spex-mcp/src/index.js

MCP server for Figma SpeX plugin and Cursor AI integration

#!/usr/bin/env node

/**
 * SpeX MCP Server Router
 * Routes to either local or remote implementation based on arguments
 */

import { pathToFileURL } from 'url';
import { join } from 'path';
import { fileURLToPath } from 'url';
import { dirname } from 'path';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

function parseMode() {
    const args = process.argv.slice(2);
    
    // Check for explicit mode selection
    if (args.includes('--mode')) {
        const modeIndex = args.indexOf('--mode');
        if (modeIndex + 1 < args.length) {
            const mode = args[modeIndex + 1];
            if (['local', 'remote'].includes(mode)) {
                return mode;
            }
        }
    }
    
    // Auto-detect mode based on arguments
    const hasClientType = args.includes('--client-type');
    const hasServerUrl = args.includes('--server-url');
    const hasSessionId = args.includes('--session-id');
    
    // If any remote-specific arguments are present, use remote mode
    if (hasClientType || hasServerUrl || hasSessionId) {
        console.error('🌐 Auto-detected remote mode based on arguments');
        return 'remote';
    }
    
    // Default to remote mode (for cloud deployment)
    console.error('🌐 Using default remote mode');
    return 'remote';
}

async function main() {
    try {
        const mode = parseMode();
        console.error(`🚀 Starting SpeX MCP Server in ${mode} mode`);
        
        // Route to appropriate implementation
        const modulePath = join(__dirname, mode, 'index.js');
        const moduleUrl = pathToFileURL(modulePath);
        
        // Import and run the selected mode
        await import(moduleUrl);
        
    } catch (error) {
        console.error(`❌ Error starting SpeX MCP Server: ${error.message}`);
        
        if (error.code === 'ERR_MODULE_NOT_FOUND') {
            console.error('');
            console.error('Available modes:');
            console.error('  --mode local   # Local development mode');
            console.error('  --mode remote  # Remote/cloud mode (default)');
            console.error('');
            console.error('Examples:');
            console.error('  node src/index.js --mode local --port 8080 --force');
            console.error('  node src/index.js --mode remote --client-type mcp-client --session-id abc123');
            console.error('  node src/index.js --session-id abc123  # Auto-detects remote mode');
        }
        
        process.exit(1);
    }
}

main().catch((error) => {
    console.error(`❌ Unexpected error: ${error.message}`);
    process.exit(1);
});