Change broker response on invalid id

Now just send back a blank response

PlantBox.Broker/ClientManager.cs

@@ -23,12 +23,17 @@ namespace PlantBox.Broker
             ulong id = packet.ID;
             PlantBox plantBox = Broker.PlantBoxesManager[id];
 
+            CaptorsResponse response;
+
             if (plantBox == null)
             {
-                throw new InvalidOperationException($"This PlantBox (${id}) does not exist");
+                response = new CaptorsResponse(0, 0, 0, 0);
+            }
+            else
+            {
+                response = new CaptorsResponse(plantBox.Humidity.Value, plantBox.Luminosity.Value, plantBox.Temperature.Value, plantBox.TankLevel);
             }
 
-            var response = new CaptorsResponse(plantBox.Humidity.Value, plantBox.Luminosity.Value, plantBox.Temperature.Value, plantBox.TankLevel);
             commandStream.Send(response.ToCommandPacket(id));
         }
 
@@ -59,11 +64,14 @@ namespace PlantBox.Broker
             PlantBox plantBox = Broker.PlantBoxesManager[id];
             int count = historicRequest.Number;
 
+            HistoricResponse response;
+
             if (plantBox == null)
             {
-                throw new InvalidOperationException($"This PlantBox (${id}) does not exist");
+                response = new HistoricResponse(TimeSpan.MinValue, Array.Empty<double>(), Array.Empty<double>(), Array.Empty<double>());
             }
-
+            else
+            {
                 HistoricManager historic = plantBox.HistoricManager;
 
                 IReadOnlyList<CaptorsValue> captorsValues;
@@ -88,13 +96,15 @@ namespace PlantBox.Broker
                         throw new InvalidOperationException("How did you just got here? Even 『 』can't");
                 }
 
-            var response = new HistoricResponse
+                response = new HistoricResponse
                 (
                     DateTime.Now - plantBox.LastMeasureDate,
                     FillArray(captorsValues.Select(x => x.Humidity).ToArray(), count),
                     FillArray(captorsValues.Select(x => x.Luminosity).ToArray(), count),
                     FillArray(captorsValues.Select(x => x.Temperature).ToArray(), count)
                 );
+            }
+
             commandStream.Send(response.ToCommandPacket(id));
         }
 
@@ -104,20 +114,24 @@ namespace PlantBox.Broker
             ulong id = packet.ID;
             PlantBox plantBox = Broker.PlantBoxesManager[id];
 
+            InfoResponse response;
+
             if (plantBox == null)
             {
-                throw new InvalidOperationException($"This PlantBox (${id}) does not exist");
+                response = new InfoResponse("", default, default, 0, 0, 0, 0, 0, 0);
             }
-
+            else
+            {
                 plantBox.UpdateState();
 
-            var response = new InfoResponse
+                response = new InfoResponse
                 (
                     plantBox.Name, plantBox.Type, plantBox.State,
                     plantBox.Humidity.Min, plantBox.Humidity.Max,
                     plantBox.Luminosity.Min, plantBox.Luminosity.Max,
                     plantBox.Temperature.Min, plantBox.Temperature.Max
                 );
+            }
             commandStream.Send(response.ToCommandPacket(id));
         }