import { Hono } from 'hono';
import { cors } from 'hono/cors';
import { bearerAuth } from 'hono/bearer-auth';
import { StreamableHTTPTransport } from '@hono/mcp';
import { createServer } from './server.js';
type Bindings = {
GOOGLE_CREDENTIALS: string;
MCP_API_TOKEN?: string;
CORS_ORIGIN?: string;
};
const app = new Hono<{ Bindings: Bindings }>();
app.use('/mcp', async (c, next) => {
const origin = c.env.CORS_ORIGIN || '*';
return cors({ origin })(c, next);
});
app.use('/mcp', async (c, next) => {
const token = c.env.MCP_API_TOKEN;
if (token) {
return bearerAuth({ token })(c, next);
}
await next();
});
app.get('/health', (c) => c.json({ status: 'ok' }));
app.all('/mcp', async (c) => {
if (!c.env.GOOGLE_CREDENTIALS) {
return c.json({ error: 'GOOGLE_CREDENTIALS secret is not configured' }, 500);
}
const server = createServer(c.env.GOOGLE_CREDENTIALS);
const transport = new StreamableHTTPTransport({ sessionIdGenerator: undefined });
transport.onclose = () => {
server.close().catch(() => {});
};
await server.connect(transport);
return transport.handleRequest(c);
});
export default app;
