using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CurrencyAlert
{
    public static class EnumHelper
    {
        /// <summary>
        /// Gets an attribute on an enum field value
        /// </summary>
        /// <typeparam name="T">The type of the attribute you want to retrieve</typeparam>
        /// <param name="enumVal">The enum value</param>
        /// <returns>The attribute of type T that exists on the enum value</returns>
        /// <example><![CDATA[string desc = myEnumVariable.GetAttributeOfType<DescriptionAttribute>().Description;]]></example>
        public static T GetAttributeOfType<T>(this System.Enum enumVal) where T : System.Attribute
        {
            var type = enumVal.GetType();
            var memInfo = type.GetMember(enumVal.ToString());
            var attributes = memInfo[0].GetCustomAttributes(typeof(T), false);
            return (attributes.Length > 0) ? (T)attributes[0] : null;
        }

        public static void Each<T>(Action<T> action)
        {
            foreach (var item in System.Enum.GetValues(typeof(T)))
                action((T)item);
        }
    }
}