// ==UserScript==
// @name         酷丁编程 - 全屏/缩小按钮切换
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  管理全屏和缩小按钮的显示状态，实现点击放大后隐藏放大按钮并显示缩小按钮
// @author       You
// @match        https://ke.kuding.cn/*
// @grant        none
// ==/UserScript==
(function() {
    'use strict';
    // 当前全屏状态
    let isFullscreen = false;
    // 主函数，查找并管理全屏/缩小按钮
    function manageFullscreenButtons() {
        // 查找全屏按钮（放大镜图标）
        const fullscreenButton = document.querySelector('button.el-button--primary.el-button--mini.is-plain.is-circle .el-icon-zoom-in')?.closest('button');
        // 查找缩小按钮（缩小镜图标）
        const zoomOutButton = document.querySelector('button.el-button--primary.el-button--mini.is-plain.is-circle .el-icon-zoom-out')?.closest('button');
        // 初始化按钮状态
        if (fullscreenButton && zoomOutButton) {
            // 确保按钮可见
            fullscreenButton.style.display = isFullscreen ? 'none' : 'inline-block';
            zoomOutButton.style.display = isFullscreen ? 'inline-block' : 'none';
            // 添加全屏按钮点击事件（防止重复添加）
            if (!fullscreenButton.dataset.listenerAdded) {
                fullscreenButton.addEventListener('click', function() {
                    enterFullscreen();
                    fullscreenButton.style.display = 'none';
                    zoomOutButton.style.display = 'inline-block';
                });
                fullscreenButton.dataset.listenerAdded = 'true';
            }
            // 添加缩小按钮点击事件（防止重复添加）
            if (!zoomOutButton.dataset.listenerAdded) {
                zoomOutButton.addEventListener('click', function() {
                    exitFullscreen();
                    zoomOutButton.style.display = 'none';
                    fullscreenButton.style.display = 'inline-block';
                });
                zoomOutButton.dataset.listenerAdded = 'true';
            }
        }
    }
    // 进入全屏模式
    function enterFullscreen() {
        console.log('进入全屏模式');
        isFullscreen = true;
        // 实际全屏逻辑 - 根据页面结构调整
        const rightContent = document.querySelector('.rightPproblemCotent');
        if (rightContent) {
            rightContent.style.width = '100%';
            rightContent.style.height = '100vh';
            rightContent.style.position = 'fixed';
            rightContent.style.top = '0';
            rightContent.style.left = '0';
            rightContent.style.zIndex = '9999';
            rightContent.style.backgroundColor = '#fff';
        }
    }
    // 退出全屏模式
    function exitFullscreen() {
        console.log('退出全屏模式');
        isFullscreen = false;
        // 实际退出全屏逻辑 - 根据页面结构调整
        const rightContent = document.querySelector('.rightPproblemCotent');
        if (rightContent) {
            rightContent.style.width = '';
            rightContent.style.height = '';
            rightContent.style.position = '';
            rightContent.style.top = '';
            rightContent.style.left = '';
            rightContent.style.zIndex = '';
            rightContent.style.backgroundColor = '';
        }
    }
    // 初始执行
    manageFullscreenButtons();
    // 使用MutationObserver监听DOM变化
    const observer = new MutationObserver(function(mutations) {
        manageFullscreenButtons();
    });
    // 开始观察整个文档
    observer.observe(document, {
        childList: true,
        subtree: true
    });
    // 添加样式确保按钮图标可见
    const style = document.createElement('style');
    style.textContent = `
        button.el-button--primary.el-button--mini.is-plain.is-circle .el-icon-zoom-in,
        button.el-button--primary.el-button--mini.is-plain.is-circle .el-icon-zoom-out {
            display: inline-block !important;
        }
    `;
    document.head.appendChild(style);
})();