Combine layouts

Web/Utility/CustomExtensions.cs

@@ -2,10 +2,10 @@ using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
-using System.Linq.Expressions;
 using System.Reflection;
 using System.Text;
 using System.Web.Mvc;
+using MileageTraker.Web.Models;
 
 namespace MileageTraker.Web.Utility
 {
@@ -13,7 +13,10 @@ namespace MileageTraker.Web.Utility
 	{
 		public static string Wordify(this string str)
 		{
-			return str.Aggregate(string.Empty, (current, c) => current + (char.IsUpper(c) ? " " + c : c.ToString()));
+			return str.Aggregate(
+				String.Empty, 
+				(current, c) => 
+					current + (Char.IsUpper(c) ? " " + c : c.ToString()));
 		}
 
 		private static T GetAttribute<T>(this Enum enumeration) where T : Attribute
@@ -48,13 +51,14 @@ namespace MileageTraker.Web.Utility
 		public static IEnumerable<SelectListItem> GetSelectListItems(this Enum enumeration)
 		{
 			var type = enumeration.GetType();
-			return Enum.GetValues(type).OfType<Enum>().Select(e =>
-																   new SelectListItem
-																   {
-																	   Text = e.GetDisplayName(),
-																	   Value = e.ToString(),
-																	   Selected = e.Equals(enumeration)
-																   });
+			return Enum.GetValues(type)
+				.OfType<Enum>().Select(e =>
+				new SelectListItem
+				{
+					Text = e.GetDisplayName(),
+					Value = e.ToString(),
+					Selected = e.Equals(enumeration)
+				});
 		}
 
 		public static IEnumerable<SelectListItem> ToSelectList(this Type enumType, string selectedItem, string noItemSelected)
@@ -148,12 +152,12 @@ namespace MileageTraker.Web.Utility
 		public static string LowercaseFirst(string s)
 		{
 			// Check for empty string.
-			if (string.IsNullOrEmpty(s))
+			if (String.IsNullOrEmpty(s))
 			{
-				return string.Empty;
+				return String.Empty;
 			}
 			// Return char and concat substring.
-			return char.ToLower(s[0]) + s.Substring(1);
+			return Char.ToLower(s[0]) + s.Substring(1);
 		}
 
 		public static IEnumerable<int> GetNumbers()
@@ -161,15 +165,22 @@ namespace MileageTraker.Web.Utility
 			var i = 0;
 			while (true) yield return i++;
 		}
-
-		public static MvcHtmlString Concat(this MvcHtmlString f, MvcHtmlString s)
-		{
-			return MvcHtmlString.Create(f.ToString() + s);
-		}
 		
-		public static MvcHtmlString Concat(this MvcHtmlString f, string s)
+		/// <summary>
+		/// Users with activity date greater than this value are online
+		/// </summary>
+		public static DateTime UserOnlineThreshold()
 		{
-			return MvcHtmlString.Create(f + s);
+			return DateTime.UtcNow.Subtract(
+				TimeSpan.FromMinutes(
+					Convert.ToDouble(
+						System.Web.Security.Membership.UserIsOnlineTimeWindow)));
+		}
+
+		public static bool IsOnline(this User user)
+		{
+			return user.LastActivityDate != null 
+				&& user.LastActivityDate > UserOnlineThreshold();
 		}
 	}
 }