using Contracts.BindingModels;
using Contracts.SearchModels;
using Contracts.StorageContracts;
using Contracts.ViewModels;
using DatabaseImplement.Models;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DatabaseImplement.Implements
{
	public class AccountStorage : IAccountStorage
	{
		public AccountViewModel? Delete(AccountBindingModel model)
		{
			using var context = new AccountsDatabase();
			var element = context.Accounts
				.Include(x => x.ResidenceCity)
				.FirstOrDefault(rec => rec.Id == model.Id);
			if (element != null)
			{
				context.Accounts.Remove(element);
				context.SaveChanges();
				return element.GetViewModel;
			}
			return null;
		}

		public AccountViewModel? GetElement(AccountSearchModel model)
		{
			if (!model.Id.HasValue)
			{
				return null;
			}

			using var context = new AccountsDatabase();
			return context.Accounts
			.Include(x => x.ResidenceCity)
			.FirstOrDefault(x => x.Id == model.Id)
			?.GetViewModel;
		}

		public List<AccountViewModel> GetFilteredList(AccountSearchModel model)
		{
			if (!model.Id.HasValue)
			{
				return new();
			}

			using var context = new AccountsDatabase();
			return context.Accounts
			.Include(x => x.ResidenceCity)
			.Where(x => x.Id == model.Id)
			.Select(x => x.GetViewModel)
			.ToList();
		}

		public List<AccountViewModel> GetFullList()
		{
			using var context = new AccountsDatabase();
			return context.Accounts
			.Include(x => x.ResidenceCity)
			.Select(x => x.GetViewModel)
			.ToList();
		}

		public AccountViewModel? Insert(AccountBindingModel model)
		{
			using var context = new AccountsDatabase();
			var newAccount = Accounts.Create(context, model);
			if (newAccount == null)
			{
				return null;
			}
			context.Accounts.Add(newAccount);
			context.SaveChanges();
			return newAccount.GetViewModel;
		}

		public AccountViewModel? Update(AccountBindingModel model)
		{
			using var context = new AccountsDatabase();
			var Account = context.Accounts.FirstOrDefault(x => x.Id == model.Id);
			if (Account == null)
			{
				return null;
			}
			Account.Update(model, context);
			context.SaveChanges();
			return Account.GetViewModel;
		}
	}
}