PIbd-22_Rogashova_E.A._SUBD/BookShop/Implements/ClientStorage.cs

using BookShopContracts.BindingModels;
using BookShopContracts.SearchModels;
using BookShopContracts.StoragesContracts;
using BookShopContracts.ViewModels;
using BookShopDataBaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BookShopDataBaseImplement.Implements
{
    public class ClientStorage : IClientStorage
    {
        public ClientViewModel? Delete(ClientBindingModel model)
        {
            using var context = new BookShopDatabase();
            var element = context.Clients.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Clients.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }

        public ClientViewModel? GetElement(ClientSearchModel model)
        {
            using var context = new BookShopDatabase();
            if (model.Id.HasValue)
                return context.Clients.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
            if (!string.IsNullOrEmpty(model.Email))
                return context.Clients.FirstOrDefault(x => x.Email.Equals(model.Email))?.GetViewModel;
            return null;
        }

        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
        {
            if (string.IsNullOrEmpty(model.ClientSurname))
            {
                return new();
            }
            using var context = new BookShopDatabase();
            return context.Clients.Where(x => x.ClientSurname.Contains(model.ClientSurname)).Select(x => x.GetViewModel).ToList();
        }

        public List<ClientViewModel> GetFullList()
        {
            using var context = new BookShopDatabase();
            return context.Clients.Select(x => x.GetViewModel).ToList();
        }

        public ClientViewModel? Insert(ClientBindingModel model)
        {
            var newClient = Client.Create(model);
            if (newClient == null)
            {
                return null;
            }
            using var context = new BookShopDatabase();
            context.Clients.Add(newClient);
            context.SaveChanges();
            return newClient.GetViewModel;
        }

        public ClientViewModel? Update(ClientBindingModel model)
        {
            using var context = new BookShopDatabase();
            var client = context.Clients.FirstOrDefault(x => x.Id == model.Id);
            if (client == null)
            {
                return null;
            }
            client.Update(model);
            context.SaveChanges();
            return client.GetViewModel;
        }
    }
}