create GET_LOGS_IN_LAST_X_MINUTES procedure.

implement logs in last x minute check.
can be configured from app.config file using "SwipeTimeGap" configuration. defaults to 3 minutes if configuration is not there.
#36

DataCenter_Windows/WindowsDataCenter/SQLiteRepository/SQLiteProcedures.cs

@@ -2,6 +2,7 @@ namespace SQLiteRepository
 {
     internal static class SQLiteProcedures
     {
+        public const string GET_LOGS_IN_LAST_X_MINUTES= "select * from TimeLogDb where "+nameof(TimeLogDb.SwipeEventDateTime)+" > ? AND "+nameof(TimeLogDb.UserId_FK)+"=?";
         public const string GET_TIMELOGS = "select * from "+nameof(TimeLogDb)+ " where (" + nameof(TimeLogDb.UserId_FK) + "=? AND " + nameof(TimeLogDb.CalendarWeek) + "=? and " + nameof(TimeLogDb.Year) + "=?)";
         public const string GET_ALL_USERS = "select * from " + nameof(UserIdentity);
         public const string GET_USER_BY_ID = "select * from " + nameof(UserIdentity) + " where " + nameof(UserIdentity.Id) + "=?";

DataCenter_Windows/WindowsDataCenter/SQLiteRepository/SQLiteRepository.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Configuration;
 using System.Globalization;
 using System.IO;
 using System.Linq;
@@ -349,6 +350,21 @@ namespace SQLiteRepository
             // Get The User Direction (are they going in or out)?
             var logDirection = GetLogDirection(ident.UserId_FK);
 
+            #region Check the user hasnt registered an event in the last few minutes..
+
+            var hysteresisThresholdMinutes = Convert.ToInt32(ConfigurationManager.AppSettings["SwipeTimeGap"] ?? "3");
+            var threshold = DateTime.UtcNow.AddMinutes(0 - hysteresisThresholdMinutes);
+            var logs = _connection.Query<TimeLogDb>(
+                SQLiteProcedures.GET_LOGS_IN_LAST_X_MINUTES,
+                threshold, ident.UserId_FK);
+            if (logs.Any())
+            {
+                logId = -1;
+                return OperationResponse.FAILED;
+            }
+
+            #endregion
+
             #region Get the current time (for swiping). and calendar week/year to help recall the data.
             var logTime = DateTime.UtcNow;
             var calendarWeek = GetIso8601CalendarWeek(logTime);

DataCenter_Windows/WindowsDataCenter/WindowsDataCenter/App.config

@@ -3,6 +3,7 @@
   <appSettings>
     <add key="NLogConfigFilePath" value="Configs/NLogConfig.xml" />
     <add key="DefaultPageSize" value="20"/>
+    <add key="SwipeTimeGap" value="20"/>
   </appSettings>
   <startup>
     <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />

DataCenter_Windows/WindowsDataCenter/WindowsDataServiceHost/App.config

@@ -3,6 +3,7 @@
   <appSettings>
     <add key="NLogConfigFilePath" value="Configs/NLogConfig.xml" />
     <add key="DefaultPageSize" value="20"/>
+    <add key="SwipeTimeGap" value="20"/>
   </appSettings>
     <startup> 
         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />