laatzen/Common/Service/MeterProcessState/Controllers/JsonConfigurationController.cs

namespace Xylem.Common.Service.MeterProcessState.Controllers
{
    using Newtonsoft.Json;

    using System.IO;
    using System.Web;
    using System.Web.Http;

    using Xylem.Common.Hardware.WaterMeter.Genesis.GenesisCore;

    public class JsonConfigurationController : ApiController
    {
        [HttpGet]
        public IHttpActionResult Get()
        {
            var dir = HttpContext.Current.Request.MapPath("../");

            Directory.CreateDirectory(dir);

            var file =  Path.Combine(dir, "configuration.json");

            if (!File.Exists(file))
            {
                File.WriteAllText(file, string.Empty);
            }

            var reader = new GenesisConfigurationReader(file);

            return this.Json(reader.Value, new JsonSerializerSettings
            {
                NullValueHandling = NullValueHandling.Ignore
            });
        }
    }
}