optimize configuration class

1 files changed, 72 insertions, 26 deletions

diff --git a/src/Configuration.cs b/src/Configuration.cs
index 48c57c87..70923e60 100644
--- a/src/Configuration.cs
+++ b/src/Configuration.cs
@@ -22,18 +22,48 @@ using System;
 using System.Reflection;
 using System.IO;
 using System.Collections.Generic;
+using System.Threading;
 
 namespace Crow
 {
-	//TODO:maybe create iterator
+	public class ConfigItem {
+		Type type;
+		internal object curVal;
+		bool parsingNeeded = false;
+		public ConfigItem(object newVal){
+			curVal = newVal;
+		}
+		public ConfigItem(string newVal){
+			curVal = newVal;
+			parsingNeeded = true;
+		}
+		public T GetValue<T>(){
+			if (type == null)
+				type = typeof(T);
+			if (parsingNeeded) {
+				MethodInfo miParse = type.GetMethod ("Parse", new Type[] {typeof(string)});
+				if (miParse != null)
+					curVal = miParse.Invoke (null, new object[]{ curVal });
+				parsingNeeded = false;
+			}
+			return (T)Convert.ChangeType (curVal, type);
+		}
+		public void Set(object value){
+			curVal = value;
+		}
+	}
+	/// <summary>
+	/// Application wide Configuration utility
+	/// </summary>
 	public static class Configuration
 	{
+		volatile static bool isDirty = false;
 		static string configPath, configFileName = "app.config";
-		static Dictionary<string, string> items;
+		static Dictionary<string, ConfigItem> items;
 
 		static Configuration ()
 		{
-			items = new Dictionary<string, string> ();
+			items = new Dictionary<string, ConfigItem> ();
 			string configRoot =
 				Path.Combine(
 					Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
@@ -50,42 +80,58 @@ namespace Crow
 			string path = Path.Combine(configPath, configFileName);
 
 			if (File.Exists (path)) {
-				using (Stream s = new FileStream(path, FileMode.Open))
+				using (Stream s = new FileStream (path, FileMode.Open))
 					load (s);
-				return;
+			} else {
+				string defaultConfigResID = appName + ".default.config";
+				bool found = false;
+				foreach (string resIds in a.GetManifestResourceNames()) {
+					if (string.Equals (defaultConfigResID, resIds, StringComparison.OrdinalIgnoreCase)) {
+						using (Stream s = a.GetManifestResourceStream (defaultConfigResID))
+							load (s);
+						found = true;
+						break;
+					}
+				}
+				if (!found)
+					Console.WriteLine ("No Default Config found. ({0})", defaultConfigResID);
 			}
-
-			string defaultConfigResID = appName + ".default.config";
-			foreach (string resIds in a.GetManifestResourceNames()) {
-				if (string.Equals (defaultConfigResID, resIds, StringComparison.OrdinalIgnoreCase)) {
-					using (Stream s = a.GetManifestResourceStream (defaultConfigResID))
-						load (s);
-					return;
+			startSavingThread ();
+		}
+		static void startSavingThread(){
+			Thread t = new Thread (savingThread);
+			t.IsBackground = true;
+			t.Start ();
+		}
+		static void savingThread(){
+			while(true){
+				if (isDirty) {
+					save ();
+					isDirty = false;
 				}
+				Thread.Sleep (1000);
 			}
-			Console.WriteLine ("No Default Config found. ({0})", defaultConfigResID);
 		}
 		public static T Get<T>(string key)
 		{
-			if (!items.ContainsKey (key))
-				return default(T);
-			Type type = typeof(T);
-			MethodInfo miParse = type.GetMethod ("Parse", new Type[] {typeof(string)});
-			if (miParse == null)
-				return (T)Convert.ChangeType (items [key], typeof(T));
-
-			return (T)Convert.ChangeType (miParse.Invoke (null, new object[]{ items [key] }), type);
+			return !items.ContainsKey (key) ? default(T) : items [key].GetValue<T> ();
 		}
 		public static void Set<T>(string key, T value)
 		{
-			items [key] = value.ToString();
-			save ();
+			if (!items.ContainsKey (key)) {
+				lock(items)
+					items[key] = new ConfigItem (value);
+			}else
+				items[key].Set (value);
+			isDirty = true;
 		}
 		static void save(){
 			using (Stream s = new FileStream(Path.Combine(configPath, configFileName),FileMode.Create)){
 				using (StreamWriter sw = new StreamWriter (s)) {
-					foreach (string key in items.Keys) {
-						sw.WriteLine(key + "=" + items[key]);
+					lock (items) {
+						foreach (string key in items.Keys) {
+							sw.WriteLine (key + "=" + (string)items [key].curVal.ToString ());
+						}
 					}
 				}
 			}
@@ -99,7 +145,7 @@ namespace Crow
 					string[] tmp = l.Trim ().Split ('=');
 					if (tmp.Length != 2)
 						continue;
-					items[tmp [0].Trim ()] = tmp [1].Trim ();
+					items[tmp [0].Trim ()] = new ConfigItem(tmp [1].Trim ());
 				}
 			}
 		}