Added Taskmap sample code to potenAPI

FarmmapsPoten/PotenService.cs

@@ -82,10 +82,52 @@ namespace FarmmapsVRApoten
 
             return applianceMapItem;
 
-        }   
+        }
 
 
-	}
+        // Extra task making use of the zonering task to convert the planting distance in cm to number of seeds per m2
+        public async Task<Item> ConvertToCountPerAreaTroughZonering(Item cropfieldItem, Item geotiffItem, float rijBreedte_m)
+        {
+            var zoneringTaskRequest = new TaskRequest() { TaskType = VRAZONERING_TASK };
+            zoneringTaskRequest.attributes["formula"] = $"((100/[0])/{rijBreedte_m.ToString()})";
+            zoneringTaskRequest.attributes["output"] = "{\"Name\":\"CountPerAreaConversion\",\"Quantity\":\"CountPerArea\",\"Unit\":\"#/m2\"}";
+            zoneringTaskRequest.attributes["inputs"] = $"{{\"ItemCode\":{geotiffItem.Code},\"LayerName\":null\"}}";
+
+            var taskCode = await _farmmapsApiService.QueueTaskAsync(cropfieldItem.Code, zoneringTaskRequest);
+
+            await PollTask(TimeSpan.FromSeconds(5), async (tokenSource) =>
+            {
+                var itemTaskStatus = await _farmmapsApiService.GetTaskStatusAsync(cropfieldItem.Code, taskCode);
+                _logger.LogInformation($"Waiting on convertion to Count per area through zoneringTast; Status: {itemTaskStatus.State}");
+                if (itemTaskStatus.IsFinished)
+                    tokenSource.Cancel();
+            });
+
+            var itemTask = await _farmmapsApiService.GetTaskStatusAsync(cropfieldItem.Code, taskCode);
+            if (itemTask.State == ItemTaskState.Error)
+            {
+                _logger.LogError($"Something went wrong with task execution: {itemTask.Message}");
+                return null;
+            }
+
+            var itemName = $"VRAZonering";
+            var applianceMapItem = await _generalService.FindChildItemAsync(cropfieldItem.Code,
+               GEOTIFF_PROCESSED_ITEMTYPE, itemName,
+                               //i => i.Updated >= itemTask.Finished.GetValueOrDefault(DateTime.UtcNow) &&
+                               //     i.Name.ToLower().Contains(itemName.ToLower()));
+                               i =>
+                    i.Name.ToLower().Contains(itemName.ToLower()));
+            if (applianceMapItem == null)
+            {
+                _logger.LogError("Could not find the converted to count per area geotiff child item under cropfield");
+                return null;
+            }
+
+            return applianceMapItem;
+        }
+
+
+    }
 }