import "dotenv/config"; /** * 🛰️ GLOBAL STABILIZATION (April 2026): Catch unhandled errors that cause HF Space restarts. */ process.on('uncaughtException', (err: Error) => { console.error('[FATAL:EXCEPTION]', err); }); process.on('unhandledRejection', (reason: unknown) => { console.error('[FATAL:REJECTION]', reason); }); import { createServer, IncomingMessage, ServerResponse, ClientRequest } from "http"; import next from "next"; import { Server } from "socket.io"; import { WebSocketServer, WebSocket } from "ws"; import * as Y from "yjs"; import * as awarenessProtocol from "y-protocols/awareness"; import * as syncProtocol from "y-protocols/sync"; import * as encoding from "lib0/encoding"; import * as decoding from "lib0/decoding"; import * as map from "lib0/map"; import * as pty from "node-pty"; import * as os from "os"; import { Duplex } from "stream"; import { startAutoSleepCron } from "./lib/jobs/auto-sleep"; import { getWorkspacePort, isWorkspaceRunning, prewarmWorkspace, reconnectRunningWorkspaces } from "./lib/docker/manager"; import { initDb } from "./lib/db/schema"; import { client as dbClient } from "./lib/db"; import { HFStorage } from "./lib/hf/storage"; import { ENV_CONFIG, validateEnvironment } from "./lib/env-config"; import httpProxy from "http-proxy"; import { APP_CONFIG, INFRA_CONFIG, UI_STRINGS } from "./constants"; process.env.TMPDIR = ENV_CONFIG.TMPDIR; process.env.HF_HOME = ENV_CONFIG.HF_HOME; if (!process.env.HOME) process.env.HOME = '/home/node'; const dev = process.env.NODE_ENV !== "production"; const app = next({ dev }); const handle = app.getRequestHandler(); const docs = new Map(); const getOrCreateDoc = (docName: string) => { return map.setIfUndefined(docs, docName, () => { const doc = new Y.Doc(); const awareness = new awarenessProtocol.Awareness(doc); return { doc, awareness }; }); }; const proxy = httpProxy.createProxyServer({ ws: true, xfwd: true, timeout: 30000, proxyTimeout: 30000 }); interface WorkspaceRequestContext { host: string; pathname: string; id: string | null; } function getWorkspaceRequestContext(req: IncomingMessage): WorkspaceRequestContext { const host = req.headers.host || 'localhost'; const fullUrl = new URL(req.url || '/', `http://${host}`); const pathname = fullUrl.pathname; const workspaceHostMatch = host.match(/^workspace-([a-zA-Z0-9-]+)\./); const id = workspaceHostMatch ? workspaceHostMatch[1] : (pathname.startsWith('/workspace/') ? pathname.split('/')[2] ?? null : null); return { host, pathname, id }; } function prepareWorkspaceProxyRequest(req: IncomingMessage, id: string): void { req.headers['x-codeverse-id'] = id; req.headers['x-codeverse-type'] = 'workspace'; const prefix = `/workspace/${id}`; if (req.url?.startsWith(prefix)) { req.url = req.url.substring(prefix.length); if (!req.url.startsWith('/')) { req.url = `/${req.url}`; } } } function renderProxyError(res: ServerResponse, error: string, id: string) { res.writeHead(502, { 'Content-Type': 'text/html' }); res.end(` Workspace Connection Failure

Workspace Connection Restricted

Native isolation link for ${id} failed.

Diagnostic: ${error}
Target: Hugging Face Space (Sandboxed)

Auto-Repair & Boot

`); } proxy.on("error", (err: Error, req: IncomingMessage, res: ServerResponse | Duplex) => { const host = req.headers.host || ""; const fullUrl = new URL(req.url || "/", `http://${host}`); const pathname = fullUrl.pathname; const headerId = req.headers['x-codeverse-id'] as string; const workspaceHostMatch = host.match(/^workspace-([a-zA-Z0-9-]+)\./); const id = headerId || (workspaceHostMatch ? workspaceHostMatch[1] : (pathname.split("/")[2] || "unknown")); console.error(`[Proxy Connection Error] ${err.message} for workspace/${id}`); if (res instanceof ServerResponse) { if (!res.headersSent) { renderProxyError(res, err.message, id); } else { res.end(); } } }); proxy.on("proxyReq", (proxyReq: ClientRequest, req: IncomingMessage) => { const id = req.headers['x-codeverse-id'] as string; const type = req.headers['x-codeverse-type'] as string; if (id && type) { proxyReq.setHeader('x-codeverse-id', id); proxyReq.setHeader('x-codeverse-type', type); } }); proxy.on("proxyReqWs", (proxyReq: ClientRequest, req: IncomingMessage) => { const id = req.headers['x-codeverse-id'] as string; const type = req.headers['x-codeverse-type'] as string; if (id && type) { proxyReq.setHeader('x-codeverse-id', id); proxyReq.setHeader('x-codeverse-type', type); } }); proxy.on("proxyRes", (proxyRes: IncomingMessage, req: IncomingMessage) => { const id = req.headers['x-codeverse-id'] as string; const type = req.headers['x-codeverse-type'] as string; if (id && type && proxyRes.headers.location) { const originalLocation = proxyRes.headers.location; if (originalLocation.startsWith('/') && !originalLocation.startsWith(`/${type}/${id}`)) { proxyRes.headers.location = `/${type}/${id}${originalLocation}`; } } }); // Port and Host logic const PORT = Number(process.env.PORT) || 7860; const HOST = '0.0.0.0'; let isAppReady = false; let envStatus = { valid: true, missing: [] as string[] }; /** *Autoritative Entrypoint: We initialize the HTTP server immediately to satisfy HF Spaces health checks. */ const server = createServer((req: IncomingMessage, res: ServerResponse) => { const { pathname, id } = getWorkspaceRequestContext(req); // 1. Initializing State if (!isAppReady && !pathname.startsWith("/_next/static") && pathname !== "/favicon.ico") { res.writeHead(200, { 'Content-Type': 'text/html' }); return res.end(` CodeVerse | Initializing

CodeVerse is waking up

Restoring your environment and securing persistent volumes...

`); } // 2. Maintenance / Misconfiguration State if (isAppReady && !envStatus.valid && pathname !== "/api/health" && !pathname.startsWith("/_next/")) { res.writeHead(503, { 'Content-Type': 'text/html' }); return res.end(`

Infrastructure Error

${UI_STRINGS.MAINTENANCE_MESSAGE}

${m}

`); } // 3. Workspace Proxying if (id) { const isRunning = isWorkspaceRunning(id); if (isRunning) { const port = getWorkspacePort(id); if (port) { prepareWorkspaceProxyRequest(req, id); return proxy.web(req, res, { target: `http://127.0.0.1:${port}`, changeOrigin: true }); } } else if (!pathname?.startsWith("/api/")) { // 🚑 WORKSPACE OFFLINE OR BOOTING: Detect if it's truly gone or just waking up res.writeHead(503, { 'Content-Type': 'text/html', 'Retry-After': '5' }); return res.end(` CodeVerse | Workspace Status

Provisioning Environment

We're restoring your workspace from cold storage. This usually takes 30-60 seconds depending on the Nix profile complexity.

Return to Dashboard

`); } } // 4. Default Next.js Handle handle(req, res); }); // Setup Sockets const io = new Server(server, { path: "/api/socketio" }); const shoket = new WebSocketServer({ noServer: true }); // Start Listening Immediately server.listen(PORT, HOST, () => { console.log('----------------------------------------------------'); console.log(`[READY] ${APP_CONFIG.NAME} ${APP_CONFIG.VERSION}`); console.log(`[READY] Interface: ${HOST}:${PORT}`); console.log('----------------------------------------------------'); }); // Background Async Initialization (async () => { try { console.log("[BOOT] Starting Next.js preparation..."); await app.prepare(); console.log("[BOOT] Next.js payload ready."); envStatus = validateEnvironment(); if (envStatus.valid) { console.log("[BOOT] Environment validated. Synchronizing database..."); await initDb(dbClient); console.log("[BOOT] Database synchronized."); // Reconnect and Warmup reconnectRunningWorkspaces().catch(() => {}); if (process.env.ENABLE_BASELINE_PREWARM === 'true') { prewarmWorkspace({ id: 'baseline-warmup', userId: 'system', projectName: 'CodeVerse-Internal' }).catch(() => {}); } // Crons and Persistence HFStorage.startAutoSave(INFRA_CONFIG.PERSISTENCE_INTERVAL_MS * 5); startAutoSleepCron(); } isAppReady = true; console.log("[BOOT] Global state stabilized. Application is fully operational."); } catch (err) { console.error("[BOOT:ERROR] Fatal initialization failure:", err); } })(); // Terminal and Collaboration Handlers server.on("upgrade", (req, socket, head) => { const { pathname, id } = getWorkspaceRequestContext(req); if (pathname === "/api/collab") { shoket.handleUpgrade(req, socket, head, (ws) => { shoket.emit("connection", ws, req); }); return; } if (id && isWorkspaceRunning(id)) { const port = getWorkspacePort(id); if (!port) { socket.destroy(); return; } prepareWorkspaceProxyRequest(req, id); proxy.ws(req, socket, head, { target: `ws://127.0.0.1:${port}`, changeOrigin: true }); return; } socket.destroy(); }); shoket.on("connection", (conn: WebSocket, request: IncomingMessage) => { const { doc } = getOrCreateDoc(new URL(request.url || "/", "http://l").searchParams.get('doc') || "default"); conn.binaryType = "arraybuffer"; const encoder = encoding.createEncoder(); encoding.writeVarUint(encoder, 0); syncProtocol.writeSyncStep1(encoder, doc); conn.send(encoding.toUint8Array(encoder)); conn.on("message", (message: ArrayBuffer) => { const encoder = encoding.createEncoder(); const decoder = decoding.createDecoder(new Uint8Array(message)); const messageType = decoding.readVarUint(decoder); if (messageType === 0) { encoding.writeVarUint(encoder, 0); syncProtocol.readSyncMessage(decoder, encoder, doc, null); if (encoding.length(encoder) > 1) conn.send(encoding.toUint8Array(encoder)); } }); }); io.on("connection", (socket) => { let shell: pty.IPty | null = null; socket.on("terminal:start", ({ cols, rows }) => { shell = pty.spawn(process.env.SHELL || (os.platform() === "win32" ? "powershell.exe" : "bash"), [], { cols: cols || 80, rows: rows || 24, cwd: ENV_CONFIG.WORKSPACE_ROOT, env: process.env as Record, }); shell.onData((data: string) => socket.emit("terminal:data", data)); }); socket.on("terminal:write", (data) => { if (shell) shell.write(data); }); socket.on("disconnect", () => { if (shell) shell.kill(); }); });