More update code. almost there.

NzbDrone.Update/Program.cs

@@ -1,15 +1,78 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
-using System.Text;
+using NLog;
+using NzbDrone.Common;
+using NzbDrone.Update.Providers;
 
 namespace NzbDrone.Update
 {
-    class Program
+    public class Program
     {
-        static void Main(string[] args)
+        private readonly UpdateProvider _updateProvider;
+        private readonly ProcessProvider _processProvider;
+
+        private static readonly Logger logger = LogManager.GetCurrentClassLogger();
+
+        public Program(UpdateProvider updateProvider, ProcessProvider processProvider)
         {
-            
+            _updateProvider = updateProvider;
+            _processProvider = processProvider;
+        }
+
+        public static void Main(string[] args)
+        {
+            try
+            {
+                Console.WriteLine("Starting NzbDrone Update Client");
+
+                LogConfiguration.RegisterConsoleLogger(LogLevel.Trace);
+                LogConfiguration.RegisterUdpLogger();
+                LogConfiguration.RegisterExceptioneer();
+                LogConfiguration.Reload();
+
+                logger.Info("Initializing update application");
+
+                var enviromentProvider = new EnviromentProvider();
+                var processProvider = new ProcessProvider();
+                var serviceProvider = new ServiceProvider();
+                var diskProvider = new DiskProvider();
+
+                var updateProvider = new UpdateProvider(diskProvider, serviceProvider, processProvider, enviromentProvider);
+
+                new Program(updateProvider, processProvider).Start(args);
+            }
+            catch (Exception e)
+            {
+                logger.Fatal("An error has occurred while applying update.", e);
+            }
+        }
+
+        public void Start(string[] args)
+        {
+            VerfityArguments(args);
+            int processId = ParseProcessId(args);
+
+            string appPath = _processProvider.GetProcessById(processId).StartPath;
+
+            logger.Info("Starting update process");
+            _updateProvider.Start(appPath);
+        }
+
+        private int ParseProcessId(string[] args)
+        {
+            int id = 0;
+            if (!Int32.TryParse(args[0], out id) || id <= 0)
+            {
+                throw new ArgumentOutOfRangeException("Invalid process id: " + args[0]);
+            }
+
+            return id;
+        }
+
+        private void VerfityArguments(string[] args)
+        {
+            if (args == null || args.Length != 2)
+                throw new ArgumentException("Wrong number of parameters were passed in.");
         }
     }
 }