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package com.hecloud.runtime.common.utils;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.hecloud.runtime.common.model.GenericResult;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.HashMap;
import java.util.List;

/**
 * JSON工具类
 *
 * @author LoveinBJ
 */
public class JSONTools {

    private static Logger logger = LoggerFactory.getLogger(JSONTools.class);

    public static boolean isMap(String jsonString) {
        try {
            JSONObject.parseObject(jsonString, HashMap.class);
            return true;
        } catch (Exception e) {
            logger.error("Param format exception:{}", e.getMessage());
            return false;
        }
    }

    public static GenericResult isJSON(String jsonString) {
        if (StringUtils.isEmpty(jsonString)) {
            return new GenericResult<>(false, "FORMAT ERROR!");
        }
        try {
            JSONObject jsonObject = JSONObject.parseObject(jsonString, JSONObject.class);
            return new GenericResult<>(true, "success", jsonObject);
        } catch (Exception e) {
            logger.error("Param format exception:{}", e.getMessage());
            return new GenericResult<>(false, "FORMAT ERROR!");
        }
    }

    public static GenericResult> isJSONArray(String jsonString) {
        if (StringUtils.isEmpty(jsonString)) {
            return new GenericResult<>(false, "FORMAT ERROR!");
        }
        try {
            List list = JSONObject.parseArray(jsonString, JSONObject.class);
            return new GenericResult<>(true, "success", list);
        } catch (Exception e) {
            logger.error("Param format exception:{}", e.getMessage());
            return new GenericResult<>(false, "FORMAT ERROR!");
        }
    }

    /**
     * 获取json字符串对应的JSONObject对象
     *
     * @param jsonString json字符串
     * @return 如果json字符串为空，或转换失败，返回null
     */
    public static JSONObject isJSONObj(String jsonString) {
        if (StringUtils.isNotEmpty(jsonString)) {
            try {
                return JSONObject.parseObject(jsonString, JSONObject.class);
            } catch (Exception e) {
                logger.error("Param format exception: {}", e.getMessage());
                return null;
            }
        } else {
            return null;
        }
    }

    /**
     * 功能：把Json数据格式字符串转换为JSonArray
     *
     * @param jsonString json字符串
     * @return json数组
     */
    public static JSONArray parseStr2JsonArray(String jsonString) {
        if (StringUtils.isNotEmpty(jsonString)) {
            try {
                return JSONArray.parseArray(jsonString);
            } catch (Exception e) {
                logger.error("Param format exception: {}", e.getMessage());
                return null;
            }
        } else {
            return null;
        }
    }
}