zonering most basic flow

FarmmapsZonering/Services/ZoneringService.cs

@@ -1,5 +1,12 @@
+using System;
+using System.Threading.Tasks;
+using FarmmapsApi.Models;
 using FarmmapsApi.Services;
+using FarmmapsHaulmkilling.Models;
+using FarmmapsZonering.Models;
 using Microsoft.Extensions.Logging;
+using static FarmmapsApi.Extensions;
+using static FarmmapsApiSamples.Constants;
 
 namespace FarmmapsZonering.Services
 {
@@ -16,5 +23,40 @@ namespace FarmmapsZonering.Services
             _farmmapsApiService = farmmapsApiService;
             _generalService = generalService;
         }
+
+        public async Task<Item> CreateApplicationMapAsync(Item cropfieldItem, string formula, Output output, params InputParameter[] inputItemCodes)
+        {
+            var zoneringTaskRequest = new TaskRequest() {TaskType = VRAZONERING_TASK};
+            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($"Waiting on calculation of application map; Status: {itemTaskStatus.State}");
+                if (itemTaskStatus.IsFinished)
+                    tokenSource.Cancel();
+            });
+
+            var itemTask = await _farmmapsApiService.GetTaskStatusAsync(cropfieldItem.Code, taskCode);
+            if (itemTask.State == ItemTaskState.Error)
+            {
+                _logger.LogError($"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()));
+
+            if (applianceMapItem == null)
+            {
+                _logger.LogError("Could not find the VRAZonering geotiff child item under cropfield");
+                return null;
+            }
+
+            return applianceMapItem;
+        }
     }
 }