ErrorResult.cs

ErrorResult.cs

using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Formatting;
using System.Net.Http.Headers;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Web.Http;

namespace WiredViews.WIR03.Web.Api.Results
{
    public class ErrorResult : IHttpActionResult
    {
        private static JsonMediaTypeFormatter formatter;
        private static JsonSerializerSettings settings;

        private readonly object _errorMessage;
        private readonly HttpRequestMessage _requestMessage;
        private readonly HttpStatusCode _statusCode;

        static ErrorResult()
        {
            formatter = new JsonMediaTypeFormatter();
            settings = formatter.SerializerSettings;

            settings.Formatting = Formatting.Indented;

            // UTC Date serialization configuration
            settings.DateFormatHandling = DateFormatHandling.IsoDateFormat;
            settings.DateTimeZoneHandling = DateTimeZoneHandling.Utc;
            settings.DateFormatString = "yyyy-MM-ddTHH:mm:ss.fffK";

            settings.ContractResolver = new CamelCasePropertyNamesContractResolver();
        }

        public ErrorResult(HttpRequestMessage requestMessage, HttpStatusCode statusCode, string errorMessage)
        {
            _requestMessage = requestMessage;
            _statusCode = statusCode;
            _errorMessage = new { Message = errorMessage };
        }

        public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
        {
            var response = _requestMessage.CreateResponse(_statusCode, _errorMessage, formatter, new MediaTypeHeaderValue("application/json"));
            return Task.FromResult(response);
        }
    }
}