using Gestor.Model.Attributes;
using System;
using System.ComponentModel;
using System.Reflection;
using System.Runtime.CompilerServices;

namespace Gestor.Common.Helpers
{
	public static class EnumHelper
	{
		public static T2 GetAttribute<T, T2>(this T enumValue)
		where T2 : class
		{
			T2 customAttribute;
			string name = Enum.GetName(enumValue.GetType(), enumValue);
			try
			{
				customAttribute = (T2)(Attribute.GetCustomAttribute(enumValue.GetType().GetField(name), typeof(T2)) as T2);
			}
			catch (Exception exception)
			{
				customAttribute = default(T2);
			}
			return customAttribute;
		}

		public static bool? GetDefault<T>(this T enumValue)
		{
			object customAttribute;
			string name = Enum.GetName(enumValue.GetType(), enumValue);
			FieldInfo field = enumValue.GetType().GetField(name);
			if (field == null)
			{
				customAttribute = null;
			}
			else
			{
				customAttribute = Attribute.GetCustomAttribute(field, typeof(DefaultAttribute)) as DefaultAttribute;
			}
			if (customAttribute != null)
			{
				return new bool?(((DefaultAttribute)customAttribute).DefaultProperty);
			}
			return null;
		}

		public static string GetDescription<T>(this T enumValue)
		{
			object customAttribute;
			string name = Enum.GetName(enumValue.GetType(), enumValue);
			if (name == null)
			{
				return null;
			}
			FieldInfo field = enumValue.GetType().GetField(name);
			if (field == null)
			{
				customAttribute = null;
			}
			else
			{
				customAttribute = Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) as DescriptionAttribute;
			}
			if (customAttribute != null)
			{
				return ((DescriptionAttribute)customAttribute).Description;
			}
			return null;
		}

		public static bool GetHidden<T>(this T enumValue)
		{
			object customAttribute;
			string name = Enum.GetName(enumValue.GetType(), enumValue);
			FieldInfo field = enumValue.GetType().GetField(name);
			if (field == null)
			{
				customAttribute = null;
			}
			else
			{
				customAttribute = Attribute.GetCustomAttribute(field, typeof(HiddenAttribute)) as HiddenAttribute;
			}
			return customAttribute != null;
		}

		public static string GetOldValue<T>(this T enumValue)
		{
			OldValueAttribute attribute = enumValue.GetAttribute<T, OldValueAttribute>();
			if (attribute != null)
			{
				return attribute.OldValue;
			}
			return null;
		}

		public static string GetOldValue2<T>(this T enumValue)
		{
			OldValue2Attribute attribute = enumValue.GetAttribute<T, OldValue2Attribute>();
			if (attribute != null)
			{
				return attribute.OldValue2;
			}
			return null;
		}

		public static int? GetOrder<T>(this T enumValue)
		{
			object customAttribute;
			string name = Enum.GetName(enumValue.GetType(), enumValue);
			FieldInfo field = enumValue.GetType().GetField(name);
			if (field == null)
			{
				customAttribute = null;
			}
			else
			{
				customAttribute = Attribute.GetCustomAttribute(field, typeof(OrderAttribute)) as OrderAttribute;
			}
			if (customAttribute != null)
			{
				return new int?(((OrderAttribute)customAttribute).OrderProperty);
			}
			return null;
		}

		public static T ToEnumByOldValue<T>(this string oldValue)
		{
			Type type = typeof(T);
			Type type1 = typeof(OldValueAttribute);
			FieldInfo[] fields = type.GetFields();
			for (int i = 0; i < (int)fields.Length; i++)
			{
				FieldInfo fieldInfo = fields[i];
				OldValueAttribute customAttribute = Attribute.GetCustomAttribute(fieldInfo, type1) as OldValueAttribute;
				if (customAttribute != null && customAttribute.OldValue == oldValue)
				{
					return (T)fieldInfo.GetValue(null);
				}
			}
			return default(T);
		}

		public static T ToEnumByOldValue2<T>(this string oldValue)
		{
			Type type = typeof(T);
			Type type1 = typeof(OldValue2Attribute);
			FieldInfo[] fields = type.GetFields();
			for (int i = 0; i < (int)fields.Length; i++)
			{
				FieldInfo fieldInfo = fields[i];
				OldValue2Attribute customAttribute = Attribute.GetCustomAttribute(fieldInfo, type1) as OldValue2Attribute;
				if (customAttribute != null && customAttribute.OldValue2 == oldValue)
				{
					return (T)fieldInfo.GetValue(null);
				}
			}
			return default(T);
		}

		public static string Value<T>(this T enumValue)
		{
			return Convert.ToInt32(enumValue).ToString();
		}
	}
}