/************************************************************************  
 * ClassName   :  ElementIdConverter     
 * Description :       
 * Author      :  Einsam    
 * CreateTime  :  2019/4/1 17:40:38  
************************************************************************
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************************************************************************
 * Copyright @ u-BIM Dev. 2018 . All rights reserved.  
************************************************************************/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.DB;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace GraphicsStudy.Json
{
    public class ElementIdConverter : Newtonsoft.Json.JsonConverter
    {
        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            if (value == null)
            {
                writer.WriteNull();
            }
            else
            {
                JObject jObject = new JObject();
                jObject.Add("ID", (value as ElementId).IntegerValue);
                writer.WriteValue(jObject.ToString());
            }
        }

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            var jObject = JObject.Parse(reader.Value as string);

            int id = jObject.Value<int>("ID");

            return new ElementId(id);
        }

        public override bool CanConvert(Type objectType)
        {
            if (objectType == typeof(ElementId))
            {
                return true;
            }

            return false;
        }
    }
}