// services/copyparty.js
import { spawn } from 'node:child_process';

let processHandle = null;

export function startCopyparty(config) {
  const cp = config.copyparty;
  if (!cp?.enabled || processHandle) return;

  const mountPoint = config.system.mountPoint;

  // volflag :c,hist=/tmp keeps sqlite write hits off the flash drive and sd card
  const volSpec = `${mountPoint}:${cp.volumeName}:${cp.permissions}:c,hist=/tmp/copyparty`;

  const args = [
    cp.binaryPath,
    '-p', String(cp.port),
    '-a', `${cp.user}:${cp.password}`,
    '-v', volSpec,
    ...(cp.extraArgs || [])
  ];

  console.log(`[COPYPARTY] Starting server on port ${cp.port}...`);
  processHandle = spawn('python3', args, {
    stdio: 'ignore', // swap to 'inherit' if debugging startup flags
    detached: false
  });

  processHandle.on('error', (err) => {
    console.error('[COPYPARTY] Failed to spawn:', err.message);
    processHandle = null;
  });

  processHandle.on('exit', (code) => {
    console.log(`[COPYPARTY] Process exited (code ${code})`);
    processHandle = null;
  });
}

export function stopCopyparty() {
  if (!processHandle) return;
  console.log('[COPYPARTY] Stopping server...');
  processHandle.kill('SIGTERM');
  processHandle = null;
}