// ==UserScript==
// @name         Zlib2WebDAV上传助手 发布版本
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  在Z-lib网站的图书详情页 上传图书至WebDAV 可从脚本设置修改WebDAV设置
// @author       StreamL
// @match        https://zlib.by/*
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_xmlhttpRequest
// @grant        GM_notification
// @grant        GM_registerMenuCommand
// ==/UserScript==

(function() {
    'use strict';

    // 默认配置
    const defaultConfig = {
        webdav: {
            endpoint: ' ',
            id: ' ',
            password: ' ',
            directory: ''
        }
    };

    // 获取配置
    function getConfig() {
        const saved = GM_getValue('webdav_config');
        return saved ? JSON.parse(saved) : defaultConfig;
    }

    // 保存配置
    function saveConfig(config) {
        GM_setValue('webdav_config', JSON.stringify(config));
    }

    // 创建浮动按钮
    function createFloatingButton() {
        const buttonContainer = document.createElement('div');
        buttonContainer.innerHTML = `
            <div id="webdav-btn" style="
                position: fixed;
                right: 20px;
                top: 50%;
                transform: translateY(-50%);
                z-index: 10000;
                background: #007bff;
                color: white;
                padding: 12px 18px;
                border-radius: 8px;
                cursor: pointer;
                font-size: 14px;
                font-weight: 500;
                box-shadow: 0 4px 12px rgba(0,123,255,0.3);
                user-select: none;
                transition: all 0.2s ease;
                text-align: center;
                min-width: 80px;
                border: none;
            ">WebDAV</div>
        `;
        document.body.appendChild(buttonContainer);

        const btn = document.getElementById('webdav-btn');
        
        // 添加悬停效果
        btn.addEventListener('mouseenter', () => {
            btn.style.background = '#0056b3';
            btn.style.transform = 'translateY(-50%) scale(1.05)';
            btn.style.boxShadow = '0 6px 16px rgba(0,123,255,0.4)';
        });
        
        btn.addEventListener('mouseleave', () => {
            btn.style.background = '#007bff';
            btn.style.transform = 'translateY(-50%) scale(1)';
            btn.style.boxShadow = '0 4px 12px rgba(0,123,255,0.3)';
        });

        btn.addEventListener('click', handleButtonClick);
    }

    // 获取下载链接
    function getDownloadLink() {
        const selector = 'body > div.container > div > div > div:nth-child(4) > section > div > div.book-actions-buttons > div:nth-child(4) > div > a';
        const downloadBtn = document.querySelector(selector);
        return downloadBtn ? downloadBtn.href : null;
    }

    // 处理按钮点击
    function handleButtonClick() {
        const downloadUrl = getDownloadLink();
        if (!downloadUrl) {
            alert('未找到下载按钮');
            return;
        }

        // 设置按钮为等待状态
        setButtonLoading(true);

        // 显示进度提示
        showNotification(`正在请求 ${downloadUrl} 的内容...`);
        
        // 发送请求获取文件
        GM_xmlhttpRequest({
            method: 'GET',
            url: downloadUrl,
            responseType: 'blob',
            onload: function(response) {
                setButtonLoading(false);
                handleDownloadResponse(response);
            },
            onerror: function(error) {
                setButtonLoading(false);
                showNotification('下载失败: ' + error.statusText, 'error');
            }
        });
    }

    // 处理下载响应
    function handleDownloadResponse(response) {
        if (response.status === 200) {
            // 尝试从响应头获取文件名
            const contentDisposition = response.responseHeaders.match(/filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/);
            let filename = '';
            
            if (contentDisposition) {
                filename = contentDisposition[1].replace(/['"]/g, '');
            }

            // 检查文件扩展名
            const validExtensions = ['txt', 'epub', 'mobi', 'azw3', 'pdf'];
            const fileExt = filename.split('.').pop().toLowerCase();
            
            if (!validExtensions.includes(fileExt)) {
                showNotification('无法获取有效的电子书文件', 'error');
                return;
            }

            // 显示确认对话框
            showConfirmDialog(filename, response.response);
        } else {
            showNotification('无法获取文件内容', 'error');
        }
    }

    // 显示确认对话框
    function showConfirmDialog(filename, fileBlob) {
        const dialog = document.createElement('div');
        dialog.innerHTML = `
            <div id="confirm-dialog" style="
                position: fixed;
                top: 50%;
                left: 50%;
                transform: translate(-50%, -50%);
                z-index: 10001;
                background: white;
                padding: 25px;
                border-radius: 12px;
                box-shadow: 0 8px 32px rgba(0,0,0,0.15);
                max-width: 420px;
                min-width: 350px;
                font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            ">
                <h3 style="margin: 0 0 20px 0; color: #333; font-size: 18px; font-weight: 600;">确认上传</h3>
                <p style="margin: 0 0 25px 0; color: #666; font-size: 14px; line-height: 1.5; word-break: break-all;">
                    <strong>文件名:</strong> ${filename}
                </p>
                <div style="
                    display: flex;
                    justify-content: flex-end;
                    gap: 12px;
                    border-top: 1px solid #eee;
                    padding-top: 20px;
                ">
                    <button id="cancel-btn" style="
                        padding: 10px 20px;
                        border: 2px solid #ddd;
                        background: white;
                        color: #666;
                        border-radius: 6px;
                        cursor: pointer;
                        font-size: 14px;
                        transition: all 0.2s ease;
                    ">取消</button>
                    <button id="confirm-btn" style="
                        padding: 10px 20px;
                        background: #007bff;
                        color: white;
                        border: none;
                        border-radius: 6px;
                        cursor: pointer;
                        font-size: 14px;
                        font-weight: 500;
                        transition: background-color 0.2s ease;
                    ">确定上传</button>
                </div>
            </div>
            <div style="
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0,0,0,0.5);
                z-index: 10000;
                backdrop-filter: blur(2px);
            "></div>
        `;
        
        document.body.appendChild(dialog);

        // 添加按钮悬停效果
        const cancelBtn = document.getElementById('cancel-btn');
        const confirmBtn = document.getElementById('confirm-btn');
        
        cancelBtn.addEventListener('mouseenter', () => {
            cancelBtn.style.borderColor = '#bbb';
            cancelBtn.style.color = '#333';
        });
        cancelBtn.addEventListener('mouseleave', () => {
            cancelBtn.style.borderColor = '#ddd';
            cancelBtn.style.color = '#666';
        });
        
        confirmBtn.addEventListener('mouseenter', () => {
            confirmBtn.style.background = '#0056b3';
        });
        confirmBtn.addEventListener('mouseleave', () => {
            confirmBtn.style.background = '#007bff';
        });

        // 绑定事件
        cancelBtn.addEventListener('click', () => {
            document.body.removeChild(dialog);
        });

        confirmBtn.addEventListener('click', () => {
            document.body.removeChild(dialog);
            uploadToWebDAV(filename, fileBlob);
        });
    }

    // 上传到WebDAV
    function uploadToWebDAV(filename, fileBlob) {
        const config = getConfig();
        const webdav = config.webdav;
        const uploadUrl = webdav.endpoint + webdav.directory + filename;

        // 设置按钮为等待状态
        setButtonLoading(true);
        showNotification('正在上传文件...');

        GM_xmlhttpRequest({
            method: 'PUT',
            url: uploadUrl,
            data: fileBlob,
            headers: {
                'Authorization': 'Basic ' + btoa(webdav.id + ':' + webdav.password)
            },
            onload: function(response) {
                setButtonLoading(false);
                if (response.status >= 200 && response.status < 300) {
                    showNotification('文件已成功上传到WebDAV', 'success');
                } else {
                    showNotification('上传失败: ' + response.statusText, 'error');
                }
            },
            onerror: function(error) {
                setButtonLoading(false);
                showNotification('上传错误: ' + error.statusText, 'error');
            }
        });
    }

    // 显示通知
    function showNotification(message, type = 'info') {
        const notification = document.createElement('div');
        const bgColor = type === 'success' ? '#28a745' : type === 'error' ? '#dc3545' : '#007bff';
        
        notification.innerHTML = `
            <div style="
                position: fixed;
                top: 20px;
                right: 20px;
                z-index: 10002;
                background: ${bgColor};
                color: white;
                padding: 15px 20px;
                border-radius: 5px;
                box-shadow: 0 2px 10px rgba(0,0,0,0.3);
                max-width: 300px;
                word-wrap: break-word;
            ">${message}</div>
        `;
        
        document.body.appendChild(notification);
        
        // 3秒后自动移除
        setTimeout(() => {
            if (notification.parentNode) {
                document.body.removeChild(notification);
            }
        }, 3000);
    }

    // 显示设置对话框
    function showSettingsDialog() {
        const config = getConfig();
        const dialog = document.createElement('div');
        dialog.innerHTML = `
            <div id="settings-dialog" style="
                position: fixed;
                top: 50%;
                left: 50%;
                transform: translate(-50%, -50%);
                z-index: 10001;
                background: white;
                padding: 30px;
                border-radius: 12px;
                box-shadow: 0 8px 32px rgba(0,0,0,0.15);
                width: 520px;
                max-height: 80vh;
                overflow-y: auto;
                font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            ">
                <h3 style="margin: 0 0 25px 0; color: #333; font-size: 20px; font-weight: 600;">WebDAV设置</h3>
                
                <div style="margin-bottom: 18px;">
                    <label style="display: block; margin-bottom: 8px; font-weight: 600; color: #555;">WebDAV 端点:</label>
                    <input type="text" id="endpoint-input" value="${config.webdav.endpoint}" style="
                        width: calc(100% - 24px);
                        padding: 12px;
                        border: 2px solid #e1e5e9;
                        border-radius: 6px;
                        font-size: 14px;
                        transition: border-color 0.2s ease;
                    " placeholder="https://example.com/dav/">
                </div>

                <div style="display: flex; gap: 15px; margin-bottom: 18px;">
                    <div style="flex: 1;">
                        <label style="display: block; margin-bottom: 8px; font-weight: 600; color: #555;">用户名:</label>
                        <input type="text" id="username-input" value="${config.webdav.id}" style="
                            width: calc(100% - 24px);
                            padding: 12px;
                            border: 2px solid #e1e5e9;
                            border-radius: 6px;
                            font-size: 14px;
                            transition: border-color 0.2s ease;
                        ">
                    </div>
                    <div style="flex: 1;">
                        <label style="display: block; margin-bottom: 8px; font-weight: 600; color: #555;">密码:</label>
                        <input type="password" id="password-input" value="${config.webdav.password}" style="
                            width: calc(100% - 24px);
                            padding: 12px;
                            border: 2px solid #e1e5e9;
                            border-radius: 6px;
                            font-size: 14px;
                            transition: border-color 0.2s ease;
                        ">
                    </div>
                </div>

                <div style="margin-bottom: 25px;">
                    <label style="display: block; margin-bottom: 8px; font-weight: 600; color: #555;">目录路径:</label>
                    <input type="text" id="directory-input" value="${config.webdav.directory}" placeholder="books/ (留空为根目录)" style="
                        width: calc(100% - 24px);
                        padding: 12px;
                        border: 2px solid #e1e5e9;
                        border-radius: 6px;
                        font-size: 14px;
                        transition: border-color 0.2s ease;
                    ">
                    <small style="color: #666; font-size: 12px; margin-top: 4px; display: block;">目录路径应以 / 结尾，留空则为根目录</small>
                </div>

                <div style="
                    display: flex;
                    justify-content: flex-end;
                    border-top: 1px solid #eee; 
                    padding-top: 20px;
                    gap: 8px;
                ">
                    <button id="reset-settings-btn" style="
                        padding: 10px 16px;
                        background: #dc3545;
                        color: white;
                        border: none;
                        border-radius: 6px;
                        cursor: pointer;
                        font-size: 14px;
                        transition: background-color 0.2s ease;
                    ">重置</button>
                    <button id="cancel-settings-btn" style="
                        padding: 10px 16px;
                        border: 2px solid #ddd;
                        background: white;
                        color: #666;
                        border-radius: 6px;
                        cursor: pointer;
                        font-size: 14px;
                        transition: all 0.2s ease;
                    ">取消</button>
                    <button id="save-settings-btn" style="
                        padding: 10px 20px;
                        background: #28a745;
                        color: white;
                        border: none;
                        border-radius: 6px;
                        cursor: pointer;
                        font-size: 14px;
                        font-weight: 500;
                        transition: background-color 0.2s ease;
                    ">保存设置</button>
                </div>
            </div>
            <div style="
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0,0,0,0.5);
                z-index: 10000;
                backdrop-filter: blur(2px);
            "></div>
        `;
        
        document.body.appendChild(dialog);

        // 添加输入框焦点效果
        const inputs = dialog.querySelectorAll('input, textarea');
        inputs.forEach(input => {
            input.addEventListener('focus', () => {
                input.style.borderColor = '#007bff';
                input.style.boxShadow = '0 0 0 3px rgba(0,123,255,0.1)';
            });
            input.addEventListener('blur', () => {
                input.style.borderColor = '#e1e5e9';
                input.style.boxShadow = 'none';
            });
        });

        // 绑定事件
        document.getElementById('cancel-settings-btn').addEventListener('click', () => {
            document.body.removeChild(dialog);
        });

        document.getElementById('save-settings-btn').addEventListener('click', () => {
            saveSettings(dialog);
        });

        document.getElementById('reset-settings-btn').addEventListener('click', () => {
            if (confirm('确定要重置所有设置到默认值吗？')) {
                resetSettings(dialog);
            }
        });
    }

    // 保存设置
    function saveSettings(dialog) {
        const endpoint = document.getElementById('endpoint-input').value.trim();
        const username = document.getElementById('username-input').value.trim();
        const password = document.getElementById('password-input').value;
        let directory = document.getElementById('directory-input').value.trim();
        
        // 确保目录路径以 / 结尾（如果不为空）
        if (directory && !directory.endsWith('/')) {
            directory += '/';
        }

        if (!endpoint || !username || !password) {
            showNotification('请填写完整的WebDAV配置', 'error');
            return;
        }

        const newConfig = {
            webdav: {
                endpoint: endpoint,
                id: username,
                password: password,
                directory: directory
            }
        };

        saveConfig(newConfig);
        showNotification('设置已保存', 'success');
        document.body.removeChild(dialog);
    }

    // 重置设置
    function resetSettings(dialog) {
        document.getElementById('endpoint-input').value = defaultConfig.webdav.endpoint;
        document.getElementById('username-input').value = defaultConfig.webdav.id;
        document.getElementById('password-input').value = defaultConfig.webdav.password;
        document.getElementById('directory-input').value = defaultConfig.webdav.directory;
        
        showNotification('设置已重置为默认值', 'info');
    }

    // 测试WebDAV连接
    function testWebDAVConnection() {
        const endpoint = document.getElementById('endpoint-input').value.trim();
        const username = document.getElementById('username-input').value.trim();
        const password = document.getElementById('password-input').value;
        
        if (!endpoint || !username || !password) {
            showNotification('请先填写完整的WebDAV配置', 'error');
            return;
        }

        showNotification('正在测试连接...', 'info');

        GM_xmlhttpRequest({
            method: 'PROPFIND',
            url: endpoint,
            headers: {
                'Authorization': 'Basic ' + btoa(username + ':' + password),
                'Depth': '0'
            },
            onload: function(response) {
                if (response.status >= 200 && response.status < 300) {
                    showNotification('连接测试成功！', 'success');
                } else {
                    showNotification(`连接失败: ${response.status} ${response.statusText}`, 'error');
                }
            },
            onerror: function(error) {
                showNotification('连接测试失败: ' + error.statusText, 'error');
            }
        });
    }

    // 设置按钮加载状态
    function setButtonLoading(isLoading) {
        const btn = document.getElementById('webdav-btn');
        if (!btn) return;

        if (isLoading) {
            btn.innerHTML = '处理中...';
            btn.style.background = '#6c757d';
            btn.style.cursor = 'not-allowed';
            btn.style.opacity = '0.7';
            btn.disabled = true;
            
            // 移除悬停效果
            btn.onmouseenter = null;
            btn.onmouseleave = null;
        } else {
            btn.innerHTML = 'WebDAV';
            btn.style.background = '#007bff';
            btn.style.cursor = 'pointer';
            btn.style.opacity = '1';
            btn.disabled = false;
            
            // 重新添加悬停效果
            btn.addEventListener('mouseenter', () => {
                if (!btn.disabled) {
                    btn.style.background = '#0056b3';
                    btn.style.transform = 'translateY(-50%) scale(1.05)';
                    btn.style.boxShadow = '0 6px 16px rgba(0,123,255,0.4)';
                }
            });
            
            btn.addEventListener('mouseleave', () => {
                if (!btn.disabled) {
                    btn.style.background = '#007bff';
                    btn.style.transform = 'translateY(-50%) scale(1)';
                    btn.style.boxShadow = '0 4px 12px rgba(0,123,255,0.3)';
                }
            });
        }
    }

    // 初始化
    function init() {

        createFloatingButton();

        
        // 注册脚本菜单命令
        GM_registerMenuCommand('WebDAV配置', showSettingsDialog);
    }

    // 页面加载完成后初始化
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }
})();