Finish DataHandler for DataObjectTemplates and Datasets.

Also added stuff to SzCli main program for testing

SzCore/SzDataHandler.cs

@@ -91,6 +91,8 @@ public class SzDataHandler
             DataObjectType = templateResult.Value.DataObjectType,
             Uuid = Guid.NewGuid()
         };
+        
+        
 
         return SzResult<SzDataset>.Success(newDataset);
     }
@@ -196,14 +198,53 @@ public class SzDataHandler
         return SzResult<SzTemplateField>.Success(newField);
     }
 
-    public SzResult<List<SzField>> CreateFields(ISzTemplate template) 
+    public SzResult<SzField> CreateField(string id, SzFieldType fieldType, bool isList = false, string? value = null)
     {
-        return SzResult<List<SzField>>.Failure("Not implemented");
+        if (string.IsNullOrEmpty(id))
+            return SzResult<SzField>.Failure("Could not create field, the id parameter was empty");
+        
+        var newField = new SzField()
+        {
+            Id = id,
+            FieldType = fieldType,
+            IsList = isList,
+            Value = value ?? ""
+        };
+
+        return SzResult<SzField>.Success(newField);
     }
 
-    public SzResult<SzDataObject> CreateDataObject() 
+    public SzResult<Dictionary<string, SzField>> CreateFieldsFromTemplate(ISzTemplate template)
     {
-        return SzResult<SzDataObject>.Failure("Not implemented");
+        var fields = new Dictionary<string, SzField>();
+        foreach (var tempField in template.TemplateFields.Values)
+        {
+            var newField = CreateField(tempField.Id, tempField.FieldType, tempField.IsList);
+            if (!newField.IsSuccess || newField.Value is null)
+                return SzResult<Dictionary<string, SzField>>.Failure($"Could not create field: {newField.Error}");
+            fields.Add(newField.Value.Id, newField.Value);
+        }
+
+        return SzResult<Dictionary<string, SzField>>.Success(fields);
+    }
+
+    public SzResult<SzDataObject> CreateDataObject(SzDataObjectTemplate template, string name, string? id = null)
+    {
+        if (string.IsNullOrEmpty(name))
+            return SzResult<SzDataObject>.Failure("Could not create object, name was empty");
+        
+        var dataObject = new SzDataObject()
+        {
+            Name = name,
+            Id = id ?? name.ToLower().Replace(" ", "-").Trim()
+        };
+
+        var createFieldsResult = CreateFieldsFromTemplate(template);
+        if (!createFieldsResult.IsSuccess || createFieldsResult.Value is null)
+            return SzResult<SzDataObject>.Failure($"Could not create data object's fields: {createFieldsResult.Error}");
+        dataObject.Fields = createFieldsResult.Value;
+        
+        return SzResult<SzDataObject>.Success(dataObject);
     }
     #endregion