import { ClamAVManager } from '../../ts/classes.clamav.manager.js';
import { execAsync } from '../../ts/plugins.js';

let clamManager: ClamAVManager | null = null;
let isCleaningUp = false;

export async function getManager(): Promise<ClamAVManager> {
  if (!clamManager) {
    throw new Error('ClamAV manager not initialized');
  }
  return clamManager;
}

export async function setupClamAV(): Promise<ClamAVManager> {
  console.log('[Helper] Setting up ClamAV...');
  
  // First cleanup any existing containers
  await forceCleanupContainer();
  
  if (!clamManager) {
    console.log('[Helper] Creating new ClamAV manager instance');
    clamManager = new ClamAVManager();
    await clamManager.startContainer();
    console.log('[Helper] ClamAV manager initialized');
  } else {
    console.log('[Helper] Using existing ClamAV manager instance');
  }
  
  return clamManager;
}

export async function cleanupClamAV(): Promise<void> {
  if (isCleaningUp) {
    console.log('[Helper] Cleanup already in progress, skipping');
    return;
  }
  
  isCleaningUp = true;
  console.log('[Helper] Cleaning up ClamAV...');
  
  try {
    if (clamManager) {
      await clamManager.stopContainer();
      console.log('[Helper] ClamAV container stopped');
    }
    await forceCleanupContainer();
  } catch (error) {
    console.error('[Helper] Error during cleanup:', error);
    throw error;
  } finally {
    clamManager = null;
    isCleaningUp = false;
  }
}

async function forceCleanupContainer(): Promise<void> {
  try {
    // Stop any existing container
    await execAsync('docker stop clamav-daemon').catch(() => {});
    // Remove any existing container
    await execAsync('docker rm -f clamav-daemon').catch(() => {});
    console.log('[Helper] Forced cleanup of existing containers complete');
  } catch (error) {
    // Ignore errors as the container might not exist
  }
}

// Handle interrupts
process.on('SIGINT', async () => {
  console.log('\n[Helper] Received SIGINT. Cleaning up...');
  try {
    await cleanupClamAV();
    process.exit(0);
  } catch (err) {
    console.error('[Helper] Error during cleanup:', err);
    process.exit(1);
  }
});

// Ensure cleanup on process exit
process.on('exit', () => {
  if (clamManager && !isCleaningUp) {
    console.log('[Helper] Process exit detected, attempting cleanup');
    // We can't use async functions in exit handler, so we do our best
    try {
      execAsync('docker stop clamav-daemon').catch(() => {});
      execAsync('docker rm -f clamav-daemon').catch(() => {});
    } catch {}
  }
});