using ServiceStationContracts.BindingModels;
using ServiceStationContracts.SearchModels;
using ServiceStationContracts.ViewModels;
using ServiceStationsContracts.StorageContracts;
using ServiceStationsDataBaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ServiceStationsDataBaseImplement.Implements
{
    public class ClientWorkStorage : IClientWorkStorage
    {
        public ClientWorkViewModel? Delete(ClientWorkBindingModel model)
        {
            using var context = new Database();
            var element = context.ClientsWorks.FirstOrDefault(rec => rec.ClientId == model.ClientId);
            if (element != null)
            {
                context.ClientsWorks.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }

        public ClientWorkViewModel? GetElement(ClientWorkSearchModel model)
        {
            if (!model.ClientId.HasValue)
            {
                return null;
            }
            using var context = new Database();
            return context.ClientsWorks.FirstOrDefault(x =>
            (model.ClientId.HasValue && x.ClientId == model.ClientId))?.GetViewModel;
        }

        public List<ClientWorkViewModel> GetFilteredList(ClientWorkSearchModel model)
        {
            if (!model.ClientId.HasValue)
            {
                return new();
            }
            using var context = new Database();
            return context.ClientsWorks.Where(x => x.ClientId == model.ClientId).Select(x => x.GetViewModel).ToList(); 
        }

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

        public ClientWorkViewModel? Insert(ClientWorkBindingModel model)
        {
            var newComponent = ClientWork.Create(model);
            if (newComponent == null)
            {
                return null;
            }
            using var context = new Database();
            context.ClientsWorks.Add(newComponent);
            context.SaveChanges();
            return newComponent.GetViewModel;
        }

        public ClientWorkViewModel? Update(ClientWorkBindingModel model)
        {
            using var context = new Database();
            var component = context.ClientsWorks.FirstOrDefault(x => x.ClientId == model.ClientId);
            if (component == null)
            {
                return null;
            }
            component.Update(model);
            context.SaveChanges();
            return component.GetViewModel;
        }
    }
}