Reorganize auto-start and default feed reader settings

Application/SystemConfiguration.cs

@@ -0,0 +1,95 @@
+using Common.Wpf.Extensions;
+using Microsoft.Win32;
+using System;
+using System.IO;
+using System.Reflection;
+using System.Windows;
+
+namespace FeedCenter
+{
+    public static class SystemConfiguration
+    {
+        public static void SetDefaultFeedReader(bool value)
+        {
+            // Get the location of the assembly
+            var assemblyLocation = Assembly.GetEntryAssembly().Location;
+
+            // Open the registry key (creating if needed)
+            using (var registryKey = Registry.CurrentUser.CreateSubKey("Software\\Classes\\feed", RegistryKeyPermissionCheck.ReadWriteSubTree))
+            {
+                if (registryKey == null)
+                    return;
+
+                // Write the handler settings
+                registryKey.SetValue(string.Empty, "URL:Feed Handler");
+                registryKey.SetValue("URL Protocol", string.Empty);
+
+                // Open the icon subkey (creating if needed)
+                using (var subKey = registryKey.CreateSubKey("DefaultIcon", RegistryKeyPermissionCheck.ReadWriteSubTree))
+                {
+                    if (subKey != null)
+                    {
+                        // Write the assembly location
+                        subKey.SetValue(string.Empty, assemblyLocation);
+
+                        // Close the subkey
+                        subKey.Close();
+                    }
+                }
+
+                // Open the subkey for the command (creating if needed)
+                using (var subKey = registryKey.CreateSubKey("shell\\open\\command", RegistryKeyPermissionCheck.ReadWriteSubTree))
+                {
+                    if (subKey != null)
+                    {
+                        // Write the assembly location and parameter
+                        subKey.SetValue(string.Empty, string.Format("\"{0}\" %1", assemblyLocation));
+
+                        // Close the subkey
+                        subKey.Close();
+                    }
+                }
+
+                // Close the registry key
+                registryKey.Close();
+            }
+        }
+
+        public static bool UseDebugPath
+        {
+            get
+            {
+                return Environment.CommandLine.IndexOf("/debugPath", StringComparison.InvariantCultureIgnoreCase) != -1;
+            }
+        }
+
+        public static string DataDirectory
+        {
+            get
+            {
+                return UseDebugPath ? Path.GetDirectoryName(Assembly.GetEntryAssembly().Location) : UserSettingsPath;
+            }
+        }
+
+        public static string UserSettingsPath
+        {
+            get
+            {
+                // If we're running in debug mode then use a local path for the database and logs
+                if (UseDebugPath)
+                    return Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
+
+                // Get the path to the local application data directory
+                var path = Path.Combine(
+                    Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+                    Properties.Resources.ApplicationName);
+
+                // Make sure it exists - create it if needed
+                if (!Directory.Exists(path))
+                    Directory.CreateDirectory(path);
+
+                return path;
+            }
+        }
+    }
+}