#!/usr/bin/env node
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import { SingaporeTransportServer } from './server.js';
import { loadEnvironment } from './config/environment.js';
import { logger } from './utils/logger.js';
const PACKAGE_VERSION = '1.0.0';
async function main(): Promise<void> {
try {
// Load and validate environment configuration
const config = loadEnvironment();
logger.info('Starting Singapore Transport MCP Server', {
version: PACKAGE_VERSION,
logLevel: config.logLevel,
cacheDuration: config.cacheDuration,
});
// Create MCP server instance
const server = new Server(
{
name: 'singapore-transport-mcp',
version: PACKAGE_VERSION,
},
{
capabilities: {
tools: {},
},
}
);
// Initialize Singapore Transport server with tools
const transportServer = new SingaporeTransportServer(config);
await transportServer.setupTools(server);
// Perform health check
const healthStatus = await transportServer.healthCheck();
logger.info('Health check completed', healthStatus);
// Create stdio transport and connect
const transport = new StdioServerTransport();
await server.connect(transport);
logger.info('Singapore Transport MCP Server started successfully');
// Keep the process alive
process.stdin.resume();
} catch (error) {
logger.error('Failed to start Singapore Transport MCP Server', error);
process.exit(1);
}
}
// Handle graceful shutdown
function setupGracefulShutdown(): void {
const signals = ['SIGINT', 'SIGTERM', 'SIGQUIT'];
signals.forEach((signal) => {
process.on(signal, () => {
logger.info(`Received ${signal}, shutting down gracefully`);
process.exit(0);
});
});
process.on('uncaughtException', (error) => {
logger.error('Uncaught exception', error);
process.exit(1);
});
process.on('unhandledRejection', (reason, promise) => {
logger.error('Unhandled rejection', { reason, promise });
process.exit(1);
});
}
// CLI argument handling
function handleCliArgs(): void {
const args = process.argv.slice(2);
if (args.includes('--version') || args.includes('-v')) {
console.log(`Singapore Transport MCP v${PACKAGE_VERSION}`);
process.exit(0);
}
if (args.includes('--help') || args.includes('-h')) {
console.log(`
Singapore Transport MCP Server v${PACKAGE_VERSION}
A Model Context Protocol server for Singapore's transport system.
Usage:
singapore-transport-mcp [options]
npx @siva-sub/mcp-public-transport [options]
Options:
-h, --help Show this help message
-v, --version Show version number
Environment Variables:
LTA_ACCOUNT_KEY LTA DataMall API key (required)
ONEMAP_TOKEN OneMap API token (optional)
CACHE_DURATION Cache duration in seconds (default: 300)
LOG_LEVEL Logging level (default: info)
MAX_WALK_DISTANCE Max walking distance in meters (default: 1000)
Examples:
# Start the server
singapore-transport-mcp
# Use with Claude Desktop (add to claude_desktop_config.json):
{
"mcpServers": {
"singapore-transport": {
"command": "npx",
"args": ["-y", "@siva-sub/mcp-public-transport"],
"env": {
"LTA_ACCOUNT_KEY": "your_api_key_here"
}
}
}
}
For more information: https://github.com/siva-sub/MCP-Public-Transport
`);
process.exit(0);
}
}
// Main execution - check if this file is being run directly
function isMainModule(): boolean {
// For CommonJS
try {
return require.main === module;
} catch {
// For ES modules - fallback
return true; // Assume main module for ES builds
}
}
if (isMainModule()) {
handleCliArgs();
setupGracefulShutdown();
main().catch((error) => {
logger.error('Fatal error during startup', error);
process.exit(1);
});
}
export { SingaporeTransportServer };
