using Microsoft.Extensions.Logging;
using ServiceStationContracts.BindingModels;
using ServiceStationContracts.BusinessLogicContracts;
using ServiceStationContracts.SearchModels;
using ServiceStationContracts.ViewModels;
using ServiceStationsContracts.StorageContracts;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;

namespace ServiceSourceBusinessLogic.BusinessLogic {
	public class ClientLogic : IClientLogic {

		private readonly ILogger _logger;
		private readonly IClientStorage _storage;

		public ClientLogic(ILogger<IClientLogic> logger, IClientStorage storage) {
			_logger = logger;
			_storage = storage;
		}

		public bool Create(ClientBindingModel model) {
			CheckModel(model);
			if (_storage.Insert(model) == null) {
				_logger.LogWarning("Insert operation failed");
				return false;
			}
			return true;
		}

		public bool Delete(ClientBindingModel model) {
			CheckModel(model, false);
			_logger.LogInformation($"Delete.Id:{model.Id}");
			if (_storage.Delete(model) == null) {
				_logger.LogWarning("Delete operation failed");
				return false;
			}
			return true;
		}

		public bool Update(ClientBindingModel model) {
			CheckModel(model);
			if (_storage.Update(model) == null) {
				_logger.LogWarning("Update operation failed");
				return false;
			}
			return true;
		}

		public ClientViewModel? ReadElement(ClientSearchModel model) {
			if (model == null) {
				throw new ArgumentNullException(nameof(model));
			}
			_logger.LogInformation($"ReadElement.Id:{model.Id}.login:{model.Login}");
			var element = _storage.GetElement(model);
			if (element == null) {
				_logger.LogWarning("ReadElement.Element not fount");
				return null;
			}
			_logger.LogInformation($"ReadElement.find.Id:{element.Id}");
			return element;
		}

		public List<ClientViewModel>? ReadList() {
			var list = _storage.GetFullList();
			if (list == null) {
				_logger.LogWarning("ReadList return null list");
				return null;
			}
			_logger.LogInformation($"ReadList.Count:{list.Count}");
			return list;
		}

		private void CheckModel(ClientBindingModel model, bool withParams = true) {
            if (string.IsNullOrEmpty((model.Id).ToString())) {
                throw new ArgumentNullException("Нет Id клиента", nameof(model.Id));
            }

            if (!withParams) {
				return;
			}

			if (string.IsNullOrEmpty(model.FIO)) {
				throw new ArgumentNullException("Нет ФИО клиента", nameof(model.FIO));
			}
			if (string.IsNullOrEmpty(model.Password)) {
				throw new ArgumentNullException("Нет пароля пользователя", nameof(model.Password));
			}
			if (string.IsNullOrEmpty(model.Login)) {
				throw new ArgumentNullException("Нет номера телефона пользователя", nameof(model.Login));
			}
			_logger.LogInformation($"Client.Id:{model.Id}.FIO:{model.FIO}.Password:{model.Password}.Login:{model.Login}");

			var element = _storage.GetElement(new ClientSearchModel { Login = model.Login});
			if (element != null && element.Id != model.Id) {
				throw new InvalidOperationException("Такой логин пользователя уже есть");
			}
		}
	}
}