using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;

namespace JwKdsV.Core.Utils
{
    public static class ObjectUtils
    {
        //要复制的实例必须可序列化，包括实例引用的其它实例都必须在类定义时加[Serializable]特性。  
        public static T Copy<T>(T source)
        {
            if (!typeof(T).IsSerializable)
            {
                throw new ArgumentException("The type must be serializable." , "source");
            }

            // Don't serialize a null object, simply return the default for that object
            if (Object.ReferenceEquals(source , null))
            {
                return default(T);
            }

            IFormatter formatter = new BinaryFormatter();
            Stream stream = new MemoryStream();
            using (stream)
            {
                formatter.Serialize(stream , source);
                stream.Seek(0 , SeekOrigin.Begin);
                return (T)formatter.Deserialize(stream);
            }
        }

        public static void CopyTo(this object S , object T)
        {
            foreach (var pS in S.GetType().GetProperties())
            {
                foreach (var pT in T.GetType().GetProperties())
                {
                    if (pT.Name != pS.Name) continue;
                    (pT.GetSetMethod()).Invoke(T , new object[]{ pS.GetGetMethod().Invoke( S, null ) });
                }
            };
        }
        

        public static T CloneJson<T>(this T source)
        {
            // Don't serialize a null object, simply return the default for that object
            if (Object.ReferenceEquals(source , null))
            {
                return default(T);
            }

            // initialize inner objects individually
            // for example in default constructor some list property initialized with some values,
            // but in 'source' these items are cleaned -
            // without ObjectCreationHandling.Replace default constructor values will be added to result
            var deserializeSettings = new JsonSerializerSettings { ObjectCreationHandling = ObjectCreationHandling.Replace };

            return JsonConvert.DeserializeObject<T>(JsonConvert.SerializeObject(source) , deserializeSettings);
        }
    }
}