eyes-and-ears/src/EyesAndEars.UWP/EyesAndEars.UWP/Services/WebServices.cs

using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;

namespace EyesAndEars.UWP.Services {
    public static class WebServices {

        private static readonly HttpClient _client = new HttpClient();

        public static async Task<string> GetLightReading(string url, int deviceId) {
            _client.DefaultRequestHeaders.Accept.Clear();
            _client.DefaultRequestHeaders.Accept.Add(
                new MediaTypeWithQualityHeaderValue("application/json"));
            return await _client.GetStringAsync($"{url}/api/readings/latest/{deviceId}");
        }

    }
}