script.js

// 全局变量
const PASSWORD = 'gouzai';
const API_URL = 'https://api.guijianpan.com/waterRemoveDetail/xxmQsyByAk?ak=cb0c4fca8fb24938b9fdc74fa8b6b2d0&link=';

let currentVideoData = null;

// 页面加载完成后的初始化
document.addEventListener('DOMContentLoaded', function() {
    // 密码输入框回车事件
    document.getElementById('passwordInput').addEventListener('keypress', function(e) {
        if (e.key === 'Enter') {
            verifyPassword();
        }
    });
    
    // 链接输入框回车事件
    document.getElementById('linkInput').addEventListener('keypress', function(e) {
        if (e.key === 'Enter' && !e.shiftKey) {
            e.preventDefault();
            processVideo();
        }
    });
});

// 密码验证函数
function verifyPassword() {
    const passwordInput = document.getElementById('passwordInput');
    const passwordError = document.getElementById('passwordError');
    const password = passwordInput.value.trim();
    
    if (password === PASSWORD) {
        // 密码正确，显示主界面
        document.getElementById('passwordSection').classList.add('hidden');
        document.getElementById('mainSection').classList.remove('hidden');
        passwordError.textContent = '';
    } else {
        // 密码错误
        passwordError.textContent = '密码错误，请重新输入';
        passwordInput.value = '';
        passwordInput.focus();
    }
}

// 从文本中提取HTTPS链接
function extractHttpsLink(text) {
    const httpsRegex = /https:\/\/[^\s\u4e00-\u9fff]+/g;
    const matches = text.match(httpsRegex);
    return matches ? matches[0] : null;
}

// 处理视频解析和下载
async function processVideo() {
    const linkInput = document.getElementById('linkInput');
    const loading = document.getElementById('loading');
    const result = document.getElementById('result');
    const error = document.getElementById('error');
    const downloadBtn = document.getElementById('downloadBtn');
    
    const inputText = linkInput.value.trim();
    
    if (!inputText) {
        showError('请输入包含视频链接的文本');
        return;
    }
    
    // 提取HTTPS链接
    const videoLink = extractHttpsLink(inputText);
    if (!videoLink) {
        showError('未找到有效的HTTPS链接，请检查输入内容');
        return;
    }
    
    // 显示加载状态
    loading.classList.remove('hidden');
    result.classList.add('hidden');
    error.classList.add('hidden');
    downloadBtn.disabled = true;
    downloadBtn.textContent = '解析中...';
    
    try {
        // 调用API
        const apiUrl = API_URL + encodeURIComponent(videoLink);
        const response = await fetch(apiUrl);
        const data = await response.json();
        
        if (data.code === '10000' && data.content && data.content.success) {
            // 解析成功
            currentVideoData = data.content;
            displayVideoInfo(data.content);
        } else {
            throw new Error(data.msg || '解析失败，请检查链接是否正确');
        }
    } catch (err) {
        console.error('API调用失败:', err);
        showError('解析失败: ' + err.message);
    } finally {
        // 恢复按钮状态
        loading.classList.add('hidden');
        downloadBtn.disabled = false;
        downloadBtn.textContent = '解析下载';
    }
}

// 显示视频信息
function displayVideoInfo(videoData) {
    const result = document.getElementById('result');
    const videoTitle = document.getElementById('videoTitle');
    const videoCover = document.getElementById('videoCover');
    const downloadVideoBtn = document.getElementById('downloadVideoBtn');
    const downloadCoverBtn = document.getElementById('downloadCoverBtn');
    
    // 设置标题
    videoTitle.textContent = videoData.title || '未知标题';
    
    // 设置封面
    if (videoData.cover) {
        videoCover.src = videoData.cover;
        videoCover.style.display = 'block';
    } else {
        videoCover.style.display = 'none';
    }
    
    // 绑定下载事件
    downloadVideoBtn.onclick = () => downloadFile(videoData.url, getFileName(videoData.title, 'mp4'));
    downloadCoverBtn.onclick = () => downloadFile(videoData.cover, getFileName(videoData.title, 'jpg'));
    
    // 显示结果
    result.classList.remove('hidden');
}

// 生成文件名
function getFileName(title, extension) {
    // 清理标题，移除特殊字符
    const cleanTitle = title ? title.replace(/[^\w\u4e00-\u9fff\s-]/g, '').trim() : '视频';
    const timestamp = new Date().getTime();
    return `${cleanTitle}_${timestamp}.${extension}`;
}

// 下载文件
async function downloadFile(url, filename) {
    if (!url) {
        showError('下载链接无效');
        return;
    }
    
    try {
        // 显示下载提示
        showError('正在准备下载...', false);
        
        // 直接在新窗口打开链接，这是最可靠的方法
        // 用户可以在新窗口中右键保存或使用浏览器的下载功能
        const newWindow = window.open(url, '_blank');
        
        if (newWindow) {
            showError('已在新窗口打开视频，请右键选择"另存为"进行下载', false);
            
            // 3秒后清除提示
            setTimeout(() => {
                document.getElementById('error').classList.add('hidden');
            }, 3000);
        } else {
            // 如果弹窗被阻止，提供复制链接的选项
            showCopyLinkOption(url, filename);
        }
        
    } catch (err) {
        console.error('下载失败:', err);
        showCopyLinkOption(url, filename);
    }
}

// 显示复制链接选项
function showCopyLinkOption(url, filename) {
    const errorElement = document.getElementById('error');
    errorElement.innerHTML = `
        <div style="text-align: left; padding: 10px; background: #f8f9fa; border-radius: 8px; margin-top: 10px;">
            <p style="margin: 0 0 10px 0; font-weight: bold;">无法直接下载，请手动操作：</p>
            <p style="margin: 0 0 8px 0;">1. 复制下面的链接</p>
            <p style="margin: 0 0 8px 0;">2. 在新标签页中打开</p>
            <p style="margin: 0 0 10px 0;">3. 右键选择"另存为"</p>
            <div style="display: flex; gap: 10px; align-items: center;">
                <input type="text" value="${url}" readonly style="flex: 1; padding: 8px; border: 1px solid #ddd; border-radius: 4px; font-size: 12px;">
                <button onclick="copyToClipboard('${url}')" style="padding: 8px 12px; background: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer;">复制链接</button>
            </div>
        </div>
    `;
    errorElement.style.color = '#333';
    errorElement.classList.remove('hidden');
}

// 复制到剪贴板
function copyToClipboard(text) {
    navigator.clipboard.writeText(text).then(() => {
        showError('链接已复制到剪贴板！', false);
        setTimeout(() => {
            document.getElementById('error').classList.add('hidden');
        }, 2000);
    }).catch(() => {
        // 如果复制失败，选中文本让用户手动复制
        const input = document.querySelector('input[readonly]');
        if (input) {
            input.select();
            input.setSelectionRange(0, 99999);
            showError('请手动复制选中的链接', false);
        }
    });
}

// 显示错误信息
function showError(message, isError = true) {
    const errorElement = document.getElementById('error');
    errorElement.textContent = message;
    errorElement.style.color = isError ? '#e74c3c' : '#27ae60';
    errorElement.classList.remove('hidden');
}

// 重置表单
function resetForm() {
    document.getElementById('linkInput').value = '';
    document.getElementById('result').classList.add('hidden');
    document.getElementById('error').classList.add('hidden');
    currentVideoData = null;
}