#!/usr/bin/env node
import { Logger } from './utils/logger.util.js';
import { stdioTransport } from './server/stdio.js';
import { streamableHttpTransport } from './server/streamableHttp.js';

const logger = Logger.forContext('index.ts');

/**
 * Start the MCP server with the specified transport mode
 */
export async function startServer(): Promise<void> {
	const mainLogger = Logger.forContext('index.ts', 'startServer');

	// Define available transport modes and their handlers
	const transportModes = {
		stdio: { handler: stdioTransport, name: 'stdio' },
		http: { handler: streamableHttpTransport, name: 'http' },
	};

	// Get requested transport mode (default to stdio)
	const requestedMode = (process.env.TRANSPORT_MODE || 'stdio').toLowerCase();
	const transport =
		transportModes[requestedMode as keyof typeof transportModes] ||
		transportModes.stdio;

	// Warn if requested mode is invalid
	if (!transportModes[requestedMode as keyof typeof transportModes]) {
		mainLogger.warn(
			`Unknown TRANSPORT_MODE "${requestedMode}", defaulting to stdio`,
		);
	}

	// Start the selected transport
	mainLogger.info(
		`Starting server with ${transport.name.toUpperCase()} transport`,
	);
	transport.handler();
}

/**
 * Main entry point
 */
async function main() {
	// Server mode - determine transport and start server
	await startServer();
}

// Run main if executed directly
if (require.main === module) {
	main().catch((err) => {
		logger.error('Unhandled error in main process', err);
		process.exit(1);
	});
}