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;
    }
}