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

namespace ClientBusinessLogic.BusinessLogics
{
    public class StatusLogic : IStatusLogic
    {
        private readonly IStatusStorage _statusStorage;

        public StatusLogic(IStatusStorage statusStorage)
        {
            _statusStorage = statusStorage;
        }

        public bool Create(StatusBindingModel model)
        {
            CheckModel(model);
            if (_statusStorage.Insert(model) == null)
            {
                return false;
            }
            return true;
        }

        public bool Delete(StatusBindingModel model)
        {
            CheckModel(model, false);
            if (_statusStorage.Delete(model) == null)
            {
                return false;
            }
            return true;
        }

        public StatusViewModel? ReadElement(StatusSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            var element = _statusStorage.GetElement(model);
            if (element == null)
            {
                return null;
            }
            return element;
        }

        public List<StatusViewModel>? ReadList()
        {
            var list = _statusStorage.GetFullList();
            if (list == null)
            {
                return null;
            }
            return list;
        }

        public bool Update(StatusBindingModel model)
        {
            CheckModel(model);
            if (_statusStorage.Update(model) == null)
            {
                return false;
            }
            return true;
        }

        private void CheckModel(StatusBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.StatusName))
            {
                throw new ArgumentNullException("Status's name is missing!", nameof(model.StatusName));
            }
        }
    }
}