CourseWork_Bank/Bank/BankDatabaseImplement/Implements/ClientImplements/ClientStorage.cs

using BankContracts.BindingModels.Client;
using BankContracts.SearchModels.Client;
using BankContracts.StoragesModels.Client;
using BankContracts.ViewModels.Client.ViewModels;
using BankDatabaseImplement.Models.ClientModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BankDatabaseImplement.Implements.ClientImplements
{
	// Реализация интерфейса хранилища для сущности "Клиент"
	public class ClientStorage : IClientStorage
    {
        public ClientViewModel? GetElement(ClientSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Email) && string.IsNullOrEmpty(model.Password) && !model.Id.HasValue)
            {
                return null;
            }

            using var context = new BankDatabase();

            // Для поиска почты для отправки файла
            if (model.Id.HasValue && string.IsNullOrEmpty(model.Password))
            {
                return context.Clients.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
            }

            return context.Clients.FirstOrDefault(x => (!string.IsNullOrEmpty(model.Email) && x.Email == model.Email 
            && !string.IsNullOrEmpty(model.Password) && x.Password == model.Password) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
        }

        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Name))
            {
                return new();
            }

            using var context = new BankDatabase();
            return context.Clients.Where(x => x.Name.Contains(model.Name)).Select(x => x.GetViewModel).ToList();
        }

        public List<ClientViewModel> GetFullList()
        {
            using var context = new BankDatabase();

            return context.Clients.Select(x => x.GetViewModel).ToList();
        }

        public ClientViewModel? Insert(ClientBindingModel model)
        {
            var newComponent = Client.Create(model);
            
            if (newComponent == null)
            {
                return null;
            }

            using var context = new BankDatabase();
            
            context.Clients.Add(newComponent);
            context.SaveChanges();
            return newComponent.GetViewModel;
        }

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

		public ClientViewModel? Delete(ClientBindingModel model)
		{
			using var context = new BankDatabase();
			
            var element = context.Clients.FirstOrDefault(rec => rec.Id == model.Id);
			
            if (element != null)
			{
				context.Clients.Remove(element);
				context.SaveChanges();
				return element.GetViewModel;
			}

			return null;
		}
	}
}