using Newtonsoft.Json;
using System.Configuration;
using System.Web.Configuration;
using System.Web.Script.Serialization;

namespace CRM.Core.Common.WebHelper
{
    public class JsonHelper
    {
        public static T JsonDivertToObj<T>(string json)
        {
            JavaScriptSerializer script = new JavaScriptSerializer();
            T dic = script.Deserialize<T>(json);
            return dic;
        }

        public static string ObjDivertToJson(object obj)
        {
            ScriptingJsonSerializationSection section = ConfigurationManager.GetSection("system.web.extensions/scripting/webServices/jsonSerialization") as ScriptingJsonSerializationSection;

            JavaScriptSerializer script = new JavaScriptSerializer();
            script.MaxJsonLength = section != null ? section.MaxJsonLength : int.MaxValue;
            string json = script.Serialize(obj);
            return json;
        }

        public static string NewtonsoftToJson(object obj)
        {
            var json = Newtonsoft.Json.JsonConvert.SerializeObject(obj);
            return json;
        }

        /// 将Json字符串转换为对象
        /// </summary>
        /// <param name="json">Json字符串</param>
        public static T FromJson<T>(string json)
        {
            if (string.IsNullOrWhiteSpace(json))
                return default(T);
            return JsonConvert.DeserializeObject<T>(json);
        }

        /// <summary>
        /// 将对象转换为Json字符串
        /// </summary>
        /// <param name="target">目标对象</param>
        /// <param name="isConvertToSingleQuotes">是否将双引号转成单引号</param>
        public static string ToJson(object target, bool isConvertToSingleQuotes = false)
        {
            if (target == null)
                return string.Empty;
            var result = JsonConvert.SerializeObject(target);
            if (isConvertToSingleQuotes)
                result = result.Replace("\"", "'");
            return result;
        }

    }
}