using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using zero.Core.Attributes;
using zero.Core.Utils;

namespace zero.Core.Extensions
{
  public static class ObjectExtensions
  {
    public static bool Is<T>(this Type type)
    {
      return type.IsAssignableFrom(typeof(T));
    }


    public static bool Is<T>(this object obj)
    {
      return obj.GetType().IsAssignableFrom(typeof(T));
    }


    public static T Clone<T>(this T obj)
    {
      Type type = obj.GetType();
      return (T)JsonConvert.DeserializeObject(JsonConvert.SerializeObject(obj, new RefJsonConverter()), type, new RefJsonConverter());
    }

    public static T CloneLax<T>(this object obj)
    {
      return JsonConvert.DeserializeObject<T>(JsonConvert.SerializeObject(obj, new RefJsonConverter()), new RefJsonConverter());
    }

    public static T AutoSetIds<T>(this T obj)
    {
      // find all Raven Ids
      List<ObjectTraverser.Result<GenerateIdAttribute>> ravenIds = ObjectTraverser.FindAttribute<GenerateIdAttribute>(obj);

      // set unset Raven Ids
      foreach (ObjectTraverser.Result<GenerateIdAttribute> item in ravenIds)
      {
        string id = item.Property.GetValue(item.Parent, null) as string;
        if (String.IsNullOrWhiteSpace(id))
        {
          item.Property.SetValue(item.Parent, item.Item.Length.HasValue ? IdGenerator.Create(item.Item.Length.Value) : IdGenerator.Create());
        }
      }

      return obj;
    }
  }
}