数据时出错了：', error);
            alert('抓取失败，请检查控制台报错！');
        }
    };

    document.body.appendChild(btn);

})();