package com.cowr.common.utils;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

public class JsonUtil {
    public static JSONObject key2Lower(JSONObject obj) {
        return key2Lower(obj, false);
    }

    /**
     * json 对象 key 转小写
     *
     * @param obj
     * @param deep
     * @return
     */
    public static JSONObject key2Lower(JSONObject obj, boolean deep) {
        if (obj == null || obj.isEmpty()) {
            return obj;
        }

        JSONObject out = new JSONObject();

        for (String key : obj.keySet()) {
            Object tmp = obj.get(key);
            if (tmp instanceof JSONObject && deep) {
                tmp = key2Lower((JSONObject) tmp, deep);
            } else if (tmp instanceof JSONArray && deep) {
                JSONArray arr = (JSONArray) tmp;
                for (int i = 0; i < arr.size(); i++) {
                    arr.set(i, key2Lower(arr.getJSONObject(i), deep));
                }
            }
            out.put(key.toLowerCase(), tmp);
        }

        return out;
    }
}