From a61195ca03b0bf1ea7c5d5ba3f071cbf461d348b Mon Sep 17 00:00:00 2001
From: Le Chau <chaulh@beetinnovators.com>
Date: Thu, 25 Jun 2020 09:22:24 +0700
Subject: [PATCH] =?UTF-8?q?Chuy=E1=BB=83n=20=C4=91=E1=BB=95i=20HttpWebRequ?=
 =?UTF-8?q?est=20sang=20HttpClient?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 AIParkingApplication/Statistic.cs | 83 +++++++++++++++----------------
 1 file changed, 39 insertions(+), 44 deletions(-)

diff --git a/AIParkingApplication/Statistic.cs b/AIParkingApplication/Statistic.cs
index 79cd852..ffaac09 100644
--- a/AIParkingApplication/Statistic.cs
+++ b/AIParkingApplication/Statistic.cs
@@ -6,6 +6,8 @@ using System.Net;
 using System.Web.Script.Serialization;
 using System.Diagnostics.SymbolStore;
 using System.Threading;
+using Newtonsoft.Json;
+using System.Net.Http;
 
 namespace AIParkingApplication
 {
@@ -26,62 +28,48 @@ namespace AIParkingApplication
             InitializeComponent();
             Thread thrStatistics = new Thread(new ThreadStart(GetStatistic));
             thrStatistics.Start();
-
         }
 
         private void GetStatistic()
         {
             while (true)
             {
-                string strGETRequest = GETDataFromServer("192.168.1.123", "80", "/api/statistics");
-                JavaScriptSerializer js = new JavaScriptSerializer();
-                var obj = js.Deserialize<dynamic>(strGETRequest);
-                Vehicle.NumberOfCar = obj["oto"];
-                Vehicle.NumberOfMoto = obj["moto"];
-                Vehicle.TotalIn = obj["total_in"];
-                Vehicle.TotelOut = obj["total_out"];
-                lblSoLuongXeMay?.Invoke(new Action(() =>
-                {
-                    lblSoLuongXeMay.Text = Vehicle.NumberOfMoto.ToString();
-                }));
-                lblSoLuongOto?.Invoke(new Action(() =>
-                {
-                    lblSoLuongOto.Text = Vehicle.NumberOfCar.ToString();
-                }));
-                lblVehicleTotalIn?.Invoke(new Action(() =>
-                {
-                    lblVehicleTotalIn.Text = Vehicle.TotalIn;
-                }));
-                lblVehicleTotalOut?.Invoke(new Action(() =>
-                {
-                    lblVehicleTotalOut.Text = Vehicle.TotelOut;
-                }));
+                GETDataFromServer();
                 Thread.Sleep(1000);
             }
         }
 
-        private string GETDataFromServer(string serverUrl, string apiPort, string apiPath)
+        private async void GETDataFromServer()
         {
-            string responseString = "";
-            string requestUriString = string.Format(AIPARKING_CLIENT_HTTP_API_REQUEST, serverUrl, apiPort, apiPath);
-            var request = (HttpWebRequest)WebRequest.Create(requestUriString);
-            string postData = $"";
-            byte[] data = Encoding.ASCII.GetBytes(postData);
-
-            request.Method = "GET";
-            request.ContentType = "application/x-www-form-urlencoded";
-            request.ContentLength = data.Length;
-
             try
             {
-                var response = (HttpWebResponse)request.GetResponse();
-                responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
-                Console.WriteLine(responseString);
+                using (var client = new HttpClient { BaseAddress = new Uri("http://192.168.1.123:80/"), Timeout = TimeSpan.FromMilliseconds(5000) })
+                {
+                    HttpResponseMessage response = await client.GetAsync("/api/statistics");
+                    response.EnsureSuccessStatusCode();
+                    var vehicle = await response.Content.ReadAsAsync<Vehicle>();
+                    lblSoLuongXeMay?.Invoke(new Action(() =>
+                    {
+                        lblSoLuongXeMay.Text = vehicle.NumberOfMoto.ToString();
+                    }));
+                    lblSoLuongOto?.Invoke(new Action(() =>
+                    {
+                        lblSoLuongOto.Text = vehicle.NumberOfCar.ToString();
+                    }));
+                    lblVehicleTotalIn?.Invoke(new Action(() =>
+                    {
+                        lblVehicleTotalIn.Text = vehicle.TotalIn;
+                    }));
+                    lblVehicleTotalOut?.Invoke(new Action(() =>
+                    {
+                        lblVehicleTotalOut.Text = vehicle.TotelOut;
+                    }));
+                }
             }
             catch (Exception ex)
             {
+                Console.WriteLine($"SendEngineRequest : {ex.Message}");
             }
-            return responseString;
         }
 
         private void Statistic_Load(object sender, EventArgs e)
@@ -107,12 +95,19 @@ namespace AIParkingApplication
             tlpStatisticTable.Controls.Add(lblSoLuongOto, 1, 2);
 
         }
-        static class Vehicle
+        public class Vehicle
         {
-            public static int NumberOfCar { get; set; }
-            public static int NumberOfMoto { get; set; }
-            public static string TotalIn { get; set; }
-            public static string TotelOut { get; set; }
+            [JsonProperty("oto")]
+            public int NumberOfCar { get; set; }
+
+            [JsonProperty("moto")]
+            public int NumberOfMoto { get; set; }
+            
+            [JsonProperty("total_in")]
+            public string TotalIn { get; set; }
+
+            [JsonProperty("total_out")]
+            public string TotelOut { get; set; }
         }
     }
 }