namespace LaaProductionWeb.API
{
    using Newtonsoft.Json;
    using System.Net;
    using System.Net.Http;
    using System.Text;
    using System.Threading;
    using System.Threading.Tasks;
    using System.Web.Http;
    using System.Web.Http.Results;

    public class ControllerBase : ApiController
    {
        protected override BadRequestResult BadRequest()
        {
            return new BadRequestModelResult(this);
        }
    }

    public class BadRequestModelResult : BadRequestResult
    {
        private readonly ApiController controller;

        public BadRequestModelResult(ApiController controller) : base(controller)
        {
            this.controller = controller;
        }

        public override Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
        {
            var errors = this.controller.ModelState.Errors();
            var errorsJson = JsonConvert.SerializeObject(errors);
            var httpResponseMessage = new HttpResponseMessage();
            httpResponseMessage.Content = new StringContent(errorsJson, Encoding.UTF8, "application/json");
            httpResponseMessage.ReasonPhrase = nameof(HttpStatusCode.BadRequest);
            httpResponseMessage.RequestMessage = controller.Request;
            httpResponseMessage.StatusCode = HttpStatusCode.BadRequest;

            return Task.FromResult(httpResponseMessage);
        }
    }
}