Do not schedule notifications old then 1 minute (Windows)

src/windows/LocalNotificationProxy/LocalNotificationProxy/LocalNotification/Builder.cs

@@ -168,7 +168,21 @@ namespace LocalNotificationProxy.LocalNotification
         {
             var xml = toast.GetXml();
             var at = this.Content.Date;
-            var notification = new ScheduledToastNotification(xml, at);
+            ScheduledToastNotification notification;
+
+            if (!at.HasValue)
+            {
+                return null;
+            }
+
+            try
+            {
+                notification = new ScheduledToastNotification(xml, at.Value);
+            }
+            catch
+            {
+                return null;
+            }
 
             notification.Id = this.Content.Id;
             notification.Tag = this.Options.Id.ToString();

src/windows/LocalNotificationProxy/LocalNotificationProxy/LocalNotification/Every.cs

@@ -92,9 +92,9 @@ namespace LocalNotificationProxy.LocalNotification
             var p = this.ToArray();
             var today = DateTime.Today;
 
-            p[2] = this.Day > 0 ? this.Day : today.Day;
-            p[3] = this.Month > 0 ? this.Month : today.Month;
-            p[4] = this.Year > 0 ? this.Year : today.Year;
+            p[2] = this.DayIsVariable ? today.Day : this.Day;
+            p[3] = this.MonthIsVariable ? today.Month : this.Month;
+            p[4] = this.YearIsVariable ? today.Year : this.Year;
 
             return new DateTime(p[4], p[3], p[2], p[1], p[0], 0);
         }

src/windows/LocalNotificationProxy/LocalNotificationProxy/LocalNotification/Manager.cs

@@ -47,14 +47,19 @@ namespace LocalNotificationProxy.LocalNotification
             foreach (Options options in notifications)
             {
                 var builder = new Builder(options);
-                ScheduledToastNotification toast;
 
                 do
                 {
-                    toast = builder.Build();
+                    var toast = builder.Build();
+
+                    if (toast != null)
+                    {
                         ToastNotifier.AddToSchedule(toast);
+                    }
+
                     builder.MoveNext();
-                } while (builder.HasNext());
+                }
+                while (builder.HasNext());
             }
         }
 

src/windows/LocalNotificationProxy/LocalNotificationProxy/LocalNotification/Notification.cs

@@ -288,7 +288,7 @@
         /// <summary>
         /// Gets the date when to trigger the notification.
         /// </summary>
-        public DateTime Date
+        public DateTime? Date
         {
             get
             {

src/windows/LocalNotificationProxy/LocalNotificationProxy/LocalNotification/Trigger.cs

@@ -61,7 +61,7 @@ namespace LocalNotificationProxy.LocalNotification
         /// <summary>
         /// Gets the date when to trigger the notification.
         /// </summary>
-        internal DateTime Date
+        internal DateTime? Date
         {
             get
             {
@@ -70,10 +70,30 @@ namespace LocalNotificationProxy.LocalNotification
                     this.triggerDate = this.Every is Every ? this.GetRelDate() : this.GetFixDate();
                 }
 
+                if (!this.triggerDate.HasValue)
+                {
+                    return null;
+                }
+
                 var date = this.GetNextTriggerDate();
-                var minDate = DateTime.Now.AddSeconds(0.1);
+                var minDate = DateTime.Now.AddSeconds(0.2);
 
-                return (date < minDate) ? minDate : date;
+                if (!date.HasValue)
+                {
+                    return null;
+                }
+
+                if (date >= minDate)
+                {
+                    return date;
+                }
+
+                if ((minDate - date).Value.TotalMinutes <= 1)
+                {
+                    return minDate;
+                }
+
+                return null;
             }
         }
 
@@ -148,17 +168,22 @@ namespace LocalNotificationProxy.LocalNotification
         /// Gets the date when to trigger the notification.
         /// </summary>
         /// <returns>The first matching date specified by trigger.every</returns>
-        private DateTime GetRelDate()
+        private DateTime? GetRelDate()
         {
             var every = this.Every as Every;
             var date = every.ToDateTime();
             var now = DateTime.Now;
 
-            if (date >= now || date.Year < now.Year)
+            if (date >= now)
             {
                 return date;
             }
 
+            if (date.Year < now.Year)
+            {
+                return null;
+            }
+
             if (date.Month < now.Month)
             {
                 switch (every.Interval)
@@ -240,14 +265,14 @@ namespace LocalNotificationProxy.LocalNotification
                 }
             }
 
-            return date;
+            return null;
         }
 
         /// <summary>
         /// Calculates the next trigger date by adding (interval * occurence)
         /// </summary>
         /// <returns>The next valid trigger date</returns>
-        private DateTime GetNextTriggerDate()
+        private DateTime? GetNextTriggerDate()
         {
             var every = this.Every is Every ? (this.Every as Every).Interval : this.Every;
             var date = this.triggerDate.Value;
@@ -285,7 +310,7 @@ namespace LocalNotificationProxy.LocalNotification
             }
             catch
             {
-                return date;
+                return null;
             }
         }
     }