using Microsoft.AspNetCore.Mvc.ModelBinding;
using System.Text;

namespace Events.MVC.Util.Extensions
{
  public static class ModelStateExtensions
  {
    public static string GetErrorsString(this ModelStateDictionary modelState)
    {
      StringBuilder sb = new StringBuilder();
      foreach (var modelStateEntry in modelState)
      {
        if (modelStateEntry.Value.Errors.Count > 0)
        {
          string key = modelStateEntry.Key;
          string error = string.Join(", ", modelStateEntry.Value.Errors.Select(e => e.ErrorMessage));
          sb.AppendFormat("{0}: {1}; ", key, error);
        }
      }
      return sb.ToString();
    }
  }
}