// ==UserScript==
// @name         网易云音乐歌单列表一键导出CSV
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  一键导出全部歌曲（歌名和歌手）为 CSV 表格。
// @author       jack
// @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;

    const btn = document.createElement('button');
    btn.innerHTML = '导出全部歌曲';
    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';

    btn.onclick = function() {
        let doc;
        const iframe = document.getElementById('g_iframe');
        if (iframe && iframe.contentDocument) {
            doc = iframe.contentDocument || iframe.contentWindow.document;
            console.log('使用iframe内的document');
        } else {
            doc = document;
            console.log('未找到iframe，使用当前页面document');
        }

        try {
            const songTable = doc.querySelector('table.m-table');
            if (!songTable) {
                alert('未找到歌曲表格！请确认你在歌单页面，且已下滑加载所有歌曲。');
                return;
            }

            const allRows = songTable.querySelectorAll('tr');
            const dataRows = Array.from(allRows).filter(row => row.querySelector('.ttc'));

            console.log('找到歌曲行数量：', dataRows.length);
            if (dataRows.length === 0) {
                alert('当前页面没有加载出歌曲，请确保已经下滑到底部加载完毕！');
                return;
            }

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

            dataRows.forEach(row => {
                const songEl = row.querySelector('.ttc b[title]') || row.querySelector('.ttc');
                const songName = songEl ? (songEl.getAttribute('title') || songEl.textContent.trim()) : '未知歌名';

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

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

            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 = `网易云全部歌曲_${new Date().getTime()}.csv`;
            link.style.display = 'none';

            link.addEventListener('click', function(e) {
                e.stopPropagation();
            });

            document.body.appendChild(link);
            link.click();

            document.body.removeChild(link);
            URL.revokeObjectURL(url);

            alert(`导出成功！共 ${dataRows.length} 首歌曲`);

        } catch (error) {
            console.error('抓取数据时出错了：', error);
            alert(`抓取失败！错误信息：${error.message}\n请打开浏览器控制台（F12）查看详细报错`);
        }
    };

    document.body.appendChild(btn);

})();