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 "Компонент"
    /// </summary>
    public class Component : IComponentModel
    {
        /// <summary>
        /// Идентификатор
        /// </summary>
        public int Id { get; private set; }

        /// <summary>
        /// Название компонента
        /// </summary>
        public string ComponentName { get; private set; } = string.Empty;

        /// <summary>
        /// Стоимость компонента
        /// </summary>
        public double Cost { get; set; }

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

            return new Component()
            {
                Id = model.Id,
                ComponentName = model.ComponentName,
                Cost = model.Cost
            };
        }

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

            return new Component()
            {
                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
                ComponentName = element.Element("ComponentName")!.Value,
                Cost = Convert.ToDouble(element.Element("Cost")!.Value)
            };
        }

        /// <summary>
        /// Изменение модели компонента
        /// </summary>
        /// <param name="model"></param>
        public void Update(ComponentBindingModel? model)
        {
            if (model == null)
            {
                return;
            }

            ComponentName = model.ComponentName;
            Cost = model.Cost;
        }

        /// <summary>
        /// Получение модели компонента
        /// </summary>
        public ComponentViewModel GetViewModel => new()
        {
            Id = Id,
            ComponentName = ComponentName,
            Cost = Cost
        };

        /// <summary>
        /// Запись данных о модели компонента в файл
        /// </summary>
        public XElement GetXElement => new("Component",
            new XAttribute("Id", Id),
            new XElement("ComponentName", ComponentName),
            new XElement("Cost", Cost.ToString()));
    }
}