using PortalAccountsContracts.BindingModels;
using PortalAccountsContracts.BusinessLogicsContracts;
using PortalAccountsContracts.SearchModels;
using PortalAccountsContracts.StoragesContracts;
using PortalAccountsContracts.ViewModels;

namespace PortalAccountsBusinessLogic.BusinessLogics
{
    public class AccountLogic : IAccountLogic
    {
        private readonly IAccountStorage _accountStorage;

        public AccountLogic(IAccountStorage AccountStorage)
        {
            _accountStorage = AccountStorage;
        }

        public List<AccountViewModel>? ReadList(AccountSearchModel? model)
        {
            return model == null ? _accountStorage.GetFullList() : _accountStorage.GetFilteredList(model);
        }

        public AccountViewModel? ReadElement(AccountSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            return _accountStorage.GetElement(model);
        }

        public bool Create(AccountBindingModel model)
        {
            CheckModel(model);
            return _accountStorage.Insert(model) != null;
        }

        public bool Update(AccountBindingModel model)
        {
            CheckModel(model);
            return _accountStorage.Update(model) != null;
        }

        public bool Delete(AccountBindingModel model)
        {
            CheckModel(model, false);
            return _accountStorage.Delete(model) != null;
        }

        private void CheckModel(AccountBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.Login))
            {
                throw new ArgumentNullException("Нет логина у аккаунта", nameof(model.Login));
            }
            if (model.RoleId <= 0)
            {
                throw new ArgumentNullException("Некорректный идентификатор роли", nameof(model.RoleId));
            }
            var element = _accountStorage.GetElement(new AccountSearchModel
            {
                Login = model.Login
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Аккаунт с таким логином уже есть");
            }
        }
    }
}