package com.sonymusic.dx.dxadvsearchservice.service;

import java.util.List;

import org.springframework.stereotype.Service;

import com.sonymusic.dx.dxadvsearchservice.dto.ContentDTO;
import com.sonymusic.dx.persistence.gras.SoundCode;

import jakarta.persistence.EntityManager;
import jakarta.persistence.PersistenceContext;
import jakarta.persistence.TypedQuery;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.CriteriaQuery;
import jakarta.persistence.criteria.Root;

@Service
public class ContentService {
    @PersistenceContext(name = "dx-gras-persistence")
    private EntityManager em;

    public List<ContentDTO> getListOfContent() {
        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaQuery<ContentDTO> cq=cb.createQuery(ContentDTO.class);
        Root<SoundCode> root =cq.from(SoundCode.class);
        cq.select(cb.construct(
                ContentDTO.class,
                root.get("soundCodeKey"),
                root.get("soundCodeName")
        ));
        cq.orderBy(cb.asc(root.get("soundCodeName")));
        cq.distinct(true);
        TypedQuery<ContentDTO> query = em.createQuery(cq);

        return query.getResultList();
    }
}