WeLe Agentic AI: LangGraph multi-agent CRM assistant with voice

src/server.js

@@ -0,0 +1,98 @@
+// ============================================
+// WeLe Agentic AI — service entrypoint.
+//
+// Runs alongside the CRM rather than inside it: the CRM stays a CRM, and the
+// assistant can be restarted, scaled or given a second channel without
+// touching it.
+// ============================================
+import express from 'express';
+import helmet from 'helmet';
+import cors from 'cors';
+import config from './config/index.js';
+import logger from './utils/logger.js';
+import { connectMongo, isMongoConnected } from './data/mongo.js';
+import { initRedis, getRedis, redisMode } from './data/redis.js';
+import agentRoutes, { artifactRouter } from './gateway/routes.js';
+import { ensureDir, sweep } from './output/artifactStore.js';
+import crmApi from './tools/http/crmApi.js';
+import { describeChains } from './orchestration/llm.js';
+import { attachVoice } from './gateway/voice.js';
+
+const app = express();
+
+app.use(helmet({ contentSecurityPolicy: false, crossOriginResourcePolicy: false }));
+app.use(cors({ origin: true, credentials: true }));
+app.use(express.json({ limit: '2mb' }));
+
+app.use((req, _res, next) => {
+  if (req.path !== '/health') logger.debug(`${req.method} ${req.path}`);
+  next();
+});
+
+app.get('/health', async (_req, res) => {
+  const crm = await crmApi.health();
+  const redisOk = await getRedis().ping().then(() => true).catch(() => false);
+  const healthy = isMongoConnected();
+  res.status(healthy ? 200 : 503).json({
+    ok: healthy,
+    service: 'wele-agentic-ai',
+    mongo: isMongoConnected() ? 'connected' : 'disconnected',
+    redis: redisOk ? redisMode() : 'unavailable',
+    crm_api: crm.reachable ? 'reachable' : `unreachable (${crm.error || crm.status})`,
+    models: describeChains(),
+    uptime_s: Math.round(process.uptime()),
+  });
+});
+
+app.use('/api/agent', agentRoutes);
+app.use('/artifacts', artifactRouter);
+
+app.use((_req, res) => res.status(404).json({ ok: false, error: 'Not found' }));
+
+// eslint-disable-next-line no-unused-vars
+app.use((err, _req, res, _next) => {
+  logger.error(`unhandled: ${err.stack || err.message}`);
+  res.status(err.status || 500).json({ ok: false, error: err.message || 'Internal error' });
+});
+
+async function start() {
+  const configured = Object.entries(config.llm.providers).filter(([, p]) => p.apiKey).map(([n]) => n);
+  if (!configured.length) {
+    logger.error('No provider API key set (GMI_API_KEY / OPENROUTER_API_KEY) — the assistant cannot run. Add one to .env.');
+    process.exit(1);
+  }
+  logger.info(`   providers : ${configured.join(', ')}`);
+
+  await connectMongo();
+  initRedis();
+  await ensureDir();
+
+  // Housekeeping for expired generated files.
+  sweep();
+  setInterval(sweep, 6 * 3600_000).unref();
+
+  const server = app.listen(config.port, () => {
+    logger.info(`🤖 WeLe Agentic AI on http://localhost:${config.port}`);
+    const chains = describeChains();
+    logger.info(`   supervisor: ${chains.supervisor.join(' → ')}`);
+    logger.info(`   agents:     ${chains.agent.join(' → ')}`);
+    logger.info(`   CRM API   =${config.crmApi.base}`);
+  });
+
+  // Voice is a WebSocket upgrade on the same port, so the browser needs no
+  // second origin and the CRM token works unchanged.
+  attachVoice(server);
+
+  const shutdown = (sig) => {
+    logger.info(`${sig} — shutting down`);
+    server.close(() => process.exit(0));
+    setTimeout(() => process.exit(1), 10_000).unref();
+  };
+  process.on('SIGINT', () => shutdown('SIGINT'));
+  process.on('SIGTERM', () => shutdown('SIGTERM'));
+}
+
+start().catch((err) => {
+  logger.error(`failed to start: ${err.stack || err.message}`);
+  process.exit(1);
+});