BeWoPlaner/BeWo/Core/Commands/CommandFactory.cs

using BS.Shared;
using DevExpress.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using static DevExpress.Mvvm.Native.Either;

namespace BeWo.Core.Commands
{
	public static class CommandFactory
	{
		public static DelegateCommand GetAiViewCommand(Action openView, UserRightType userRightType, Func<bool> additionalCheckup = null)
		{
			bool canExecute() =>
				(BeWoApp.AppSettings?.ModuleAiEnabled ?? false) &&
				BeWoApp.HasLoggedOnUserRight(userRightType) &&
				(additionalCheckup is null || additionalCheckup());

			return GetTestClientCommand(openView, () => CheckupSafe(canExecute), null);
		}

		public static DelegateCommand GetTestClientCommand(Action action, Func<bool> canExecute = null, bool? useCommandManager = null)
		{
			bool canExecute2() => 
				CheckupTestVersion() &&
				(canExecute is null || canExecute());

			return new DelegateCommand(action, () => CheckupSafe(canExecute2), useCommandManager);
		}

		private static bool CheckupSafe(Func<bool> predicate)
		{
			try
			{
				return predicate();
			}
			catch (Exception ex)
			{
				return false;
			}
		}

		private static bool CheckupTestVersion()
		{
			var version = BeWoApp.Version.Split(' ');
			var test_string = version[version.Length - 1].ToLower();
			return test_string == "test";
		}
	}
}