using AircraftPlantContracts.BindingModels;
using AircraftPlantContracts.ViewModels;
using AircraftPlantDataModels.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace AircraftPlantFileImplement.Models
{
	/// <summary>
	/// Сущность "Письмо"
	/// </summary>
	public class Message : IMessageInfoModel
	{
		/// <summary>
		/// Идентификатор
		/// </summary>
		public string MessageId { get; set; } = string.Empty;

		/// <summary>
		/// Идентификатор клиента
		/// </summary>
		public int? ClientId { get; set; }

		/// <summary>
		/// Адрес электронной почты отправителя
		/// </summary>
		public string SenderName { get; set; } = string.Empty;

		/// <summary>
		/// Дата получения письма
		/// </summary>
		public DateTime DateDelivery { get; set; }

		/// <summary>
		/// Заголовок письма
		/// </summary>
		public string Subject { get; set; } = string.Empty;

		/// <summary>
		/// Тело письма
		/// </summary>
		public string Body { get; set; } = string.Empty;

		/// <summary>
		/// Создание модели письма
		/// </summary>
		/// <param name="model"></param>
		/// <returns></returns>
		public static Message? Create(MessageInfoBindingModel model)
		{
			if (model == null)
			{
				return null;
			}

			return new()
			{
				MessageId = model.MessageId,
				ClientId = model.ClientId,
				SenderName = model.SenderName,
				DateDelivery = model.DateDelivery,
				Subject = model.Subject,
				Body = model.Body,
			};
		}

		/// <summary>
		/// Создание модели письма из данных файла
		/// </summary>
		/// <param name="element"></param>
		/// <returns></returns>
		public static Message? Create(XElement element)
		{
			if (element == null)
			{
				return null;
			}

			return new()
			{
				MessageId = element.Attribute("MessageId")!.Value,
				ClientId = Convert.ToInt32(element.Attribute("ClientId")!.Value),
				SenderName = element.Attribute("SenderName")!.Value,
				DateDelivery = Convert.ToDateTime(element.Attribute("DateDelivery")!.Value),
				Subject = element.Attribute("Subject")!.Value,
				Body = element.Attribute("Body")!.Value
			};
		}

		/// <summary>
		/// Получение модели письма
		/// </summary>
		public MessageInfoViewModel GetViewModel => new()
		{
			MessageId = MessageId,
			ClientId = ClientId,
			SenderName = SenderName,
			DateDelivery = DateDelivery,
			Subject = Subject,
			Body = Body
		};

		/// <summary>
		/// Запись данных о модели письма в файл
		/// </summary>
		public XElement GetXElement => new("MessageInfo",
			new XAttribute("MessageId", MessageId),
			new XAttribute("ClientId", ClientId),
			new XAttribute("SenderName", SenderName),
			new XAttribute("DateDelivery", DateDelivery),
			new XAttribute("Subject", Subject),
			new XAttribute("Body", Body));
	}
}