Add item start/end time support

Author: orbyone

Sensible.PredictionIO.NET/AddItemRequestBuilder.cs

@@ -33,6 +33,14 @@ public RestClient Build()
             RestRequest.AddParameter("pio_inactive", _item.Inactive.ToString().ToLower());
             RestRequest.AddParameter("pio_price", _item.Price.ToString(CultureInfo.InvariantCulture));
             RestRequest.AddParameter("pio_profit", _item.Profit.ToString(CultureInfo.InvariantCulture));
+            if (_item.StartTime > DateTime.MinValue)
+            {
+                RestRequest.AddParameter("pio_startT", _item.StartTimeSeconds);
+            }
+            if (_item.EndTime > DateTime.MinValue)
+            {
+                RestRequest.AddParameter("pio_endT", _item.EndTimeSeconds);
+            }
             return client;
         }
     }

Sensible.PredictionIO.NET/Item.cs

@@ -9,6 +9,8 @@ namespace Sensible.PredictionIO.NET
 {
     public class Item
     {
+        private static DateTime _epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+
         [DeserializeAs(Name = "pio_iid")]
         public string ItemId { get; set; }
 
@@ -27,5 +29,29 @@ public class Item
         [DeserializeAs(Name = "pio_profit")]
         public double Profit { get; set; }
 
+        [DeserializeAs(Name = "pio_startT")]
+        public long StartTimeSeconds { get; set; }
+
+        [DeserializeAs(Name = "pio_endT")]
+        public long EndTimeSeconds { get; set; }
+
+        public DateTime StartTime
+        {
+            get
+            {
+                return StartTimeSeconds == 0 ? DateTime.MinValue : _epoch.AddSeconds(StartTimeSeconds);
+            }
+            set { StartTimeSeconds = (long)(value - _epoch).TotalSeconds; }
+        }
+
+        public DateTime EndTime
+        {
+            get
+            {
+                return EndTimeSeconds == 0 ? DateTime.MinValue : _epoch.AddSeconds(EndTimeSeconds);
+            }
+            set { EndTimeSeconds = (long)(value - _epoch).TotalSeconds; }
+        }
+
     }
 }