namespace LaaProduction.Web.Controllers.API
{
    using Newtonsoft.Json;

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web.Http.ModelBinding;

    internal static class APIExtensions
    {
        public static string Content(this ModelStateDictionary modelStateDictionary)
        {
            var errors = new Dictionary<string, string>();

            foreach (var error in modelStateDictionary)
            {
                var errorKey = error
                    .Key
                    ?.Split(new[] { '.' }, StringSplitOptions.RemoveEmptyEntries)
                    ?.LastOrDefault();

                if (!string.IsNullOrWhiteSpace(errorKey))
                {
                    var errorMessage = error
                        .Value
                        .Errors
                        .FirstOrDefault()
                        .ErrorMessage;

                    errors[errorKey] = errorMessage;
                }
            }

            return JsonConvert.SerializeObject(errors, Formatting.Indented);
        }
    }
}