1 files changed, 86 insertions, 0 deletions
diff --git a/MediaBrowser.UI/Converters/LastSeenTextConverter.cs b/MediaBrowser.UI/Converters/LastSeenTextConverter.cs
new file mode 100644
index 000000000..746260210
--- /dev/null
+++ b/MediaBrowser.UI/Converters/LastSeenTextConverter.cs
@@ -0,0 +1,86 @@
+using MediaBrowser.Model.DTO;
+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace MediaBrowser.UI.Converters
+{
+    public class LastSeenTextConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            var user = value as DtoUser;
+
+            if (user != null)
+            {
+                if (user.LastActivityDate.HasValue)
+                {
+                    DateTime date = user.LastActivityDate.Value.ToLocalTime();
+
+                    return "Last seen " + GetRelativeTimeText(date);
+                }
+            }
+
+            return null;
+        }
+
+        private static string GetRelativeTimeText(DateTime date)
+        {
+            TimeSpan ts = DateTime.Now - date;
+
+            const int second = 1;
+            const int minute = 60 * second;
+            const int hour = 60 * minute;
+            const int day = 24 * hour;
+            const int month = 30 * day;
+
+            int delta = System.Convert.ToInt32(ts.TotalSeconds);
+
+            if (delta < 0)
+            {
+                return "not yet";
+            }
+            if (delta < 1 * minute)
+            {
+                return ts.Seconds == 1 ? "one second ago" : ts.Seconds + " seconds ago";
+            }
+            if (delta < 2 * minute)
+            {
+                return "a minute ago";
+            }
+            if (delta < 45 * minute)
+            {
+                return ts.Minutes + " minutes ago";
+            }
+            if (delta < 90 * minute)
+            {
+                return "an hour ago";
+            }
+            if (delta < 24 * hour)
+            {
+                return ts.Hours + " hours ago";
+            }
+            if (delta < 48 * hour)
+            {
+                return "yesterday";
+            }
+            if (delta < 30 * day)
+            {
+                return ts.Days + " days ago";
+            }
+            if (delta < 12 * month)
+            {
+                int months = System.Convert.ToInt32(Math.Floor((double)ts.Days / 30));
+                return months <= 1 ? "one month ago" : months + " months ago";
+            }
+
+            int years = System.Convert.ToInt32(Math.Floor((double)ts.Days / 365));
+            return years <= 1 ? "one year ago" : years + " years ago";
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}