public without sharing class ContactCreator {
    @AuraEnabled
    public static void createContact(String fname, String lname, String email) {
        System.debug('Creating contact with email: ' + email);

        // Check for duplicate email
        List<Contact> existingContacts = [SELECT Id FROM Contact WHERE Email = :email LIMIT 1];
        System.debug('Found ' + existingContacts.size() + ' contacts with the same email');

        if (!existingContacts.isEmpty()) {
            throw new AuraHandledException('A contact with this email already exists.');
        }

        // If no duplicate found, create new contact
        Contact newContact = new Contact();
        newContact.FirstName = fname;
        newContact.LastName = lname;
        newContact.Email = email;

        try {
            insert newContact;
            System.debug('Successfully created contact with email: ' + email);
        } catch (DmlException e) {
            System.debug('Error while creating contact: ' + e.getMessage());
            throw new AuraHandledException('An error occurred: ' + e.getMessage());
        }
    }
}