using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading;
using System.Threading.Tasks;
using System.Web.Http.Controllers;
using System.Web.Http.Filters;

namespace PartSource.Filters
{
  public class LocalizationAttribute : Attribute, IActionFilter, IFilter
  {
    public bool AllowMultiple
    {
      get
      {
        return false;
      }
    }

    public async Task<HttpResponseMessage> ExecuteActionFilterAsync(HttpActionContext actionContext, CancellationToken cancellationToken, Func<Task<HttpResponseMessage>> continuation)
    {
      foreach (StringWithQualityHeaderValue qualityHeaderValue in (IEnumerable<StringWithQualityHeaderValue>) ((IEnumerable<string>) actionContext.Request.Headers.AcceptLanguage.ToString().Split(',')).Select<string, StringWithQualityHeaderValue>(new Func<string, StringWithQualityHeaderValue>(StringWithQualityHeaderValue.Parse)).OrderByDescending<StringWithQualityHeaderValue, double>((Func<StringWithQualityHeaderValue, double>) (s => s.Quality.GetValueOrDefault(1.0))))
        ;
      return await continuation();
    }
  }
}