import { AwsService } from './services/aws-service';
import { AwsConnectionResult } from './types/client';
import { logger } from './utils/logger';

/**
 * Display troubleshooting suggestions for AWS connection failures
 */
function displayTroubleshootingSuggestions(): void {
  logger.info('\nTroubleshooting suggestions:');
  logger.info('1. Check that you have valid AWS credentials');
  logger.info('2. Ensure your credentials have permission to access CloudWatch Logs');
  logger.info('3. Verify your region is correct');
  logger.info('4. Try setting AWS_PROFILE if you use credential profiles');
  logger.info('5. Check your network connectivity to AWS');
}

/**
 * Handle successful connection result
 * @param result Successful connection result
 */
function handleSuccessResult(result: AwsConnectionResult): void {
  logger.info(result.message);
  if (result.logGroupName) {
    logger.info(`Found log group: ${result.logGroupName}`);
  }
}

/**
 * Handle failed connection result
 * @param result Failed connection result
 */
function handleFailureResult(result: AwsConnectionResult): void {
  logger.error(result.message);
  if (result.error) {
    logger.error('Error details:', result.error);
  }
  
  // Provide helpful troubleshooting guidance
  displayTroubleshootingSuggestions();
}

/**
 * Simple utility to test AWS CloudWatch Logs connectivity
 */
async function testAwsConnection(): Promise<void> {
  try {
    // Initialize AWS service
    const awsService = new AwsService();
    
    // Test connection
    const result = await awsService.testConnection();
    
    // Handle result based on success/failure
    if (result.success) {
      handleSuccessResult(result);
    } else {
      handleFailureResult(result);
    }
  } catch (error) {
    logger.error('Unexpected error during AWS connection test:', error);
  }
}

// Run the test
testAwsConnection().catch(err => logger.error('Unhandled error:', err));