feat: 重构为 Monorepo 架构并实现 HTTP Server
架构变更: - 采用 pnpm workspaces 实现 Monorepo 结构 - 将现有代码迁移到 packages/core - 新增 packages/server HTTP 服务层 Server 功能: - REST API: 会话管理、工具管理、配置管理 - WebSocket: 实时双向通信支持 - SSE: 服务端事件推送 - Hono + Bun 作为运行时 API 端点: - GET/POST /api/sessions - 会话 CRUD - GET/POST /api/sessions/:id/messages - 消息管理 - GET /api/sessions/:id/events - SSE 事件流 - WS /api/ws/:sessionId - WebSocket 连接 - GET/POST /api/tools - 工具管理 - GET/PUT /api/config - 配置管理
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/**
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* 图片处理工具
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*
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* 提供图片文件读取、格式检测、base64 编码等功能
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*/
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import * as fs from 'fs/promises';
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import * as path from 'path';
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/** 支持的图片扩展名 */
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export const IMAGE_EXTENSIONS = ['.png', '.jpg', '.jpeg', '.gif', '.webp'];
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/** 图片 MIME 类型映射 */
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const MIME_TYPES: Record<string, string> = {
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'.png': 'image/png',
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'.jpg': 'image/jpeg',
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'.jpeg': 'image/jpeg',
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'.gif': 'image/gif',
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'.webp': 'image/webp',
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};
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/** 图片信息 */
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export interface ImageInfo {
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/** 原始文件路径 */
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path: string;
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/** 文件名 */
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filename: string;
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/** 扩展名 */
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extension: string;
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/** MIME 类型 */
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mimeType: string;
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/** 文件大小（字节） */
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size: number;
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/** base64 编码的数据 */
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base64: string;
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/** 完整的 data URL */
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dataUrl: string;
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}
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/** 图片加载结果 */
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export interface ImageLoadResult {
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success: boolean;
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image?: ImageInfo;
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error?: string;
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}
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/**
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* 判断文件路径是否为图片
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*/
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export function isImagePath(filePath: string): boolean {
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const ext = path.extname(filePath).toLowerCase();
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return IMAGE_EXTENSIONS.includes(ext);
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}
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/**
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* 从输入文本中提取图片引用
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* 支持多种格式:
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* 1. @path/to/image.png（不带空格的路径）
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* 2. @"path/to/image with spaces.png"（带空格的路径用引号包裹）
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* 3. @/path/to/image.png（绝对路径，自动匹配到图片扩展名结束）
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*
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* @param input 用户输入
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* @returns 图片路径列表和去除图片引用后的文本
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*/
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export function extractImageReferences(input: string): {
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imagePaths: string[];
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textContent: string;
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} {
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const imagePaths: string[] = [];
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let textContent = input;
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// 模式1: 带引号的路径 @"path/to/image.png" 或 @'path/to/image.png'
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const quotedMatches = [...input.matchAll(/@["']([^"']+\.(?:png|jpg|jpeg|gif|webp))["']/gi)];
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for (const match of quotedMatches) {
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imagePaths.push(match[1]);
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textContent = textContent.replace(match[0], ' ');
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}
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// 模式2: 绝对路径（以 / 或 ~ 开头，匹配到图片扩展名结束）
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// 支持路径中包含空格
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const absoluteMatches = [...textContent.matchAll(/@([/~][^\n]*?\.(?:png|jpg|jpeg|gif|webp))(?=\s|$)/gi)];
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for (const match of absoluteMatches) {
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if (!imagePaths.includes(match[1])) {
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imagePaths.push(match[1]);
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textContent = textContent.replace(match[0], ' ');
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}
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}
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// 模式3: 相对路径（不以 / 开头，不包含空格）
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const relativeMatches = [...textContent.matchAll(/@((?:\.\/|\.\.\/)?[^\s@"'/][^\s@"']*\.(?:png|jpg|jpeg|gif|webp))/gi)];
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for (const match of relativeMatches) {
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if (!imagePaths.includes(match[1])) {
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imagePaths.push(match[1]);
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textContent = textContent.replace(match[0], ' ');
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}
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}
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// 清理多余空格
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textContent = textContent.replace(/\s+/g, ' ').trim();
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return { imagePaths, textContent };
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}
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/**
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* 加载图片文件
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* @param filePath 图片路径（相对或绝对）
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* @param workdir 工作目录（用于解析相对路径）
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*/
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export async function loadImage(
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filePath: string,
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workdir: string = process.cwd()
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): Promise<ImageLoadResult> {
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try {
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// 解析路径
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const absolutePath = path.isAbsolute(filePath)
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? filePath
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: path.resolve(workdir, filePath);
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// 检查扩展名
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const ext = path.extname(absolutePath).toLowerCase();
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if (!IMAGE_EXTENSIONS.includes(ext)) {
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return {
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success: false,
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error: `不支持的图片格式: ${ext}。支持的格式: ${IMAGE_EXTENSIONS.join(', ')}`,
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};
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}
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// 读取文件
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const buffer = await fs.readFile(absolutePath);
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const stats = await fs.stat(absolutePath);
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// 转换为 base64
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const base64 = buffer.toString('base64');
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const mimeType = MIME_TYPES[ext] || 'application/octet-stream';
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const dataUrl = `data:${mimeType};base64,${base64}`;
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return {
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success: true,
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image: {
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path: absolutePath,
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filename: path.basename(absolutePath),
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extension: ext,
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mimeType,
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size: stats.size,
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base64,
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dataUrl,
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},
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};
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} catch (error) {
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if ((error as NodeJS.ErrnoException).code === 'ENOENT') {
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return {
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success: false,
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error: `图片文件不存在: ${filePath}`,
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};
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}
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return {
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success: false,
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error: `加载图片失败: ${error instanceof Error ? error.message : String(error)}`,
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};
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}
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}
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/**
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* 批量加载图片
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* @param filePaths 图片路径列表
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* @param workdir 工作目录
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*/
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export async function loadImages(
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filePaths: string[],
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workdir: string = process.cwd()
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): Promise<{
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images: ImageInfo[];
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errors: Array<{ path: string; error: string }>;
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}> {
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const images: ImageInfo[] = [];
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const errors: Array<{ path: string; error: string }> = [];
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for (const filePath of filePaths) {
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const result = await loadImage(filePath, workdir);
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if (result.success && result.image) {
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images.push(result.image);
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} else {
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errors.push({ path: filePath, error: result.error || '未知错误' });
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}
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}
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return { images, errors };
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}
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/**
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* 格式化文件大小
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*/
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export function formatFileSize(bytes: number): string {
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if (bytes < 1024) {
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return `${bytes}B`;
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} else if (bytes < 1024 * 1024) {
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return `${(bytes / 1024).toFixed(1)}KB`;
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} else {
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return `${(bytes / (1024 * 1024)).toFixed(1)}MB`;
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}
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}
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