// GET: Faktury
        public ActionResult Index(string NIP, string Data_od, string Data_do)
        {
            HttpWebRequest OdpytanieAPI = (HttpWebRequest)WebRequest.Create("https://localhost:44306/api/Faktury?NIP=" + NIP + "&Data_od="+ Data_od + "&Data_do="+ Data_do);
            OdpytanieAPI.ContentType = "application/json";
            var response = (HttpWebResponse)OdpytanieAPI.GetResponse();
            string text;
            using (var sr = new StreamReader(response.GetResponseStream()))
            {
                text = sr.ReadToEnd();
            }

            FakturyOut fakturaOut = JsonConvert.DeserializeObject<FakturyOut>(text);

            var enumerable = new[] { fakturaOut };

            return View(enumerable);

        }
        public HttpResponseMessage GetSaldoFaktur(string NIP, string Data_od, string Data_do)
        {
            HttpWebRequest OdpytanieAPI = (HttpWebRequest)WebRequest.Create("https://api.mocki.io/v1/248c570e");

            //HttpWebRequest OdpytanieAPI = (HttpWebRequest)WebRequest.Create("https://api.mocki.io/v1/248c570e?NIP="+ NIP + "&Data_od="+ Data_od + "&Data_do="+ Data_do);
            OdpytanieAPI.ContentType = "application/json";
            var    response = (HttpWebResponse)OdpytanieAPI.GetResponse();
            string text;

            using (var sr = new StreamReader(response.GetResponseStream()))
            {
                text = sr.ReadToEnd();
            }

            List <FakturyIn> list = JsonConvert.DeserializeObject <List <FakturyIn> >(text);

            FakturyOut fakturyOut = new FakturyOut(0, 0, 0, 0, "");

            foreach (FakturyIn fakturaIn in list)
            {
                if (fakturaIn.Status != "Zapłacone")
                {
                    fakturyOut.IloscNieZaplacone   += 1;
                    fakturyOut.WartoscNieZaplacone += fakturaIn.Wartosc_faktury;
                }
                else
                {
                    fakturyOut.IloscZaplacone   += 1;
                    fakturyOut.WartoscZaplacone += fakturaIn.Wartosc_faktury;
                }
            }

            fakturyOut.SaldoOstateczne = (0 - fakturyOut.WartoscNieZaplacone).ToString("0.00", CultureInfo.InvariantCulture);

            var res = Request.CreateResponse(HttpStatusCode.OK);

            res.Content = new StringContent(JsonConvert.SerializeObject(fakturyOut), Encoding.UTF8, "application/json");
            return(res);
            // return Ok(fakturyOut);
        }