using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata;
using ServiceStationContracts.BindingModels;
using ServiceStationContracts.SearchModels;
using ServiceStationContracts.ViewModels;
using ServiceStationsContracts.StorageContracts;
using ServiceStationsDataBaseImplement.Models;

namespace ServiceStationsDataBaseImplement.Implements
{
    public class ClientStorage : IClientStorage {

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

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

        public ClientViewModel? Delete(ClientBindingModel model) {
            using var context = new Database();
            var recDel = context.Clients
                .Include(x => x.WorkClients)
                .FirstOrDefault(x => x.Id == model.Id);
            if (recDel != null) {
                context.Clients.Remove(recDel);
                context.SaveChanges();
                return recDel.GetViewModel;
            }
            return null;
        }

        public ClientViewModel? GetElement(ClientSearchModel model) {
            using var context = new Database();
            if (model.Id.HasValue) {
                return context.Clients
                    .Include(x => x.WorkClients)
                    .FirstOrDefault(x => x.Id == model.Id)
                    ?.GetViewModel;
            }
            else {
                return context.Clients
                    .Include(x => x.WorkClients)
                    .FirstOrDefault(x => x.Login == model.Login)
                    ?.GetViewModel;
            }
        }

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