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worker.js
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2285 lines (1998 loc) · 67 KB
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// ==================== 配置区域 ====================
const CONFIG = {
// R2 Bucket 名称
BUCKET_NAME: 'file-transfer',
// 全局访问密码（留空则不启用全局密码验证）
ACCESS_PASSWORD: '',
// 文件分享密码密钥（用于生成临时下载签名，建议设置复杂随机字符串）
// 如不设置，将使用默认密钥（生产环境请务必自定义）
SHARE_SECRET_KEY: '',
// 临时下载链接有效期（毫秒）默认5分钟
TEMP_LINK_EXPIRE: 5 * 60 * 1000,
// 文件大小限制（字节）默认 100GB
MAX_FILE_SIZE: 100 * 1024 * 1024 * 1024,
// 文件过期时间（毫秒）默认 7天，0 表示永不过期
FILE_EXPIRE_TIME: 7 * 24 * 60 * 60 * 1000,
// 允许的文件类型（留空数组表示允许所有）
// 例如: ['image/png', 'image/jpeg', 'application/pdf']
ALLOWED_TYPES: [],
// 自定义域名（如果有绑定自定义域名，填写这里）
CUSTOM_DOMAIN: '',
// 最大并发上传数
MAX_CONCURRENT_UPLOADS: 3,
// 分片上传配置
// 分片大小（字节）默认 50MB，Cloudflare Workers 限制单个请求 100MB，建议不超过 50MB
CHUNK_SIZE: 50 * 1024 * 1024,
// 启用分片上传的文件大小阈值（字节）默认 100MB
MULTIPART_THRESHOLD: 100 * 1024 * 1024,
};
// ==================== HTML 模板 ====================
const HTML_TEMPLATE = `<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
<title>文件中转站 | File Transfer</title>
<!-- QR Code Generator 库 -->
<script src="https://cdn.jsdelivr.net/npm/qrcode-generator@1.4.4/qrcode.min.js"></script>
<style>
:root {
--bg-primary: #0a0a0f;
--bg-secondary: #12121a;
--bg-card: rgba(30, 30, 45, 0.6);
--border-color: rgba(255, 255, 255, 0.1);
--text-primary: #ffffff;
--text-secondary: #a0a0b0;
--accent-purple: #8b5cf6;
--accent-blue: #3b82f6;
--accent-cyan: #06b6d4;
--accent-pink: #ec4899;
--success: #10b981;
--error: #ef4444;
--warning: #f59e0b;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
background: var(--bg-primary);
min-height: 100vh;
padding: 24px;
color: var(--text-primary);
background-image:
radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
radial-gradient(ellipse at 80% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
radial-gradient(ellipse at 50% 50%, rgba(59, 130, 246, 0.05) 0%, transparent 70%);
}
.container {
max-width: 1000px;
margin: 0 auto;
}
/* Header */
.header {
text-align: center;
margin-bottom: 32px;
padding: 20px 0;
}
.header h1 {
font-size: 2.5rem;
font-weight: 700;
background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-cyan) 50%, var(--accent-pink) 100%);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
margin-bottom: 8px;
letter-spacing: -0.02em;
}
.header p {
color: var(--text-secondary);
font-size: 1rem;
}
/* Stats Cards */
.stats-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 16px;
margin-bottom: 24px;
}
.stat-card {
background: var(--bg-card);
backdrop-filter: blur(20px);
border: 1px solid var(--border-color);
border-radius: 16px;
padding: 20px;
transition: all 0.3s ease;
}
.stat-card:hover {
transform: translateY(-2px);
border-color: rgba(139, 92, 246, 0.3);
box-shadow: 0 8px 32px rgba(139, 92, 246, 0.15);
}
.stat-label {
font-size: 12px;
color: var(--text-secondary);
text-transform: uppercase;
letter-spacing: 0.05em;
margin-bottom: 8px;
}
.stat-value {
font-size: 1.75rem;
font-weight: 700;
color: var(--text-primary);
}
.stat-value.purple { color: var(--accent-purple); }
.stat-value.cyan { color: var(--accent-cyan); }
.stat-value.pink { color: var(--accent-pink); }
/* Main Card */
.card {
background: var(--bg-card);
backdrop-filter: blur(20px);
border: 1px solid var(--border-color);
border-radius: 20px;
padding: 32px;
margin-bottom: 24px;
transition: all 0.3s ease;
}
.card:hover {
border-color: rgba(139, 92, 246, 0.2);
}
/* Upload Area */
.upload-area {
border: 2px dashed rgba(139, 92, 246, 0.3);
border-radius: 16px;
padding: 48px 32px;
text-align: center;
cursor: pointer;
transition: all 0.3s ease;
background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
position: relative;
overflow: hidden;
}
.upload-area::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
opacity: 0;
transition: opacity 0.3s ease;
}
.upload-area:hover, .upload-area.dragover {
border-color: var(--accent-purple);
transform: translateY(-2px);
box-shadow: 0 20px 40px rgba(139, 92, 246, 0.2);
}
.upload-area:hover::before, .upload-area.dragover::before {
opacity: 1;
}
.upload-icon {
font-size: 64px;
margin-bottom: 16px;
background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-cyan) 100%);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
position: relative;
z-index: 1;
}
.upload-text {
color: var(--text-secondary);
font-size: 16px;
position: relative;
z-index: 1;
}
.upload-text strong {
color: var(--text-primary);
font-weight: 600;
}
#fileInput { display: none; }
/* Share Password Area */
.share-password-area {
margin-top: 24px;
padding: 20px;
background: rgba(139, 92, 246, 0.08);
border: 1px solid rgba(139, 92, 246, 0.2);
border-radius: 12px;
}
.share-password-label {
display: flex;
align-items: center;
gap: 8px;
font-size: 14px;
font-weight: 600;
color: var(--accent-purple);
margin-bottom: 12px;
}
.share-password-input {
width: 100%;
padding: 12px 16px;
background: rgba(0, 0, 0, 0.3);
border: 1px solid var(--border-color);
border-radius: 10px;
font-size: 14px;
color: var(--text-primary);
transition: all 0.2s ease;
}
.share-password-input:focus {
outline: none;
border-color: var(--accent-purple);
box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}
.share-password-input::placeholder {
color: var(--text-secondary);
}
.share-password-hint {
font-size: 12px;
color: var(--text-secondary);
margin-top: 8px;
display: flex;
align-items: center;
gap: 6px;
}
/* File List */
.file-list {
margin-top: 32px;
border-top: 1px solid var(--border-color);
padding-top: 24px;
}
.file-list-title {
font-size: 18px;
font-weight: 600;
color: var(--text-primary);
margin-bottom: 20px;
display: flex;
align-items: center;
gap: 10px;
}
.file-list-title span:last-child {
background: var(--accent-purple);
color: white;
padding: 2px 10px;
border-radius: 20px;
font-size: 12px;
font-weight: 500;
}
.file-items {
display: flex;
flex-direction: column;
gap: 12px;
}
.file-item {
background: rgba(0, 0, 0, 0.3);
border: 1px solid var(--border-color);
border-radius: 12px;
padding: 16px;
transition: all 0.2s ease;
}
.file-item:hover {
border-color: rgba(139, 92, 246, 0.3);
background: rgba(139, 92, 246, 0.05);
}
.file-item-header {
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
gap: 12px;
margin-bottom: 12px;
}
.file-name {
font-weight: 500;
color: var(--text-primary);
word-break: break-all;
flex: 1;
display: flex;
align-items: center;
gap: 8px;
}
.file-name::before {
content: '📄';
}
.file-size {
font-size: 12px;
color: var(--text-secondary);
background: rgba(255, 255, 255, 0.05);
padding: 4px 12px;
border-radius: 20px;
font-weight: 500;
}
.file-status {
font-size: 12px;
padding: 4px 12px;
border-radius: 20px;
font-weight: 500;
background: rgba(255, 255, 255, 0.05);
color: var(--text-secondary);
}
.file-status.success {
background: rgba(16, 185, 129, 0.15);
color: var(--success);
}
.file-status.error {
background: rgba(239, 68, 68, 0.15);
color: var(--error);
}
.file-status.uploading {
background: rgba(139, 92, 246, 0.15);
color: var(--accent-purple);
}
.progress-bar-container {
height: 6px;
background: rgba(255, 255, 255, 0.05);
border-radius: 3px;
overflow: hidden;
margin: 12px 0;
}
.progress-bar-fill {
height: 100%;
background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
width: 0%;
transition: width 0.3s ease;
border-radius: 3px;
}
.file-result {
margin-top: 16px;
display: flex;
flex-wrap: wrap;
gap: 10px;
align-items: center;
background: rgba(16, 185, 129, 0.08);
padding: 16px;
border-radius: 10px;
border: 1px solid rgba(16, 185, 129, 0.2);
}
.download-link-input {
flex: 2;
min-width: 200px;
padding: 10px 14px;
background: rgba(0, 0, 0, 0.4);
border: 1px solid var(--border-color);
border-radius: 8px;
font-size: 13px;
color: var(--text-primary);
font-family: monospace;
}
.btn-sm {
padding: 8px 16px;
font-size: 13px;
border: none;
border-radius: 8px;
cursor: pointer;
transition: all 0.2s ease;
display: inline-flex;
align-items: center;
gap: 6px;
font-weight: 500;
}
.btn-copy {
background: var(--accent-blue);
color: white;
}
.btn-copy:hover {
background: #2563eb;
transform: translateY(-1px);
box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}
.btn-qr {
background: var(--accent-purple);
color: white;
}
.btn-qr:hover {
background: #7c3aed;
transform: translateY(-1px);
box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}
.password-badge {
background: rgba(245, 158, 11, 0.15);
color: var(--warning);
padding: 4px 12px;
border-radius: 20px;
font-size: 11px;
font-weight: 500;
display: inline-flex;
align-items: center;
gap: 4px;
}
.qr-container {
margin-top: 12px;
display: inline-block;
background: white;
padding: 12px;
border-radius: 12px;
box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.qr-canvas {
display: block;
width: 100px;
height: 100px;
}
/* Toast */
.toast {
position: fixed;
top: 24px;
right: 24px;
padding: 16px 24px;
border-radius: 12px;
color: white;
font-weight: 500;
z-index: 1000;
animation: slideIn 0.3s ease;
max-width: 400px;
font-size: 14px;
backdrop-filter: blur(20px);
border: 1px solid rgba(255, 255, 255, 0.1);
}
.toast.success {
background: rgba(16, 185, 129, 0.9);
box-shadow: 0 8px 32px rgba(16, 185, 129, 0.3);
}
.toast.error {
background: rgba(239, 68, 68, 0.9);
box-shadow: 0 8px 32px rgba(239, 68, 68, 0.3);
}
.toast.info {
background: rgba(59, 130, 246, 0.9);
box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3);
}
@keyframes slideIn {
from { transform: translateX(100%); opacity: 0; }
to { transform: translateX(0); opacity: 1; }
}
/* Password Modal */
.password-modal {
position: fixed;
top: 0; left: 0; right: 0; bottom: 0;
background: rgba(0, 0, 0, 0.8);
backdrop-filter: blur(10px);
display: flex;
align-items: center;
justify-content: center;
z-index: 2000;
}
.password-box {
background: var(--bg-card);
backdrop-filter: blur(20px);
border: 1px solid var(--border-color);
padding: 40px;
border-radius: 20px;
text-align: center;
max-width: 420px;
width: 90%;
box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}
.password-box h2 {
margin-bottom: 8px;
color: var(--text-primary);
font-size: 1.5rem;
}
.password-box p {
color: var(--text-secondary);
margin-bottom: 24px;
font-size: 14px;
}
.password-input {
width: 100%;
padding: 14px 18px;
background: rgba(0, 0, 0, 0.4);
border: 1px solid var(--border-color);
border-radius: 12px;
font-size: 16px;
color: var(--text-primary);
margin-bottom: 20px;
transition: all 0.2s ease;
}
.password-input:focus {
outline: none;
border-color: var(--accent-purple);
box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}
.password-input::placeholder {
color: var(--text-secondary);
}
.btn-primary {
width: 100%;
padding: 14px 24px;
background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-blue) 100%);
color: white;
border: none;
border-radius: 12px;
font-size: 16px;
font-weight: 600;
cursor: pointer;
transition: all 0.2s ease;
}
.btn-primary:hover {
transform: translateY(-2px);
box-shadow: 0 8px 24px rgba(139, 92, 246, 0.4);
}
.hidden { display: none !important; }
.text-muted { color: var(--text-secondary); font-size: 12px; }
/* Empty State */
.empty-state {
text-align: center;
padding: 48px 20px;
color: var(--text-secondary);
}
.empty-state-icon {
font-size: 48px;
margin-bottom: 16px;
opacity: 0.5;
}
/* Animations */
@keyframes pulse {
0%, 100% { opacity: 1; }
50% { opacity: 0.5; }
}
.animate-pulse {
animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
/* Responsive */
@media (max-width: 640px) {
body { padding: 16px; }
.header h1 { font-size: 1.75rem; }
.card { padding: 20px; }
.stats-grid { grid-template-columns: repeat(2, 1fr); }
}
</style>
</head>
<body>
<div class="container">
<div class="header">
<h1>📁 文件中转站</h1>
<p>安全、快速的文件分享服务</p>
</div>
<!-- Stats Grid -->
<div class="stats-grid">
<div class="stat-card">
<div class="stat-label">文件大小限制</div>
<div class="stat-value purple">${formatSize(CONFIG.MAX_FILE_SIZE)}</div>
</div>
<div class="stat-card">
<div class="stat-label">文件过期时间</div>
<div class="stat-value cyan">${CONFIG.FILE_EXPIRE_TIME ? Math.floor(CONFIG.FILE_EXPIRE_TIME / 86400000) + '天' : '永久'}</div>
</div>
<div class="stat-card">
<div class="stat-label">下载链接有效期</div>
<div class="stat-value pink">5分钟</div>
</div>
</div>
<div id="passwordModal" class="password-modal hidden">
<div class="password-box">
<div style="font-size: 64px; margin-bottom: 16px;">🔐</div>
<h2>访问受限</h2>
<p>请输入访问密码以继续使用</p>
<input type="password" class="password-input" id="passwordInput" placeholder="输入密码..." autofocus>
<button class="btn-primary" onclick="verifyPassword()">进入系统</button>
</div>
</div>
<div class="card">
<div class="upload-area" id="uploadArea">
<div class="upload-icon">☁️</div>
<div class="upload-text">
<strong>点击或拖拽文件</strong> 到此处上传<br>
<small style="opacity: 0.6; margin-top: 8px; display: inline-block;">支持多文件同时上传</small>
</div>
</div>
<input type="file" id="fileInput" multiple>
<!-- 分享密码输入区域 -->
<div class="share-password-area">
<label class="share-password-label">
<span>🔐</span>
<span>分享密码（可选）</span>
</label>
<input type="text" id="sharePasswordInput" class="share-password-input" placeholder="设置密码后，他人下载文件时需要输入此密码" autocomplete="off">
<div class="share-password-hint">
<span>💡</span>
<span>留空则不设置密码保护，此密码将应用于本次上传的所有文件</span>
</div>
</div>
<div class="file-list" id="fileListContainer">
<div class="file-list-title">
<span>📋 上传记录</span>
<span id="uploadCountBadge"></span>
</div>
<div id="fileItemsList" class="file-items">
<div class="empty-state">
<div class="empty-state-icon">📂</div>
<div>暂无上传文件，请选择文件开始</div>
</div>
</div>
</div>
</div>
</div>
<script>
const CONFIG = ${JSON.stringify(CONFIG)};
let currentUploadTasks = [];
let activeUploads = 0;
let pendingQueue = [];
let fileItemsMap = new Map();
function formatSize(bytes) {
if (bytes === 0) return '0 B';
const k = 1024;
const sizes = ['B', 'KB', 'MB', 'GB'];
const i = Math.floor(Math.log(bytes) / Math.log(k));
return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
}
function generateFileId() {
return Date.now() + '-' + Math.random().toString(36).substr(2, 8);
}
function showToast(message, type = 'info') {
const toast = document.createElement('div');
toast.className = 'toast ' + type;
toast.textContent = message;
document.body.appendChild(toast);
setTimeout(() => toast.remove(), 3000);
}
function generateQRCode(text, container) {
if (!container) return;
container.innerHTML = '';
if (!text) return;
try {
const qr = qrcode(0, 'M');
qr.addData(text);
qr.make();
const cellSize = 4;
const margin = 2;
const size = qr.getModuleCount() * cellSize + margin * 2;
const canvas = document.createElement('canvas');
canvas.width = size;
canvas.height = size;
canvas.style.width = '80px';
canvas.style.height = '80px';
const ctx = canvas.getContext('2d');
ctx.fillStyle = '#ffffff';
ctx.fillRect(0, 0, size, size);
ctx.fillStyle = '#000000';
for (let row = 0; row < qr.getModuleCount(); row++) {
for (let col = 0; col < qr.getModuleCount(); col++) {
if (qr.isDark(row, col)) {
ctx.fillRect(
col * cellSize + margin,
row * cellSize + margin,
cellSize,
cellSize
);
}
}
}
canvas.className = 'qr-canvas';
container.appendChild(canvas);
} catch (err) {
console.error('QR生成失败', err);
container.innerHTML = '<span class="text-muted">❌ 二维码失败</span>';
}
}
async function copyToClipboard(text, successMsg = '链接已复制') {
try {
await navigator.clipboard.writeText(text);
showToast(successMsg, 'success');
} catch (err) {
showToast('复制失败，请手动复制', 'error');
}
}
function updateUploadCountBadge() {
const items = document.querySelectorAll('.file-item');
const badge = document.getElementById('uploadCountBadge');
if (badge) badge.innerText = items.length ? String(items.length) : '';
// 处理空状态显示
const listContainer = document.getElementById('fileItemsList');
const emptyState = listContainer.querySelector('.empty-state');
if (items.length === 0) {
if (!emptyState) {
listContainer.innerHTML = '<div class="empty-state"><div class="empty-state-icon">📂</div><div>暂无上传文件，请选择文件开始</div></div>';
}
} else if (emptyState) {
emptyState.remove();
}
}
function createFileItemDOM(file, fileId) {
const itemDiv = document.createElement('div');
itemDiv.className = 'file-item';
itemDiv.dataset.fileId = fileId;
const fileSize = formatSize(file.size);
const headerHtml = '<div class="file-item-header"><span class="file-name" title="' + file.name + '">' + file.name + '</span><span class="file-size">' + fileSize + '</span><span class="file-status" id="status-' + fileId + '">等待中</span></div><div class="progress-bar-container" id="progressContainer-' + fileId + '"><div class="progress-bar-fill" id="progressFill-' + fileId + '" style="width:0%"></div></div>';
itemDiv.innerHTML = headerHtml;
const resultDiv = document.createElement('div');
resultDiv.id = 'result-' + fileId;
resultDiv.className = 'file-result';
resultDiv.style.display = 'none';
itemDiv.appendChild(resultDiv);
return itemDiv;
}
function updateFileStatus(fileId, statusText, statusType = 'uploading') {
const statusSpan = document.getElementById('status-' + fileId);
if (statusSpan) {
statusSpan.innerText = statusText;
statusSpan.className = 'file-status ' + statusType;
}
}
function updateProgress(fileId, percent) {
const fill = document.getElementById('progressFill-' + fileId);
if (fill) fill.style.width = percent + '%';
}
function showUploadResult(fileId, downloadUrl, fileName, hasPassword) {
const resultDiv = document.getElementById('result-' + fileId);
if (!resultDiv) return;
const progressContainer = document.getElementById('progressContainer-' + fileId);
if (progressContainer) progressContainer.style.display = 'none';
const linkId = 'link-' + fileId;
const qrContainerId = 'qr-' + fileId;
const passwordBadge = hasPassword ? '<span class="password-badge">🔒 密码保护</span>' : '';
resultDiv.innerHTML = '<input type="text" id="' + linkId + '" class="download-link-input" value="' + downloadUrl + '" readonly><button class="btn-sm btn-copy" data-url="' + downloadUrl + '">📋 复制</button><button class="btn-sm btn-qr" data-qrid="' + qrContainerId + '" data-url="' + downloadUrl + '">🔲 二维码</button>' + passwordBadge + '<div id="' + qrContainerId + '" class="qr-container hidden"></div>';
resultDiv.style.display = 'flex';
resultDiv.style.flexWrap = 'wrap';
const copyBtn = resultDiv.querySelector('.btn-copy');
if (copyBtn) {
copyBtn.addEventListener('click', (e) => {
e.stopPropagation();
copyToClipboard(downloadUrl, '下载链接已复制');
});
}
const qrBtn = resultDiv.querySelector('.btn-qr');
const qrContainer = resultDiv.querySelector(\`.qr-container\`);
if (qrBtn && qrContainer) {
qrBtn.addEventListener('click', () => {
if (qrContainer.classList.contains('hidden')) {
generateQRCode(downloadUrl, qrContainer);
qrContainer.classList.remove('hidden');
qrBtn.innerText = '🔲 隐藏二维码';
} else {
qrContainer.classList.add('hidden');
qrBtn.innerText = '🔲 显示二维码';
}
});
}
}
// 上传单个分片（带重试）
async function uploadChunk(fileId, chunk, chunkIndex, totalChunks, retries = 3) {
const formData = new FormData();
formData.append('chunk', chunk);
for (let attempt = 0; attempt < retries; attempt++) {
try {
const res = await fetch('/api/multipart/upload?fileId=' + fileId + '&chunkIndex=' + chunkIndex, {
method: 'POST',
body: chunk
});
if (!res.ok) {
const error = await res.json().catch(() => ({ error: 'Unknown error' }));
throw new Error(error.error || '上传失败');
}
const data = await res.json();
return data;
} catch (err) {
if (attempt === retries - 1) throw err;
// 等待后重试（指数退避）
await new Promise(r => setTimeout(r, Math.pow(2, attempt) * 1000));
}
}
}
// 分片上传
async function uploadFileMultipart(file, fileId, sharePassword, serverFileId) {
const chunkSize = CONFIG.CHUNK_SIZE || 50 * 1024 * 1024;
const totalChunks = Math.ceil(file.size / chunkSize);
updateFileStatus(fileId, '初始化分片...', 'uploading');
// 初始化分片上传
const initRes = await fetch('/api/multipart/create', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
fileId: serverFileId,
totalChunks: totalChunks
})
});
if (!initRes.ok) {
throw new Error('初始化分片上传失败');
}
// 上传所有分片
let uploadedChunks = 0;
const maxConcurrent = 2; // 同时上传的分片数
const chunks = [];
for (let i = 0; i < totalChunks; i++) {
const start = i * chunkSize;
const end = Math.min(start + chunkSize, file.size);
chunks.push({
index: i,
blob: file.slice(start, end)
});
}
// 并发上传控制
const uploadChunkBatch = async (batch) => {
await Promise.all(batch.map(async (chunkInfo) => {
try {
await uploadChunk(serverFileId, chunkInfo.blob, chunkInfo.index, totalChunks);
uploadedChunks++;
const percent = (uploadedChunks / totalChunks * 100).toFixed(1);
updateProgress(fileId, percent);
updateFileStatus(fileId, '分片 ' + uploadedChunks + '/' + totalChunks, 'uploading');
} catch (err) {
throw new Error('分片 ' + chunkInfo.index + ' 上传失败: ' + err.message);
}
}));
};
// 分批上传
for (let i = 0; i < chunks.length; i += maxConcurrent) {
const batch = chunks.slice(i, i + maxConcurrent);
await uploadChunkBatch(batch);
}
// 完成分片上传
updateFileStatus(fileId, '合并分片...', 'uploading');
const completeRes = await fetch('/api/multipart/complete', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ fileId: serverFileId })
});
if (!completeRes.ok) {
const error = await completeRes.json().catch(() => ({ error: '合并失败' }));
throw new Error(error.error || '合并分片失败');
}
return await completeRes.json();
}
// 取消分片上传
async function abortMultipartUpload(serverFileId) {
try {
await fetch('/api/multipart/abort', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ fileId: serverFileId })
});
} catch (e) {
console.error('取消上传失败:', e);
}
}
async function uploadFile(file, fileId, sharePassword) {
const container = document.getElementById('progressContainer-' + fileId);
if (!container) return;
updateFileStatus(fileId, '检查中...', 'uploading');
if (file.size > CONFIG.MAX_FILE_SIZE) {
updateFileStatus(fileId, '过大 (' + formatSize(file.size) + ')', 'error');
showToast(file.name + ' 超过限制', 'error');
return;
}
if (CONFIG.ALLOWED_TYPES.length > 0 && !CONFIG.ALLOWED_TYPES.includes(file.type)) {
updateFileStatus(fileId, '不支持类型', 'error');
showToast(file.name + ' 文件类型不允许', 'error');
return;
}
let serverFileId = null;
try {
updateFileStatus(fileId, '获取上传凭证...', 'uploading');
const res = await fetch('/api/upload-url', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
filename: file.name,
size: file.size,
type: file.type,
password: sharePassword || null
})
});
const data = await res.json();
if (!res.ok || data.error) throw new Error(data.error || '获取上传链接失败');
const { uploadUrl, downloadUrl, hasPassword, useMultipart } = data;
serverFileId = data.fileId;
if (useMultipart) {
// 分片上传（大文件）
const result = await uploadFileMultipart(file, fileId, sharePassword, serverFileId);
updateFileStatus(fileId, '✅ 成功', 'success');
updateProgress(fileId, 100);
showUploadResult(fileId, result.downloadUrl || downloadUrl, file.name, hasPassword);
showToast(file.name + ' 上传成功', 'success');