#!/usr/bin/env node
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import { loadConfig } from '../config.ts';
import { SessionKeepalive } from '../keepalive.ts';
import { SchulcloudClient } from '../schulcloud/client.ts';
import { createServer } from '../server.ts';

/**
 * stdio entry point — for running the server locally against Claude Code or
 * Claude Desktop. The remote deployment uses bin/http.ts instead.
 *
 * Nothing may be written to stdout here except MCP protocol frames.
 */
async function main(): Promise<void> {
	const config = loadConfig();
	const { server } = createServer(config);
	await server.connect(new StdioServerTransport());

	// A desktop client left open overnight idles far past the instance's 2h
	// session timeout, so stdio needs the keepalive just as much as HTTP does.
	// It logs to stderr; stdout carries protocol frames only.
	if (config.keepaliveIntervalMs > 0) {
		new SessionKeepalive(new SchulcloudClient(config), config.keepaliveIntervalMs).start();
	}

	console.error(`[schulcloud-mcp] stdio transport ready for ${config.baseUrl}`);
}

main().catch((error: unknown) => {
	console.error('[schulcloud-mcp] fatal:', error);
	process.exit(1);
});