using Microsoft.Extensions.Logging;
using System.Text.RegularExpressions;
using VeterinaryContracts.BindingModels;
using VeterinaryContracts.BusinessLogicContracts;
using VeterinaryContracts.SearchModels;
using VeterinaryContracts.StorageContracts;
using VeterinaryContracts.ViewModels;

namespace VeterinaryBusinessLogic.BusinessLogic
{
	public class OwnerLogic : IOwnerLogic
	{
		private readonly ILogger _logger;
		private readonly IOwnerStorage _ownerStorage;
		public OwnerLogic(ILogger<OwnerLogic> logger, IOwnerStorage ownerStorage)
		{
			_logger = logger;
			_ownerStorage = ownerStorage;
		}
		public List<OwnerViewModel>? ReadList(OwnerSearchModel? model)
		{
			_logger.LogInformation("ReadList. OwnerFIO:{OwnerFIO}. Id:{ Id}", model?.OwnerFIO, model?.Id);
			var list = model == null ? _ownerStorage.GetFullList() : _ownerStorage.GetFilteredList(model);
			if (list == null)
			{
				_logger.LogWarning("ReadList return null list");
				return null;
			}
			_logger.LogInformation("ReadList. Count:{Count}", list.Count);
			return list;
		}
		public OwnerViewModel? ReadElement(OwnerSearchModel model)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			_logger.LogInformation("ReadElement. OwnerFIO:{OwnerFIO}.Id:{ Id}", model.OwnerFIO, model.Id);
			var element = _ownerStorage.GetElement(model);
			if (element == null)
			{
				_logger.LogWarning("ReadElement element not found");
				return null;
			}
			_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
			return element;
		}
		public bool Create(OwnerBindingModel model)
		{
			CheckModel(model);
			if (_ownerStorage.Insert(model) == null)
			{
				_logger.LogWarning("Insert operation failed");
				return false;
			}
			return true;
		}
		public bool Update(OwnerBindingModel model)
		{
			CheckModel(model);
			if (_ownerStorage.Update(model) == null)
			{
				_logger.LogWarning("Update operation failed");
				return false;
			}
			return true;
		}
		public bool Delete(OwnerBindingModel model)
		{
			CheckModel(model, false);
			_logger.LogInformation("Delete. Id:{Id}", model.Id);
			if (_ownerStorage.Delete(model) == null)
			{
				_logger.LogWarning("Delete operation failed");
				return false;
			}
			return true;
		}
		private void CheckModel(OwnerBindingModel model, bool withParams = true)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			if (!withParams)
			{
				return;
			}
			if (string.IsNullOrEmpty(model.OwnerFIO))
			{
				throw new ArgumentNullException("Нет ФИО клиента",
			   nameof(model.OwnerFIO));
			}
			if (string.IsNullOrEmpty(model.Login))
			{
				throw new ArgumentNullException("Нет Login клиента",
			   nameof(model.Login));
			}
			if (!Regex.IsMatch(model.Login, @"^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$"))
			{
				throw new ArgumentException("Некорретно введен email клиента", nameof(model.Login));
			}
			if (string.IsNullOrEmpty(model.Password))
			{
				throw new ArgumentNullException("Нет пароля клиента",
			   nameof(model.Password));
			}
			_logger.LogInformation("Owner. OwnerFIO:{OwnerFIO}." +
				"Login:{ Login}. Password:{ Password}. Id: { Id} ", model.OwnerFIO, model.Login, model.Password, model.Id);
			var element = _ownerStorage.GetElement(new OwnerSearchModel
			{
				Login = model.Login,
			});
			if (element != null && element.Id != model.Id)
			{
				throw new InvalidOperationException("Клиент с таким логином уже есть");
			}
		}
	}
}