Weiter gehts

Matomat/Automat.cs

@@ -8,6 +8,7 @@ namespace Matomat
     class Automat
     {
         private User user;
+        private bool shutdown = false;
         internal void doJob(int userId, long codeId)
         {
             user = findUser(userId);
@@ -20,5 +21,10 @@ namespace Matomat
         {
             return new User(userId);
         }
+
+        internal bool die()
+        {
+            return shutdown;
+        }
     }
 }

Matomat/BarcodeReader.cs

@@ -9,6 +9,7 @@ namespace Matomat
     {
         internal long getCodeID()
         {
+            Console.ReadKey();
             return 1234567890123;
         }
     }

Matomat/Factory.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Matomat
+{
+    class Factory
+    {
+        static LCDDisplay lcd_i = null;
+        internal static LCDDisplay getLCDDisplay()
+        {
+            if (lcd_i == null)
+                lcd_i = Factory._createLCDDisplay();
+            return lcd_i;
+        }
+
+        private static LCDDisplay _createLCDDisplay()
+        {
+            LCDDisplay lcd = LCDDisplay.getInstance("lpd1");
+            return lcd;
+        }
+    }
+}

Matomat/Helper.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+using System.Runtime.Serialization;
+using System.Runtime.Serialization.Formatters.Binary;
+using System.IO;
+
+namespace Matomat
+{
+    class Helper
+    {
+        internal static double Serialize(string text)
+        {
+            Stream stream = new MemoryStream(255);
+            IFormatter formatter = new BinaryFormatter();
+            formatter.Serialize(stream, text);
+            stream.Position = 0;
+            byte[] bytes = new byte[(int)stream.Length];
+            stream.Read(bytes, 0, (int)stream.Length);
+            return BitConverter.ToDouble(bytes, 0);
+        }
+    }
+}

Matomat/LCDDisplay.cs

@@ -2,19 +2,123 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Threading;
+
 
 namespace Matomat
 {
     class LCDDisplay
     {
-        internal static void print(string text)
+        private class instance
         {
-            throw new NotImplementedException();
+            public LCDDisplay lCDDisplay;
+            public double signature;
+
+            public instance(LCDDisplay lCDDisplay, double signature)
+            {
+                this.lCDDisplay = lCDDisplay;
+                this.signature = signature;
+            }
+        }
+        private class Message
+        {
+            public string text;
+            public Status status;
+            public int time;
+
+            public Message(string text, Status status, int time)
+            {
+                this.text = text;
+                this.status = status;
+                this.time = time;
+            }
+        }
+        static List<instance> instances;
+        private string port;
+        private Queue<Message> messages;
+        private volatile bool _shouldStop;
+
+        public LCDDisplay(string port)
+        {
+            this.port = port;
+            messages = new Queue<Message>();
+            Thread workerThread = new Thread(this.DoWork);
+            workerThread.Start();
+            while (!workerThread.IsAlive);
+        }
+        public void DoWork()
+        {
+            Message m;
+            DateTime timeout = new DateTime();
+            while (!_shouldStop)
+            {
+                Thread.Sleep(1);
+                if (messages.Count != 0)
+                {
+                    if (timeout.Ticks < DateTime.Now.Ticks)
+                    {
+                        m = messages.Dequeue();
+                        timeout = DateTime.Now.AddSeconds(m.time);
+                        display(m.text, m.status);
+                    }
+                }
+                
+            }
         }
 
-        internal static void print(string text, int time)
+        private void display(string text, Status status)
         {
-            throw new NotImplementedException();
+            Console.WriteLine(text);
+        }
+        public enum Status
+        {
+            OK,
+            Warn,
+            Error
+        }
+        internal void print(string text)
+        {
+            this.anzeige(text, Status.OK, 0);
+        }
+
+        private void anzeige(string text, Status status, int time)
+        {
+            Message m = new Message(text, status, time);
+            messages.Enqueue(m);
+        }
+
+        internal void print(string text, int time)
+        {
+            this.anzeige(text, Status.OK, time);
+        }
+
+        internal void print(string text, Status status)
+        {
+            this.anzeige(text, status, 0);
+        }
+
+        internal void print(string text, Status status, int time)
+        {
+            this.anzeige(text, status, time);
+        }
+
+        internal static LCDDisplay getInstance(string port)
+        {
+            if (instances == null)
+                instances = new List<instance>();
+            double signature = Helper.Serialize(port);
+            foreach (instance i in instances)
+            {
+                if (i.signature == signature)
+                    return i.lCDDisplay;
+            }
+            instance instance = new instance(new LCDDisplay(port),signature);
+            instances.Add(instance);
+            return instance.lCDDisplay;
+        }
+        public void RequestStop()
+        {
+            _shouldStop = true;
         }
     }
 }

Matomat/Matomat.csproj

@@ -45,6 +45,8 @@
   <ItemGroup>
     <Compile Include="Automat.cs" />
     <Compile Include="BarcodeReader.cs" />
+    <Compile Include="Factory.cs" />
+    <Compile Include="Helper.cs" />
     <Compile Include="LCDDisplay.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />

Matomat/RFIDReader.cs

@@ -9,6 +9,7 @@ namespace Matomat
     {
         internal int getCardID()
         {
+            Console.ReadKey();
             return 0x1234;
         }
     }

Matomat/User.cs

@@ -25,11 +25,13 @@ namespace Matomat
 
         internal bool vaild()
         {
+            LCDDisplay lcd = Factory.getLCDDisplay();
             if (!found)
             {
-                LCDDisplay.print("User wurde nich gefunden",5);
+                lcd.print("User wurde nich gefunden",LCDDisplay.Status.Error,5);
                 return false;
             }
+            return true;
         }
 
     }

Matomat/Worker.cs

@@ -11,22 +11,25 @@ namespace Matomat
         private RFIDReader rfid;
         private BarcodeReader barcode;
         private Automat automat;
+        private LCDDisplay lcd;
         public Worker()
         {
             rfid = new RFIDReader();
             barcode = new BarcodeReader();
             automat = new Automat();
+            lcd = Factory.getLCDDisplay();
         }
         public void DoWork()
         {
             while (!_shouldStop)
             {
-                LCDDisplay.print("Bitte Sudierendenausweis über den RFID Leser halten.");
+                lcd.print("Bitte Sudierendenausweis über den RFID Leser halten.");
                 int userId = rfid.getCardID();
-                LCDDisplay.print("Bitte Produkt / Code über den Barcodeleser halten.");
+                lcd.print("Bitte Produkt / Code über den Barcodeleser halten.");
                 long codeId = barcode.getCodeID();
                 automat.doJob(userId, codeId);
-
+                if (automat.die())
+                    RequestStop();
             }
             Console.WriteLine("worker thread: terminating gracefully.");
         }