const { execSync } = require('child_process');
const path = require('path');

// Cleanup function to kill any process using specified ports
const cleanupPorts = () => {
  const ports = [4031, 4032]; // Backend and dev frontend ports
  
  ports.forEach(port => {
    try {
      // Find process using the port and kill it
      const output = execSync(`lsof -ti :${port}`, { encoding: 'utf-8' }).trim();
      if (output) {
        const pids = output.split('\n').filter(Boolean);
        pids.forEach(pid => {
          try {
            process.kill(parseInt(pid), 9);
            console.log(`[Cleanup] Killed process ${pid} on port ${port}`);
          } catch (err) {
            // Process already dead or permission issue
          }
        });
      }
    } catch (err) {
      // Port not in use or lsof not available
    }
  });
  
  // Give system time to release ports
  const start = Date.now();
  while (Date.now() - start < 1000) {
    // Sleep for 1 second
  }
};

module.exports = {
  apps: [
    {
      name: 'tilbudgivern-unified',
      script: path.join(__dirname, 'backend', 'unified-server.js'),
      cwd: path.join(__dirname, 'backend'),
      watch: false,
      max_memory_restart: '500M',
      env: {
        NODE_ENV: 'production',
        PORT: 4032
      },
      exec_mode: 'fork',
      error_file: '.pm2/logs/tilbudgivern-unified-error.log',
      out_file: '.pm2/logs/tilbudgivern-unified-out.log',
      merge_logs: false,
      autorestart: true,
      max_restarts: 10,
      min_uptime: '10s',
      kill_timeout: 5000,  // 5 second grace period before SIGKILL
      listen_timeout: 3000, // 3 second timeout for listen to succeed
      shutdown_with_message: true,
      instance_var: 'INSTANCE_ID'
    }
  ]
};