using Newtonsoft.Json;
using SuperSocket.ProtoBase;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Getf.Service.Transfer.Request.SDK.Entities
{
	public class TransInfo : IPackageInfo
	{
		public TransHead Head { get; set; }

		public TransBody Body { get; set; }

		public TransResult TransResultInfo { get; set; }

		[JsonIgnore]
		public byte[] Data { get; set; }

		public static TransInfo Parse(byte[] buffer)
		{
			var strlength = BitConverter.ToInt32(buffer, 2);
			var byteLength = BitConverter.ToInt32(buffer, 6);
			var json = Encoding.UTF8.GetString(buffer.Skip(10).Take(strlength).ToArray());
			if (json == String.Empty)
			{
				return null;
			}
			var r = JsonConvert.DeserializeObject<TransInfo>(json);
			r.Data = buffer.Skip(10 + strlength).Take(byteLength).ToArray();
			return r;
		}

		public byte[] ToByte()
		{
			List<byte> bufferHead = new List<byte>();
			bufferHead.AddRange(Encoding.UTF8.GetBytes("@@"));
			List<byte> bufferBody = new List<byte>();
			var json = JsonConvert.SerializeObject(this);
			bufferBody.AddRange(Encoding.UTF8.GetBytes(json));
			var strLength = bufferBody.Count;
			if (Data != null)
			{
				bufferBody.AddRange(Data);
			}
			bufferHead.AddRange(BitConverter.GetBytes(strLength));
			bufferHead.AddRange(BitConverter.GetBytes(Data == null ? 0 : Data.Length));
			bufferHead.AddRange(bufferBody);
			return bufferHead.ToArray();
		}
	}
}