browser-x-mcp/src/server/daemon.js

AI-Powered Browser Automation with Advanced Form Testing - A Model Context Provider (MCP) server that enables intelligent browser automation with form testing, element extraction, and comprehensive logging

#!/usr/bin/env node

/**
 * Browser[X]MCP Daemon Server
 * Long-running MCP server with persistent browser instance
 */

import BrowserXMCPServer from './index.js';

class BrowserXMCPDaemon {
    constructor() {
        this.server = new BrowserXMCPServer();
        this.isRunning = false;
    }

    async start() {
        if (this.isRunning) {
            console.error('🔄 Daemon already running');
            return;
        }

        try {
            console.error('🚀 Starting Browser[X]MCP Daemon...');
            
            // Start the MCP server
            await this.server.run();
            this.isRunning = true;
            
            console.error('✅ Daemon started successfully!');
            console.error('🌐 Browser instance will persist between MCP calls');
            
            // Keep process alive
            this.setupSignalHandlers();
            
        } catch (error) {
            console.error('❌ Failed to start daemon:', error.message);
            process.exit(1);
        }
    }

    setupSignalHandlers() {
        // Graceful shutdown on SIGINT (Ctrl+C)
        process.on('SIGINT', async () => {
            console.error('\n🛑 Received SIGINT, shutting down gracefully...');
            await this.shutdown();
        });

        // Graceful shutdown on SIGTERM
        process.on('SIGTERM', async () => {
            console.error('\n🛑 Received SIGTERM, shutting down gracefully...');
            await this.shutdown();
        });

        // Handle uncaught exceptions
        process.on('uncaughtException', (error) => {
            console.error('❌ Uncaught Exception:', error);
            this.shutdown().then(() => process.exit(1));
        });

        // Handle unhandled promise rejections
        process.on('unhandledRejection', (reason, promise) => {
            console.error('❌ Unhandled Rejection at:', promise, 'reason:', reason);
        });
    }

    async shutdown() {
        if (!this.isRunning) return;

        try {
            console.error('🔄 Shutting down Browser[X]MCP Daemon...');
            
            // Close browser if running
            if (this.server.browserInstance?.browser) {
                await this.server.browserInstance.browser.close();
                console.error('🌐 Browser closed');
            }
            
            this.isRunning = false;
            console.error('✅ Daemon shut down successfully');
            
        } catch (error) {
            console.error('❌ Error during shutdown:', error.message);
        } finally {
            process.exit(0);
        }
    }
}

// Start daemon if run directly
if (import.meta.url === `file://${process.argv[1]}`) {
    const daemon = new BrowserXMCPDaemon();
    daemon.start().catch(console.error);
}

export default BrowserXMCPDaemon;