using Microsoft.IdentityModel.Tokens;
using SushiBarContracts.BindingModel;
using SushiBarContracts.SearchModel;
using SushiBarContracts.StoragesContracts;
using SushiBarContracts.ViewModels;
using SushiBarDatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SushiBarDatabaseImplement.Implements
{
    public class ClientStorage : IClientStorage
    {
        public ClientViewModel? Insert(ClientBindingModel model)
        {
            using var context = new SushiBarDatabase();
            var newClient = Client.Create(model);
            if (newClient == null) { return null; }
            context.Clients.Add(newClient);
            context.SaveChanges();
            return newClient.GetViewModel;
        }

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

        public ClientViewModel? Delete(ClientBindingModel model)
        {
            using var context = new SushiBarDatabase();
            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)
        {
            return GetFilteredList(model).FirstOrDefault();
        }

        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
        {
            using var context = new SushiBarDatabase();
            var clients = context.Clients.Select(x => x.GetViewModel).ToList();
            if (model.Id.HasValue)
            {
                clients = clients.Where(x => x.Id == model.Id.Value).ToList();
            }
            if (!model.Email.IsNullOrEmpty())
            {
                clients = clients.Where(x => x.Email == model.Email).ToList();
            }
            if (!model.Password.IsNullOrEmpty())
            {
                clients = clients.Where(x => x.Password == model.Password).ToList();
            }
            if (!model.ClientFIO.IsNullOrEmpty())
            {
                clients = clients.Where(x => x.ClientFIO == model.ClientFIO).ToList();
            }
            return clients;
        }

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