# API 文档

## 认证接口

### POST /api/auth/register
注册新用户

**请求体:**
```json
{
  "username": "string",
  "password": "string",
  "email": "string"
}
```

**响应:**
```json
{
  "token": "string",
  "userId": number
}
```

### POST /api/auth/login
用户登录

**请求体:**
```json
{
  "username": "string",
  "password": "string"
}
```

**响应:**
```json
{
  "token": "string",
  "user": {
    "id": number,
    "username": "string",
    "email": "string",
    "storageUsed": number,
    "storageLimit": number
  }
}
```

## 文件接口

### GET /api/files
获取文件列表

**查询参数:**
- `parentId`: 文件夹ID（可选）

**响应:**
```json
{
  "files": [
    {
      "id": 1,
      "name": "document.pdf",
      "type": "pdf",
      "size": 1024000,
      "is_folder": false,
      "updated_at": "2026-03-10T00:00:00Z"
    }
  ]
}
```

### POST /api/files/upload
上传文件

**请求体:** multipart/form-data

**响应:**
```json
{
  "success": true,
  "fileId": 1,
  "filename": "document.pdf"
}
```

### DELETE /api/files/:id
删除文件

**响应:**
```json
{
  "success": true
}
```

## 分享接口

### POST /api/share
创建分享链接

**请求体:**
```json
{
  "fileId": 1,
  "password": "optional",
  "expiresIn": 86400
}
```

**响应:**
```json
{
  "success": true,
  "shareToken": "abc123",
  "shareUrl": "/share/abc123"
}
```