// ==UserScript==
// @name         CSDN增强
// @namespace    xyz_xyz-CSDN%e5%a2%9e%e5%bc%ba
// @version      1.0.0
// @description  免关注查看csdn文章；可以屏蔽掉csdn的广告；免登录复制
// @author       xyz_xyz
// @match        https://*.csdn.net/*
// @icon         https://g.csdnimg.cn/static/logo/favicon32.ico
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    function modifyArticle() {
        const article = document.querySelector('.article_content.clearfix:not([data-fixed])');
        if (article) {
            article.style.height = 'auto';
            article.setAttribute('data-fixed', 'true');
            console.log('已修改 article_content 样式');
        }
        const mask = document.querySelector('.hide-article-box.hide-article-pos.text-center');
        if (mask) {
            mask.remove();
            console.log('已删除遮罩层');
        }
    }

    function updateButtons() {
        document.querySelectorAll('pre.hljs div.hljs-button:not([data-fixed])').forEach(div => {
            div.outerHTML =
                '<div class="hljs-button {2}" data-title="复制" onclick="hljs.copyCode(event)" data-fixed="true"></div>';
            console.log('已修复 hljs 复制按钮');
        });
        document.querySelectorAll('pre.prettyprint div.hljs-button:not([data-fixed])').forEach(div => {
            div.outerHTML =
                '<div class="hljs-button {2}" data-title="复制" onclick="mdcp.copyCode(event)" data-fixed="true"></div>';
            console.log('已修复 prettyprint 复制按钮');
        });
    }

    function hideIframes() {
        document.querySelectorAll('iframe:not([data-fixed])').forEach(iframe => {
            iframe.style.display = 'none';
            iframe.setAttribute('data-fixed', 'true');
            console.log('已隐藏 iframe');
        });
    }

    function main() {
        modifyArticle();
        updateButtons();
        hideIframes();
    }

    window.addEventListener('load', main);
    const observer = new MutationObserver(main);
    observer.observe(document.body, { childList: true, subtree: true });
})();