using ClientsContracts.BindingModels;
using ClientsContracts.BusinessLogicContracts;
using ClientsContracts.StorageContracts;
using ClientsContracts.ViewModels;

namespace ClientBusinessLogic.BusinessLogics
{
	public class ClientLogic : IClientLogic
	{
		private readonly IClientStorage _clientStorage;
		public ClientLogic(IClientStorage clientStorage)
		{
			_clientStorage = clientStorage;
		}
		public void CreateOrUpdate(ClientBindingModel model)
		{
			var element = _clientStorage.GetElement(
			   new ClientBindingModel
			   {
				   Reviews = model.Reviews,
				   Name = model.Name,
				   Status = model.Status,
				   Amount = model.Amount
			   });
			if (element != null && element.Id != model.Id)
			{
				throw new Exception("Клиент с таким именем уже существует");
			}
			if (model.Id.HasValue)
			{
				_clientStorage.Update(model);
			}
			else
			{
				_clientStorage.Insert(model);
			}
		}

		public void Delete(ClientBindingModel model)
		{
			var element = _clientStorage.GetElement(new ClientBindingModel { Id = model.Id });
			if (element == null)
			{
				throw new Exception("Клиент не найден");
			}
			_clientStorage.Delete(model);
		}

		public List<ClientViewModel> Read(ClientBindingModel model)
		{
			if (model == null)
			{
				return _clientStorage.GetFullList();
			}
			if (model.Id.HasValue)
			{
				return new List<ClientViewModel> { _clientStorage.GetElement(model) };
			}
			return _clientStorage.GetFilteredList(model);
		}
	}
}