// ==UserScript==
// @name         LMSGuide辅助
// @version      1.3.2
// @description  要有远大的理想，也要有脚踏实地的本领
// @author       小钊
// @match        *://10.90.53.11:5090/*
// @homepageURL  https://www.zxqblog.cn
// @grant        GM_registerMenuCommand
// @grant        GM_unregisterMenuCommand
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_deleteValue
// ==/UserScript==

(function() {
    'use strict';
    // 通用样式定义
    // 复制到虚拟机的样式
    const buttonStyle = `
        .copy-vm-btn {
            position: absolute;
            right: 10px;
            top: 10px;
            padding: 5px 10px;
            background-color: #4CAF50;
            color: white;
            border: none;
            border-radius: 3px;
            cursor: pointer;
            font-size: 12px;
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 100;
        }
        .copy-vm-btn:hover {
            background-color: #45a049;
        }
        /* pre标签容器样式 */
        .pre-container {
            position: relative;
        }
        /* 鼠标悬浮时显示按钮 */
        .pre-container:hover .copy-vm-btn {
            opacity: 1;
        }
    `;
    const styleSheet = document.createElement("style");
    styleSheet.textContent = buttonStyle;
    document.head.appendChild(styleSheet);
    // 设置页面的开关样式
    const switchStyles = {
        position: 'relative',
        width: '50px',
        height: '24px',
        appearance: 'none',
        outline: 'none',
        borderRadius: '12px',
        backgroundColor: '#ccc',
        cursor: 'pointer',
        verticalAlign: 'middle'
    };
    const sliderStyles = {
        position: 'absolute',
        top: '2px',
        left: '2px',
        width: '20px',
        height: '20px',
        borderRadius: '50%',
        backgroundColor: '#fff',
        transition: 'all 0.3s'
    };
    // -------------------------------------
    // 注册脚本菜单
    GM_registerMenuCommand("设置", showSettingsPopup);
    // -------------------------------------
    // 免责说明
    window.addEventListener('load', function(event) { 
        if (!GM_getValue('mianzeshenming',false)){
            // 如果检测到没有同意协议则渲染免责协议窗口
            document.body.innerHTML = '';
            const mzsf = document.createElement('div');
            Object.assign(mzsf.style, {
                position: 'fixed',
                top: '50%',
                left: '50%',
                transform: 'translate(-50%, -50%)',
                padding: '20px',
                backgroundColor: '#fff',
                borderRadius: '8px',
                boxShadow: '0 4px 8px rgba(0,0,0,0.2)',
                zIndex: '1000',
                width: '300px'
            });

            // 标题与提示渲染
            const title = document.createElement('h2');
            title.textContent = '免责协议';
            mzsf.appendChild(title);
            const tips = document.createElement('p');
            tips.textContent = "请合理使用此脚本，造成一切损失与作者无关！同意协议后点击刷新进行页面刷新，如果不同意协议请删除此脚本并刷新网页"
            tips.style.marginTop = '10px';
            tips.style.marginBottom = '10px'
            mzsf.appendChild(tips);

            // 开关渲染
            // 复制到虚拟机开关
            mzsf.appendChild(createSwitch('同意免责协议', 'mianzeshenming'));

            // 刷新按钮渲染
            const sxButton = document.createElement('button');
            sxButton.textContent = '刷新';
            Object.assign(sxButton.style, {
                marginTop: '15px',
                padding: '8px 16px',
                backgroundColor: '#f44336',
                color: 'white',
                border: 'none',
                borderRadius: '4px',
                cursor: 'pointer'
            });
            sxButton.onclick = function() {
                location.reload()
            };

            mzsf.appendChild(sxButton);
            document.body.appendChild(mzsf);
        }else {
            // 否则渲染设置窗口
            if (!GM_getValue("CopyToVM_Switch_Status",false) && !GM_getValue("Autoground_Switch_Status",false) && !GM_getValue("Select_Switch_Status",false) && !GM_getValue("NoOneShowsetting",false)) {
                // 如果所有的配置项均未配置，则显示配置窗口
                GM_setValue("NoOneShowsetting", true);
                showSettingsPopup();
            }
        }
    })
    // -------------------------------------
    // 函数部分
    // 设置->创建开关 函数
    function createSwitch(label, storageKey, onChange) {
        const container = document.createElement('div');
        container.style.marginBottom = '15px';

        const switchLabel = document.createElement('label');
        switchLabel.textContent = label;
        switchLabel.style.marginRight = '10px';
        switchLabel.style.fontWeight = 'normal';

        const switchInput = document.createElement('input');
        switchInput.type = 'checkbox';
        Object.assign(switchInput.style, switchStyles);

        const slider = document.createElement('span');
        Object.assign(slider.style, sliderStyles);
        switchInput.appendChild(slider);

        // 初始状态
        const isChecked = GM_getValue(storageKey, false);
        switchInput.name = storageKey;
        switchInput.checked = isChecked;
        switchInput.style.backgroundColor = isChecked ? '#4CAF50' : '#ccc';
        slider.style.transform = isChecked ? 'translateX(26px)' : 'translateX(0)';

        // 事件处理
        switchInput.addEventListener('change', function() {
            const checked = this.checked;
            this.style.backgroundColor = checked ? '#4CAF50' : '#ccc';
            slider.style.transform = checked ? 'translateX(26px)' : 'translateX(0)';
            GM_setValue(storageKey, checked);
            if (onChange) onChange(checked);
        });

        container.appendChild(switchLabel);
        container.appendChild(switchInput);
        return container;
    }
    // 设置->主界面 函数
    function showSettingsPopup() {
        // 确保之前的弹窗被移除
        const existingPopup = document.querySelector('div[style*="position: fixed; top: 50%; left: 50%;"]');
        if (existingPopup) {
            document.body.removeChild(existingPopup);
        }
        const popup = document.createElement('div');
        Object.assign(popup.style, {
            position: 'fixed',
            top: '50%',
            left: '50%',
            transform: 'translate(-50%, -50%)',
            padding: '20px',
            backgroundColor: '#fff',
            borderRadius: '8px',
            boxShadow: '0 4px 8px rgba(0,0,0,0.2)',
            zIndex: '1000',
            width: '300px'
        });

        // 标题与提示渲染
        const title = document.createElement('h2');
        title.textContent = '设置';
        popup.appendChild(title);
        const tip_list = ["启动立马生效，关闭刷新生效","复制到虚拟机优先级高于复制到实体机"];
        const tips = document.createElement('p');
        tips.textContent = tip_list[0];
        tips.id = "setting_tip";
        tips.style.marginTop = '10px';
        tips.style.marginBottom = '10px'
        popup.appendChild(tips);
        let tip_id = 1
        const tip_initer = setInterval(() => {
            tip_id = tip_id==1 ? 0 : 1;
            document.getElementById("setting_tip").innerHTML = tip_list[tip_id];
        }, 1000)
        

        // 开关渲染
        // 复制到虚拟机开关
        popup.appendChild(createSwitch('复制到虚拟机', 'CopyToVM_Switch_Status'));
        // 实验报告滚动
        popup.appendChild(createSwitch('实验报告自动滚动到底', 'Autoground_Switch_Status'));
        // 移除复制限制
        popup.appendChild(createSwitch('移除移除选择、复制、剪切操作的限制', 'Select_Switch_Status'));
        // 复制到实体机开关
        popup.appendChild(createSwitch('复制到实体机', 'CopyToTrue_Switch_Status'));

        // 关闭按钮渲染
        const closeButton = document.createElement('button');
        closeButton.textContent = '关闭';
        Object.assign(closeButton.style, {
            marginTop: '15px',
            padding: '8px 16px',
            backgroundColor: '#f44336',
            color: 'white',
            border: 'none',
            borderRadius: '4px',
            cursor: 'pointer'
        });
        closeButton.onclick = function() {
            document.body.removeChild(popup);
            clearInterval(tip_initer)
        };

        popup.appendChild(closeButton);
        document.body.appendChild(popup);
    }
    // 主功能->弹窗函数
    function notification(text) {
        const notification = document.createElement('div');
        notification.style.cssText = `
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 10px 20px;
            background-color: #4CAF50;
            color: white;
            border-radius: 5px;
            z-index: 10000;
        `;
        notification.textContent = text;
        document.body.appendChild(notification);
        setTimeout(() => notification.remove(), 2000);
    }
    // 复制到虚拟机功能 -> 复制到虚拟机 函数
    function sendToVirtualMachine(text) {
        if (GM_getValue("CopyToVM_Switch_Status",false)){
            console.log("text"+text)
            const code = "code:"+text
            document.getElementById("tool_content").contentWindow.postMessage(code, "*");
        }else if (GM_getValue("CopyToTrue_Switch_Status",false)) {
            mycopy(text);
        }
        return true
    }
    // 复制到实体机功能 -> 复制到实体机 函数
    function mycopy(data) {
        const TEXT_PLAIN = "text/plain";
        const TEXT_HTML = "text/html";
        const COPY = "copy";
        const opt = Object.prototype.toString;
        const execCopyCommand = (data) => {
            const textarea = document.createElement("textarea");
            const handler = (event) => {
                event.preventDefault();
                event.stopImmediatePropagation();
                for (const [key, value] of Object.entries(data)) {
                    event.clipboardData && event.clipboardData.setData(key, value);
                }
            };
            textarea.addEventListener(COPY, handler, true);
            textarea.style.position = "fixed";
            textarea.style.left = "-999999999px";
            textarea.style.top = "-999999999px";
            textarea.value = data[TEXT_PLAIN] || " ";
            document.body.appendChild(textarea);
            textarea.select();
            document.execCommand("copy");
            textarea.removeEventListener(COPY, handler);
            document.body.removeChild(textarea);
        }
        function isString(value) {
            return opt.call(value) === "[object String]";
        }
        const isEmptyContent = (data) => {
            if (!data)
                return true;
            return isString(data) ? !data : !data[TEXT_PLAIN];
        };
        const params = isString(data) ? { [TEXT_PLAIN]: data } : data;
        const plainText = params[TEXT_PLAIN];
        if (!plainText)
            return false;
        if (navigator.clipboard && window.ClipboardItem) {
            const dataItems = {};
            for (const [key, value] of Object.entries(params)) {
            const blob = new Blob([value], { type: key });
            dataItems[key] = blob;
            }
            navigator.clipboard.write([new ClipboardItem(dataItems)]).catch(() => {
            execCopyCommand(params);
            });
        } else {
            execCopyCommand(params);
        }
        return true;
    }
    // -------------------------------------
    // 定时器部分
    // 页面加载时移除选择、复制、剪切操作的限制
    setInterval(() => {
        if (GM_getValue("Select_Switch_Status",false)) {
            document.onselectstart = function(event) {return true;};
            document.oncopy = function(event) {return true;};
            document.oncut = function(event) {return true;};
            var elements = document.querySelectorAll('[class^=" language-"]');
            elements.forEach(function(element) {element.style.cssText = '';});
        }
    }, 1000)
    // 复制到虚拟/虚拟机按钮渲染
    setInterval(() => {
        if (GM_getValue("CopyToVM_Switch_Status",false)||GM_getValue("CopyToTrue_Switch_Status",false)){
            const btn_type = GM_getValue("CopyToVM_Switch_Status") ? ["虚拟",'Vm'] : ["实体","Tr"];
            document.querySelectorAll('pre[class^=" language-"]').forEach(pre => {
                // 元素存在且状态正确
                if (pre.getAttribute('data-type-button')==btn_type[1]) return;
                // 元素存在且状态不正确
                if (pre.getAttribute('data-type-button') != null && pre.getAttribute('data-type-button')!=btn_type[1]) {
                    pre.setAttribute('data-type-button', btn_type[1]);
                    const btns = document.getElementsByClassName('copy-vm-btn')
                    Array.from(btns).forEach(btn=>{
                        btn.innerHTML = `复制到${btn_type[0]}机`;
                        btn.onclick = function() {
                            const success = sendToVirtualMachine(pre.textContent);
                            if (success) {notification(`已复制到${btn_type[0]}机！`);}
                        };
                    })
                    return
                }; 
                // 元素不存在
                console.log("不正确")
                const container = document.createElement('div');
                container.className = 'pre-container';
                pre.parentNode.insertBefore(container, pre);
                container.appendChild(pre);
                const button = document.createElement('button');
                button.className = 'copy-vm-btn';
                pre.setAttribute('data-type-button', btn_type[1]);
                button.textContent = `复制到${btn_type[0]}机`
                button.onclick = function() {
                    const success = sendToVirtualMachine(pre.textContent);
                    if (success) {notification(`已复制到${btn_type[0]}机！`);}
                };
                container.appendChild(button);
            });
        }
    }, 1000);
    // 点击实验报告滚动到最下面
    setInterval(() => {
        if (GM_getValue("Autoground_Switch_Status",false)) {
            try {
                document.querySelector("#assignment-report").addEventListener('click', function() {
                    const lastElement =document.getElementById("report_area_ifr").contentDocument.querySelector("#tinymce p:last-child")
                    if (lastElement) {
                        lastElement.scrollIntoView({
                            behavior: 'smooth',
                            block: 'center',
                            inline: 'nearest'
                        });
                    }
                });
            }catch {}
        }
    }, 1000)
})();