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

namespace ConfectioneryBusinessLogic
{
	public class MessageInfoLogic : IMessageInfoLogic
	{
		private readonly ILogger _logger;
		private readonly IMessageInfoStorage _messageInfoStorage;
		private readonly IClientStorage _clientStorage;
		public MessageInfoLogic(ILogger<MessageInfoLogic> logger, IMessageInfoStorage messageInfoStorage, IClientStorage clientStorage)
		{
			_logger = logger;
			_messageInfoStorage = messageInfoStorage;
			_clientStorage = clientStorage;
		}
		public List<MessageInfoViewModel>? ReadList(MessageInfoSearchModel? model)
		{
			_logger.LogInformation("ReadList. MessageId:{MessageId}.ClientId:{ClientId}", model?.MessageId, model?.ClientId);
			var list = model == null ? _messageInfoStorage.GetFullList() : _messageInfoStorage.GetFilteredList(model);
			if (list == null)
			{
				_logger.LogWarning("ReadList return null list");
				return null;
			}
			_logger.LogInformation("ReadList. Count:{Count}", list.Count);
			return list;
		}
		public bool Create(MessageInfoBindingModel model)
		{
			CheckModel(model);
			if (_messageInfoStorage.Insert(model) == null)
			{
				_logger.LogWarning("Insert operation failed");
				return false;
			}
			return true;
		}
		private void CheckModel(MessageInfoBindingModel model, bool withParams = true)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			if (!withParams)
			{
				return;
			}
			if (string.IsNullOrEmpty(model.MessageId))
			{
				throw new ArgumentNullException("Не указан id сообщения", nameof(model.MessageId));
			}
			if (string.IsNullOrEmpty(model.SenderName))
			{
				throw new ArgumentNullException("Не указана почта", nameof(model.SenderName));
			}
			if (string.IsNullOrEmpty(model.Subject))
			{
				throw new ArgumentNullException("Не указана тема", nameof(model.Subject));
			}
			if (string.IsNullOrEmpty(model.Body))
			{
				throw new ArgumentNullException("Не указан текст сообщения", nameof(model.Subject));
			}

			_logger.LogInformation("MessageInfo. MessageId:{MessageId}.SenderName:{SenderName}.Subject:{Subject}.Body:{Body}", model.MessageId, model.SenderName, model.Subject, model.Body);
			var element = _clientStorage.GetElement(new ClientSearchModel
			{
				Email = model.SenderName
			});
			if (element == null)
			{
				_logger.LogWarning("Не удалось найти клиента, отправившего письмо с адреса Email:{Email}", model.SenderName);
			}
			else
			{
				model.ClientId = element.Id;
			}
		}
	}
}