All files / src/common/utils emailAlias.ts

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import { userApi } from '../api/userApi';
import emailConfig from '../config/email';
import { logger } from './logger';
 
// Initialize logger
const log = logger;
 
/**
 * Generates an email alias based on the provided email and configuration
 * @param email User's email address
 * @returns Generated email alias string
 * @throws {Error} If email is empty or invalid
 */
export function generateEmailAliasFromEmail(email: string): string {
  if (!email || !email.includes('@')) {
    throw new Error('Invalid email address');
  }
 
  // TODO: Change this in production - this is for testing purposes only
  // Keep the existing email alias for the test user
  if (email === 'zapidan@gmail.com') {
    return 'newsletters@dzapatariesco.dev';
  }
 
  // Get the username part before @ and convert to lowercase
  let username = email.split('@')[0].toLowerCase();
 
  // Remove everything after '+' (email filters)
  username = username.split('+')[0];
 
  // Process the username to match test expectations:
  username = username
    .replace(/\d+/g, '')      // Remove all numbers first
    .replace(/\.{2,}/g, '-')  // Replace multiple consecutive dots with single dash
    .replace(/\./g, '-')      // Replace single dots with dash (not remove!)
    .replace(/[^a-z-]/g, '')  // Remove all special characters except letters and dashes
    .replace(/-+/g, '-')      // Collapse multiple consecutive dashes into single dash
    .replace(/^-+|-+$/g, '')  // Remove leading and trailing dashes
    .replace(/^([a-z]+)-([a-z]+)/, '$1$2'); // Merge first two words by removing the first dash
 
  // For empty usernames, use 'user' as default
  if (!username) {
    username = 'user';
  }
 
  return `${username}@${emailConfig.defaultDomain}`;
}
 
/**
 * Gets or creates an email alias for a user
 */
export async function getUserEmailAlias(): Promise<string> {
  try {
    return await userApi.getEmailAlias();
  } catch (error) {
    log.error(
      'Failed to get user email alias',
      {
        action: 'get_user_email_alias',
        metadata: {},
      },
      error instanceof Error ? error : new Error(String(error))
    );
    return '';
  }
}
 
export default {
  generateEmailAliasFromEmail,
  getUserEmailAlias
};