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

namespace AircraftPlantBusinessLogic.BusinessLogics
{
	/// <summary>
	/// Реализация интерфейса бизнес-логики для писем
	/// </summary>
	public class MessageInfoLogic : IMessageInfoLogic
	{
		/// <summary>
		/// Логгер
		/// </summary>
		private readonly ILogger _logger;

		/// <summary>
		/// Взаимодействие с хранилищем писем
		/// </summary>
		private readonly IMessageInfoStorage _messageStorage;

		/// <summary>
		/// Конструктор
		/// </summary>
		/// <param name="logger"></param>
		/// <param name="messageStorage"></param>
		public MessageInfoLogic(ILogger<MessageInfoLogic> logger, IMessageInfoStorage messageStorage)
		{
			_logger = logger;
			_messageStorage = messageStorage;
		}

		/// <summary>
		/// Получение списка
		/// </summary>
		/// <param name="model"></param>
		/// <returns></returns>
		public List<MessageInfoViewModel>? ReadList(MessageInfoSearchModel? model)
		{
			_logger.LogInformation("ReadList. MessageId: {MessageId}. ClientId: {ClientId}", model?.MessageId, model?.ClientId);
			
			var list = model == null ? _messageStorage.GetFullList() : _messageStorage.GetFilteredList(model);
			if (list == null)
			{
				_logger.LogWarning("ReadList return null list");
				return null;
			}

			_logger.LogInformation("ReadList. Count: {Count}", list.Count);
			return list;
		}

		/// <summary>
		/// Получение отдельной записи
		/// </summary>
		/// <param name="model"></param>
		/// <returns></returns>
		/// <exception cref="ArgumentNullException"></exception>
		public MessageInfoViewModel? ReadElement(MessageInfoSearchModel model)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}

			_logger.LogInformation("ReadElement. MessageId:{Id}", model.MessageId);

			var element = _messageStorage.GetElement(model);
			if (element == null)
			{
				_logger.LogWarning("ReadElement element not found");
				return null;
			}

			_logger.LogInformation("ReadElement find. MessageId:{Id}", element.MessageId);
			return element;
		}

		/// <summary>
		/// Создание записи
		/// </summary>
		/// <param name="model"></param>
		/// <returns></returns>
		public bool Create(MessageInfoBindingModel model)
		{
			if (model == null)
			{
				return false;
			}

			if (_messageStorage.Insert(model) == null)
			{
				_logger.LogWarning("Insert operation failed");
				return false;
			}
			return true;
		}
	}
}