Publish Reusable Workflow in Nintex Workflow

NWPublishReusableWorkflow.cs

                /// <summary>
		/// Publish Reusable Workflow
		/// </summary>
		/// <param name="mapping"></param>
		public void PublishReusableWorkflow(NWFMappingEntry mapping)
		{
			SPContentType ct = web.ContentTypes[mapping.BindingName];
			string workflowName = mapping.WorkflowName;
			string pathToNWF = Path.Combine(properties.Definition.RootDirectory, mapping.WorkflowFileName);
			byte[] workflowData = File.ReadAllBytes(pathToNWF);
			string workflowFile = Utility.ConvertByteArrayToString(workflowData);


			while ((int)workflowFile[0] != (int)char.ConvertFromUtf32(60)[0])
				workflowFile = workflowFile.Remove(0, 1);


			ExportedWorkflowWithListMetdata workflowWithListMetdata = ExportedWorkflowWithListMetdata.Deserialize(workflowFile);
			string xmlMessage = workflowWithListMetdata.ExportedWorkflowSeralized;
			SPListCollection lists = web.Lists;
			Dictionary<string, Guid> dictionary = new Dictionary<string, Guid>(lists.Count);
			foreach (SPList spList in lists)
			{
				if (!dictionary.ContainsKey(spList.Title.ToUpper()))
					dictionary.Add(spList.Title.ToUpper(), spList.ID);
			}
			foreach (var listReference in workflowWithListMetdata.ListReferences)
			{
				string key = listReference.ListName.ToUpper();
				if (dictionary.ContainsKey(key) && !dictionary.ContainsValue(listReference.ListId))
					xmlMessage = xmlMessage.Replace(Utility.FormatGuid(listReference.ListId), Utility.FormatGuid(dictionary[key]));
			}
			var exportedWorkflow = WorkflowPart.Deserialize<ExportedWorkflow>(xmlMessage);
			foreach (var config in exportedWorkflow.Configurations.ActionConfigs)
				WorkflowRenderer.ProcessActionConfig(config);


			Guid listId = Guid.Empty;
			bool validateWorkflow = true;
			Publish publish = new Publish(web);
			publish.PublishAWorkflow(workflowName, exportedWorkflow.Configurations, listId, web, (ImportContext)null, validateWorkflow, ct.Id, string.Empty);
		}