using Contracts.BindingModels;
using Contracts.SearchModel;
using Contracts.Storage;
using Contracts.ViewModels;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBase.Implements
{
    public class PlaceStorage : IPlaceStorage
    {
        public List<PlaceVM> GetFullList()
        {
            using var context = new LogisticContext();
            return context.Places.FromSqlRaw("Select * From Place")
                    .ToList()
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public List<PlaceVM> GetFilteredList(PlaceSM model)
        {
            if (string.IsNullOrEmpty(model.Title))
            {
                return new();
            }
            using var context = new LogisticContext();
            return context.Places
                    .FromSqlRaw("Select * FROM Place WHERE LIKE %{0}%", model.Title)
                    .ToList()
                    .Select(x => x.GetViewModel)
                    .ToList();

        }

        public PlaceVM? GetElement(PlaceSM model)
        {
            if (!model.Id.HasValue)
            {
                return null;
            }
            using var context = new LogisticContext();
            return context.Places
                .FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))
                ?.GetViewModel;
        }

        public PlaceVM? Insert(PlaceBM model)
        {
            using var context = new LogisticContext();
            var newPlace = Place.Create(context, model);
            if (newPlace == null)
            {
                return null;
            }
            context.Places.Add(newPlace);
            context.SaveChanges();
            return newPlace.GetViewModel;
        }

        public PlaceVM? Update(PlaceBM model)
        {
            using var context = new LogisticContext();
            using var transaction = context.Database.BeginTransaction();
            try
            {
                var place = context.Places.FirstOrDefault(rec => rec.Id == model.Id);
                if (place == null)
                {
                    return null;
                }
                place.Update(model);
                context.SaveChanges();
                transaction.Commit();
                return place.GetViewModel;
            }
            catch
            {
                transaction.Rollback();
                throw;
            }
        }

        public PlaceVM? Delete(PlaceBM model)
        {
            using var context = new LogisticContext();
            var element = context.Places
                .FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Places.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}