BeWoPlaner/Shared/AppSender/AppRequestSender.cs

using BS.Shared.DataContracts;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;

namespace BS.Shared.AppSender
{
	public static class AppRequestSender
	{
		private static readonly string GETSERVER_URL = "https://support.bewoplaner.de/api/getserver.php?k={0}&t=0";

		public static string GetServerFromTenant(string tenant)
		{
#if DEBUG
			return "localhost:3777";
#endif
			try
			{
				String url = String.Format(GETSERVER_URL, tenant);
				using (WebClient client = new WebClient())
				{
					//MessageBox.Show(hostAddress);
					byte[] response = client.UploadValues(url, "POST", new NameValueCollection());

					String server = System.Text.Encoding.ASCII.GetString(response);

					return server;
				}
			}
			catch (Exception ex)
			{
				return null;
			}
		}

		public static Res Send<Req, Res>(Req request, string url, string tenant = null) where Req : AppRequestDC where Res : AppResponseDC
		{
			if (tenant != null)
				request.Tenant = tenant;

			var data = JsonConvert.SerializeObject(request);

			var response_app8_str = Send(url, data, request.Tenant);

			if (string.IsNullOrEmpty(response_app8_str))
				return null;

			return JsonConvert.DeserializeObject<Res>(response_app8_str);
		}

		public static async Task<Res> SendAsync<Req, Res>(Req request, string url, string tenant, long? useroid = null) where Req : AppRequestDC where Res : AppResponseDC
		{
			request.Tenant = tenant;

			var data = JsonConvert.SerializeObject(request);

			var response_app8_str = await SendAsync(url, data, tenant, useroid);

			if (string.IsNullOrEmpty(response_app8_str))
				return null;

			return JsonConvert.DeserializeObject<Res>(response_app8_str);
		}

		private static string Send(string url, string dataString, string tenant)
		{
			string response_app8_str;

			url += "?tenant=" + tenant;

			using (WebClient client = new WebClient())
			{
				client.Encoding = Encoding.UTF8;

				client.Headers.Add(HttpRequestHeader.ContentType, "application/json");

				response_app8_str = client.UploadString(url, "POST", dataString);
			}

			return response_app8_str;
		}

		private static async Task<string> SendAsync(string url, string dataString, string tenant, long? useroid = null)
		{
			string response;

			url += "?tenant=" + tenant;

			if (useroid.HasValue)
				url += "&user=" + useroid.Value;

			using (WebClient client = new WebClient())
			{
				client.Encoding = Encoding.UTF8;

				client.Headers.Add(HttpRequestHeader.ContentType, "application/json");

				response = await client.UploadStringTaskAsync(url, "POST", dataString);
			}

			return response;
		}
	}
}