using ModuleTools.BusinessLogics;
using ModuleTools.Enums;
using SecurityBusinessLogic.BindingModels;
using SecurityBusinessLogic.Interfaces;
using SecurityBusinessLogic.ViewModels;
using System;
using System.Linq;

namespace SecurityBusinessLogic.BusinessLogics
{
	/// <summary>
	/// Логика работы с пользователями
	/// </summary>
	public class UserBusinessLogic : GenericBusinessLogic<UserGetBindingModel, UserSetBindingModel, UserListViewModel, UserViewModel>
	{
		public UserBusinessLogic(IUserService service) : base(service, "Пользователи", AccessOperation.Пользователи) { }

		public UserViewModel GetOrCreateUser(UserGetBindingModel model, string password)
        {
			Errors.Clear();
			try
			{
				model.HaveRight = !NoAccess(model, AccessType.View);
				if (model.HaveRight && !_allowSimpleView)
				{
					throw new MethodAccessException("Нет прав на получение списка");
				}
				var result = Service.Read(model);
				if (result.IsSucceeded)
				{
					return result.Result as UserViewModel;
				}

				if (result.Errors.First().Message == "Элемент удален")
                {
					result = Service.Restore(model);
				}
				else if (result.Errors.First().Message == "Элемент не найден")
				{
					result = Service.Create(new UserSetBindingModel
					{
						Login = model.Login,
						Password = password
					});
				}
				if (!result.IsSucceeded)
				{
					Errors.AddRange(result.Errors);
					return null;
				}
				return result.Result as UserViewModel;
			}
			catch (Exception ex)
			{
				Errors.Add(("Ошибка получения", ex.Message));
			}
			return null;
		}
	}
}