Add token expire time.

1 files changed, 32 insertions, 0 deletions

diff --git a/Timeline/Services/Clock.cs b/Timeline/Services/Clock.cs
new file mode 100644
index 00000000..98451ad9
--- /dev/null
+++ b/Timeline/Services/Clock.cs
@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Timeline.Services
+{
+    /// <summary>
+    /// Convenient for unit test.
+    /// </summary>
+    public interface IClock
+    {
+        /// <summary>
+        /// Get current time.
+        /// </summary>
+        /// <returns>Current time.</returns>
+        DateTime GetCurrentTime();
+    }
+
+    public class Clock : IClock
+    {
+        public Clock()
+        {
+
+        }
+
+        public DateTime GetCurrentTime()
+        {
+            return DateTime.Now;
+        }
+    }
+}