package com.nova.sankuai.infra.utils;

import org.springframework.stereotype.Component;

import javax.validation.ConstraintViolation;
import javax.validation.Validator;
import java.util.Set;
import java.util.stream.Collectors;

@Component
public class Jsr303Validator {

    private final Validator validator;

    public Jsr303Validator(Validator validator) {
        this.validator = validator;
    }

    public <T> Set<ConstraintViolation<T>> getConstraintViolation(T pojo) {
        return validator.validate(pojo);
    }

    public <T> String getValidationMsg(T pojo) {
        Set<ConstraintViolation<T>> set = getConstraintViolation(pojo);
        if (set.size() == 0) {
            return null;
        }
        return set.stream()
                .map(it -> String.format("%s: %s", it.getPropertyPath(), it.getMessage()))
                .collect(Collectors.joining(", "));
    }

    public <T> boolean isLegal(T pojo) {
        return getConstraintViolation(pojo).size() == 0;
    }
}