src/main/java/com/pt/service/InvitedCodeService.java

package com.pt.service;

import com.pt.repository.InvitedCoedRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class InvitedCodeService {

    @Autowired
    private InvitedCoedRepository invitedCodeRepository;

    public boolean isCodeValid(String code) {
        return invitedCodeRepository.findByCode(code) != null;
    }
}