package com.yj.earth.common.util;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;

import java.util.HashMap;
import java.util.Map;

/**
 * Map与JSON互相转换工具类
 */
@Slf4j
public class JsonMapConverter {

    private static final ObjectMapper objectMapper = new ObjectMapper();

    /**
     * 将 Map 转换为 JSON 字符串
     */
    public static String mapToJson(Map<String, Object> map) {
        if (map == null || map.isEmpty()) {
            return "{}";
        }

        try {
            return objectMapper.writeValueAsString(map);
        } catch (JsonProcessingException e) {
            log.error("Map转JSON失败", e);
            return null;
        }
    }

    /**
     * 将 JSON 字符串转换为 Map
     */
    public static Map<String, Object> jsonToMap(String json) {
        if (json == null || json.trim().isEmpty()) {
            return new HashMap<>(0);
        }

        try {
            return objectMapper.readValue(json, new TypeReference<Map<String, Object>>() {});
        } catch (Exception e) {
            log.error("JSON转Map失败、JSON内容: {}", json, e);
            return new HashMap<>(0);
        }
    }
}