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

namespace Bowin.Common.Utility
{
    public static class ExceptionHelper
    {
        public static string GetFullExceptionMessage(this Exception ex)
        {
            string message = ex.Message + "|" + ex.StackTrace;

            if (ex.InnerException != null)
            {
                message += "\n\t" + GetFullExceptionMessage(ex.InnerException);
            }

            return message;
        }

        public static IEnumerable<T> FindException<T>(this Exception ex) where T : Exception
        {
            var result = new List<T>();
            if (ex is AggregateException)
            {
                result.AddRange(((AggregateException)ex).InnerExceptions.SelectMany(x => x.FindException<T>()));
            }
            else
            {
                if (ex is T)
                {
                    result.Add((T)ex);
                }
                if (ex.InnerException != null)
                {
                    result.AddRange(ex.InnerException.FindException<T>());
                }
            }

            return result;
        }
    }
}