using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Wood.Util
{
    public static partial class Extensions
    {
        public static Exception GetOriginalException(this Exception ex)
        {
            if (ex.InnerException == null) return ex;

            return ex.InnerException.GetOriginalException();
        }

        public static string GetFullExceptionMessage(this Exception ex) {

            StringBuilder sbException = new StringBuilder();
            Exception exception = ex;
            sbException.AppendLine(exception.Message);
            while (exception.InnerException != null)
            {
                sbException.AppendLine(exception.InnerException.Message);
                exception = exception.InnerException;
            }

            return sbException.ToString();
        }

        public static List<string> GetAllErrorMessages(this ModelStateDictionary modelState)
        {
            var errors = new List<string>();

            foreach (var state in modelState)
            {
                foreach (var error in state.Value.Errors)
                {
                    errors.Add(error.ErrorMessage);
                }
            }

            return errors;
        }

    }
}