using TypographyContracts.BindingModels;
using TypographyContracts.BusinessLogicsContracts;
using TypographyContracts.SearchModels;
using TypographyContracts.StoragesContracts;
using TypographyContracts.ViewModels;
using Microsoft.Extensions.Logging;
using System.Text.RegularExpressions;

namespace TypographyBusinessLogic.BusinessLogics
{
	public class ClientLogic : IClientLogic
	{
		private readonly ILogger _logger;
		private readonly IClientStorage _clientStorage;
		public ClientLogic(ILogger<ClientLogic> logger, IClientStorage clientStorage)
		{
			_logger = logger;
			_clientStorage = clientStorage;
		}
		public List<ClientViewModel>? ReadList(ClientSearchModel? model)
		{
			_logger.LogInformation("ReadList. Id: {Id}. ClientFIO: {ClientFIO}. Email: {Email}.",
				model?.Id, model?.ClientFIO, model?.Email);
			var list = model == null ? _clientStorage.GetFullList() : _clientStorage.GetFilteredList(model);
			if (list == null)
			{
				_logger.LogWarning("ReadList return null list");
				return null;
			}
			_logger.LogInformation("ReadList. Count: {Count}", list.Count);
			return list;
		}
		public ClientViewModel? ReadElement(ClientSearchModel model)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			_logger.LogInformation("ReadElement. Id: {Id}. ClientFIO: {ClientFIO}. Email: {Email}.",
				model?.Id, model?.ClientFIO, model?.Email);
			var element = _clientStorage.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(ClientBindingModel model)
		{
			CheckModel(model);
			if (_clientStorage.Insert(model) == null)
			{
				_logger.LogWarning("Insert operation failed");
				return false;
			}
			return true;
		}
		public bool Update(ClientBindingModel model)
		{
			CheckModel(model);
			if (_clientStorage.Update(model) == null)
			{
				_logger.LogWarning("Update operation failed");
				return false;
			}
			return true;
		}
		public bool Delete(ClientBindingModel model)
		{
			CheckModel(model, false);
			_logger.LogInformation("Delete. Id: {Id}", model.Id);
			if (_clientStorage.Delete(model) == null)
			{
				_logger.LogWarning("Delete operation failed");
				return false;
			}
			return true;
		}
		private void CheckModel(ClientBindingModel model, bool withParams = true)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			if (!withParams)
			{
				return;
			}
			if (string.IsNullOrEmpty(model.ClientFIO))
			{
				throw new ArgumentNullException("Нет ФИО клиента", nameof(model.ClientFIO));
			}
			if (string.IsNullOrEmpty(model.Email))
			{
				throw new ArgumentNullException("Нет электронной почты клиента", nameof(model.Email));
			}
			if (string.IsNullOrEmpty(model.Password))
			{
				throw new ArgumentNullException("Нет пароля клиента", nameof(model.Password));
			}
			if (!Regex.IsMatch(model.Email, @"^[-\w.]+@([A-Za-z0-9][-A-Za-z0-9]+\.)+[A-Za-z]{2,4}$"))
			{
				throw new ArgumentNullException("Введенное не является адресом электронной почты", nameof(model.Email));
			}
			if (model.Password.Length < 10 || model.Password.Length > 50 ||
				!Regex.IsMatch(model.Password, @"^((\w+\d+\W+)|(\w+\W+\d+)|(\d+\w+\W+)|(\d+\W+\w+)|(\W+\w+\d+)|(\W+\d+\w+))[\w\d\W]*$"))
			{
				throw new ArgumentNullException("Пароль не соответсвует требованиям безопасности", nameof(model.Password));
			}

			_logger.LogInformation("Client. Id: {Id}. ClientFIO: {ClientFIO}. Email: {Email}.",
				model?.Id, model?.ClientFIO, model?.Email);
			var element = _clientStorage.GetElement(new ClientSearchModel { Email = model.Email });
			if (element != null && element.Id != model.Id)
			{
				throw new InvalidOperationException("Клиент с таким логином уже есть");
			}
		}
	}
}