@codemafia0000/d0/src/lib/daemon/background-daemon.js

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#!/usr/bin/env node

const fs = require('fs');
const path = require('path');
const MessageDaemon = require('./message-daemon');

// Get project root from command line argument
const projectRoot = process.argv[2] || process.cwd();

// Change working directory to project root
process.chdir(projectRoot);

// Now import constants with correct project root
const CONSTANTS = require('../constants');

class BackgroundDaemon {
  constructor() {
    this.messageDaemon = new MessageDaemon();
    this.isRunning = false;
  }

  start() {
    console.log(`🚀 Starting background daemon for project: ${projectRoot}`);
    
    // Write PID file
    try {
      const pidFile = CONSTANTS.getTmpPath('daemon.pid');
      if (!fs.existsSync(CONSTANTS.TMP_DIR)) {
        fs.mkdirSync(CONSTANTS.TMP_DIR, { recursive: true });
      }
      fs.writeFileSync(pidFile, process.pid.toString());
      console.log(`📝 PID ${process.pid} written to ${pidFile}`);
    } catch (error) {
      console.error('Failed to write PID file:', error.message);
    }

    // Start message daemon
    this.messageDaemon.start();
    this.isRunning = true;
    
    console.log('✅ Background daemon started successfully');
    console.log('🤖 Message auto-processing is now active');
    
    // Keep the process alive
    process.on('SIGINT', () => this.shutdown());
    process.on('SIGTERM', () => this.shutdown());
    process.on('exit', () => this.cleanup());
    
    // Periodic health check
    setInterval(() => {
      this.healthCheck();
    }, 30000); // Every 30 seconds
  }

  healthCheck() {
    // Check if sessions file still exists
    if (!fs.existsSync(CONSTANTS.SESSIONS_FILE)) {
      console.log('⚠️ Sessions file not found, shutting down daemon');
      this.shutdown();
      return;
    }

    // Log status periodically (optional)
    const now = new Date().toISOString();
    console.log(`💓 Daemon health check at ${now} - Status: Running`);
  }

  shutdown() {
    console.log('🛑 Shutting down background daemon...');
    
    if (this.messageDaemon) {
      this.messageDaemon.stop();
    }
    
    this.cleanup();
    process.exit(0);
  }

  cleanup() {
    try {
      // Remove PID file
      const pidFile = CONSTANTS.getTmpPath('daemon.pid');
      if (fs.existsSync(pidFile)) {
        fs.unlinkSync(pidFile);
        console.log('🧹 Cleaned up PID file');
      }
    } catch (error) {
      console.error('Error during cleanup:', error.message);
    }
  }
}

// Start the daemon if this file is run directly
if (require.main === module) {
  const daemon = new BackgroundDaemon();
  daemon.start();
}

module.exports = BackgroundDaemon;