package com.xly.erp.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * 让 Jackson 通过字段名（而非 getter/setter 推断）确定 JSON 属性名。
 *
 * <p>项目沿用 docs/03 的匈牙利前缀命名（如 {@code iIncrement} / {@code sUserName}），
 * Lombok 生成的 getter（{@code getIIncrement}）经 JavaBeans Introspector 解析为
 * {@code IIncrement}（首两字符全大写时保留），导致 JSON 输出 {@code "IIncrement"}
 * 而非期望的 {@code "iIncrement"}。改为字段访问后，Jackson 直接用字段名作 JSON key。</p>
 */
@Configuration
public class JacksonConfig {

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer fieldOnlyVisibility() {
        return builder -> builder
                .visibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY)
                .visibility(PropertyAccessor.GETTER, JsonAutoDetect.Visibility.NONE)
                .visibility(PropertyAccessor.IS_GETTER, JsonAutoDetect.Visibility.NONE)
                .visibility(PropertyAccessor.SETTER, JsonAutoDetect.Visibility.NONE);
    }
}