BPASmartClient/DosingSystem/Model/MQTT/Messages/MsgPackExtensionMethod.cs

using BPA.Helper;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Linq;

namespace BPASmartClient.DosingSystem.Model.MQTT.Messages
{
    public static class MsgPackExtensionMethod
    {
        public static MsgPackage Deserialize(this string msg)
        {
            if (msg != null)
            {
                if (msg.Iskey("MessageId") && msg.Iskey("Message") && msg.Iskey("MessageLen"))
                {
                    var obj = msg.FromJSON<MsgPackage>();
                    if (obj != null)
                        return obj;
                }
                else
                {
                    var id = msg.ToLower().GetJsonObjValue("messageid");
                    if (int.TryParse(id, out int tempId))
                    {
                        if (MessageDefine.MSG.ContainsKey(tempId))
                        {
                            MsgPackage package = new MsgPackage();
                            package.MessageId = tempId;
                            if (int.TryParse(msg.ToLower().GetJsonObjValue("messagelen"), out int tempLen))
                                package.MessageLen = tempLen;
                            var res = msg.ToLower().GetJsonObjValue("message");
                            if (res != null)
                            {
                                package.Message = (IMessage)JsonConvert.DeserializeObject(res, MessageDefine.MSG[tempId]);
                            }
                            return package;
                        }
                    }
                }
            }
            return new MsgPackage();
        }

        public static string Serialize(this IMessage mes)
        {
            MsgPackage msg = new MsgPackage();
            var res = MessageDefine.MSG.FirstOrDefault(p => p.Value == mes.GetType());
            msg.MessageId = res.Key;
            msg.MessageLen = JsonConvert.SerializeObject(mes).Length;
            msg.Message = mes;
            return JsonConvert.SerializeObject(msg);
        }

        public static string GetJsonObjValue(this string input, string key)
        {
            try
            {
                JObject jo = (JObject)JsonConvert.DeserializeObject(input);
                if (jo != null && jo.ContainsKey(key))
                    return jo[key].ToString();
                else
                    return string.Empty;
            }
            catch (Exception EX)
            {
                MessageLog.GetInstance.ShowEx(EX.ToString());
                return string.Empty;
            }
        }

        public static bool Iskey(this string input, string key)
        {
            try
            {
                JObject jo = (JObject)JsonConvert.DeserializeObject(input);
                return jo != null && jo.ContainsKey(key);
            }
            catch (Exception EX)
            {
                MessageLog.GetInstance.ShowEx(EX.ToString());
                return false;
            }
        }
    }
}