using Microsoft.Extensions.Logging;
using SewingDressesContracts.BindingModels;
using SewingDressesContracts.BusinessLogicsContracts;
using SewingDressesContracts.SearchModels;
using SewingDressesContracts.StoragesContracts;
using SewingDressesContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SewingDressesBusinessLogic.BusinessLogic
{
	public class ImplementLogic : IImplementLogic
	{
		private readonly ILogger _logger;
		private readonly IImplementStorage _storage;
		public ImplementLogic(ILogger<ImplementLogic> logger, IImplementStorage storage)
		{
			_logger = logger;
			_storage = storage;
		}
		public ImplementViewModel? ReadElement(ImplementSearchModel? model)
		{
			if (model == null)
				throw new ArgumentNullException(nameof(model));
			_logger.LogInformation("ReadElement. FIO:{ImplementFIO}. Id:{Id}", model.ImplementFIO, model.Id);
			var element = _storage.GetElement(model);
			if (element == null)
			{
				_logger.LogWarning("ReadElement element not found");
				return null;
			}
			_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
			return element;
		}
		public List<ImplementViewModel>? ReadList(ImplementSearchModel? model)
		{
			var list = model == null ? _storage.GetFullList() : _storage.GetFilteredList(model);
			if (list == null)
			{
				_logger.LogWarning("ReadList return null list");
				return null;
			}
			_logger.LogInformation("ReadList. Count:{Count}", list.Count);
			return list;
		}
		private void CheckModel(ImplementBindingModel? model, bool withParams = true)
		{
			if (model == null)
				throw new ArgumentNullException(nameof(model));
			if (!withParams)
				return;
			if (string.IsNullOrEmpty(model.ImplementFIO))
				throw new ArgumentException("Нет ФИО исполнителя", nameof(model.ImplementFIO));
			if (string.IsNullOrEmpty(model.Password))
			{
				throw new ArgumentNullException("Нет пароля клиента", nameof(model.Password));
			}
			if (model.WorkExperience < 0)
			{
				throw new ArgumentNullException("Стаж меньше 0", nameof(model.WorkExperience));
			}
			if (model.Qualification < 0)
			{
				throw new ArgumentException("Квалификация меньше 0", nameof(model.Qualification));
			}
			_logger.LogInformation("Implementer. ImplementerFIO:{ImplementerFIO}. Password:{Password}. WorkExperience:{WorkExperience}. Qualification:{Qualification}. Id: {Id} ", model.ImplementFIO, model.Password, model.WorkExperience, model.Qualification, model.Id);
			var element = _storage.GetElement(new ImplementSearchModel { ImplementFIO = model.ImplementFIO });
			if (element != null && element.Id != model.Id)
			{
				throw new InvalidOperationException("Исполнитель с этим именем уже существует");
			}
		}
		public bool Create(ImplementBindingModel model)
		{
			CheckModel(model);
			_logger.LogInformation("Insert Imlement");
			if (_storage.Insert(model) == null)
			{
				_logger.LogWarning("Insert Error");
				return false;
			}
			return true;
		}
		public bool Delete(ImplementBindingModel model)
		{
			CheckModel(model, false);
			_logger.LogInformation("Delete Implement Id:{Id}", model.Id);
			if (_storage.Delete(model) == null)
			{
				_logger.LogWarning("Delete Error");
				return false;
			}
			return true;
		}
		public bool Update(ImplementBindingModel model)
		{
			CheckModel(model);
			_logger.LogInformation("Update Implement Id:{Id}", model.Id);
			if (_storage.Update(model) == null)
			{
				_logger.LogWarning("Update Error");
				return false;
			}
			return true;
		}
	}
}