using CarServiceContracts.BindingModels;
using CarServiceContracts.SearchModels;
using CarServiceContracts.StorageContracts;
using CarServiceContracts.ViewModels;
using CarServiceDatabase.Models;

namespace CarServiceDatabase.Implements
{
	public class CustomerStorage : ICustomerStorage
	{
		public List<CustomerViewModel> GetFullList()
		{
			using var context = new CarServiceDbContext();
			return context.Customers
				.Select(x => x.GetViewModel)
				.ToList();
		}
		public List<CustomerViewModel> GetFilteredList(CustomerSearchModel model)
		{
			using var context = new CarServiceDbContext();
			return context.Customers
				.Where(x => x.Id == model.Id)
				.Select(x => x.GetViewModel)
				.ToList();
		}
		public CustomerViewModel? GetElement(CustomerSearchModel model)
		{
			if (model == null)
			{
				return null;
			}
			using var context = new CarServiceDbContext();
			if (model.Id.HasValue)//ищем по Id
			{
				return context.Customers.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
			}
			//другие варианты поиска не реализуются (заглушка для роли клиента)
			return null;
		}
		public CustomerViewModel? Insert(CustomerBindingModel model)
		{
			using var context = new CarServiceDbContext();
			var newCustomer = Customer.Create(model);
			if (newCustomer != null)
			{
				context.Customers.Add(newCustomer);
				context.SaveChanges();
				return newCustomer.GetViewModel;
			}
			return null;
		}
		public CustomerViewModel? Update(CustomerBindingModel model)
		{
			using var context = new CarServiceDbContext();
			var customer = context.Customers
				.FirstOrDefault(x => x.Id == model.Id);
			if (customer == null)
			{
				return null;
			}
			customer.Update(model);
			context.SaveChanges();
			return customer.GetViewModel;
		}
		public CustomerViewModel? Delete(CustomerBindingModel model)
		{
			using var context = new CarServiceDbContext();
			var customer = context.Customers
				.FirstOrDefault(x => x.Id == model.Id);
			if (customer == null)
			{
				return null;
			}
			context.Customers.Remove(customer);
			context.SaveChanges();
			return customer.GetViewModel;
		}
	}
}