PIbd-21_KozyrevSS_SewingDresses_Base/SewingDresses/SewingDressesFileImplement/Implements/OrderStorage.cs

using SewingDressesContracts.BindingModels;
using SewingDressesContracts.SearchModels;
using SewingDressesContracts.StoragesContracts;
using SewingDressesContracts.ViewModels;
using SewingDressesDataModels.Models;
using SewingDressesFileImplement.Models;


namespace SewingDressesFileImplement.Implements
{
    public class OrderStorage : IOrderStorage
    {
        private readonly DataFileSingleton source;
        public OrderStorage()
        {
            source = DataFileSingleton.GetInstance();
        }
        public List<OrderViewModel> GetFullList()
        {
            return source.Orders.Select(x => AcessDressesStorage(x.GetViewModel)).ToList();
        }
        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
        {
            return source.Orders.Where(x => x.Id == model.Id)
                .Select(x => AcessDressesStorage( x.GetViewModel))
                .ToList();
        }
        public OrderViewModel? GetElement(OrderSearchModel model)
        {
            if (!model.Id.HasValue)
            {
                return null;
            }
            return source.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
        }
        public OrderViewModel? Insert(OrderBindingModel model)
        {
            model.Id = source.Orders.Count > 0 ? source.Orders.Max(x => x.Id) + 1 : 1;
            var newOrder = Order.Create(model);
            if (newOrder == null)
            {
                return null;
            }
            source.Orders.Add(newOrder);
            source.SaveOrders();
            return newOrder.GetViewModel;
        }
        public OrderViewModel? Update(OrderBindingModel model)
        {
            var component = source.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (component == null)
            {
                return null;
            }
            component.Update(model);
            source.SaveOrders();
            return component.GetViewModel;
        }
        public OrderViewModel? Delete(OrderBindingModel model)
        {
            var component = source.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (component == null)
            {
                return null;
            }
            source.Orders.Remove(component);
            source.SaveOrders();
            return component.GetViewModel;
        }
        public OrderViewModel AcessDressesStorage(OrderViewModel model)
        {
            var component = source.Dresses.FirstOrDefault(x => x.Id == model.DressId);
            model.DressName = component.DressName;
            return model;
        }
    }
}