package com.pollex.pam.service;

import com.pollex.pam.domain.Consultant;
import com.pollex.pam.service.dto.FastQueryConsultantParam;
import org.apache.commons.lang3.StringUtils;
import org.springframework.data.jpa.domain.Specification;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import java.util.HashSet;
import java.util.Set;

public class ConsultantQuerySpec {
    private ConsultantQuerySpec() {
    }

    public static Specification<Consultant> getFastQuerySpec(FastQueryConsultantParam param) {
        return new Specification<Consultant>() {
            @SuppressWarnings("FieldNameHidesFieldInSuperclass")
            private static final long serialVersionUID = 6644524130903161741L;

            @Override
            public Predicate toPredicate(Root<Consultant> root, CriteriaQuery<?> query, CriteriaBuilder criteriaBuilder) {
                Set<Predicate> set = new HashSet<>();

                if(!StringUtils.isEmpty(param.getCommunicationStyle())) {
                    set.add(criteriaBuilder.like(root.get("concept"), "%" + param.getCommunicationStyle()));
                }

                set.add(criteriaBuilder.equal(root.get("gender"), param.getGender()));
                set.add(criteriaBuilder.between(root.get("avgScore"), param.getAvgScore().intValue() - 1, param.getAvgScore().intValue() + 1));

                Predicate[] predicates = new Predicate[set.size()];
                predicates = set.toArray(predicates);
                return criteriaBuilder.or(predicates);
            }
        };
    }

//    public static Specification<Consultant> getStrictQuerySpec(StrictQueryConsultantParam param) {
//        return new Specification<Consultant>() {
//            @Override
//            public Predicate toPredicate(Root<Consultant> root, CriteriaQuery<?> query, CriteriaBuilder criteriaBuilder) {
//                Set<Predicate> set = new HashSet<>();
//
//                set.add(criteriaBuilder.equal(root.get("gender"), param.getGender()));
//                set.add(criteriaBuilder.between(root.get("avgScore"), param.getAvgScore().intValue() - 1, param.getAvgScore().intValue() + 1));
//                set.add(criteriaBuilder.like(root.get("serve_area"),"%"+param.getArea()+"%"));
//                set.add(root.get("").in(param.getRequirements()))
//
//                Predicate[] predicates = new Predicate[set.size()];
//                predicates = set.toArray(predicates);
//                return criteriaBuilder.or(predicates);
//            }
//        };
//    }
}