PIbd-31_Kryukov.A.I._COP_9/EnterpriseDataBaseImplement/Implements/SubdivisionStorage.cs

using EnterpriseContracts.BindingModels;
using EnterpriseContracts.StorageContracts;
using EnterpriseContracts.ViewModels;
using EnterpriseDataBaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EnterpriseDataBaseImplement.Implements
{
    public class SubdivisionStorage : ISubdivisionStorage
    {
        public List<SubdivisionViewModel> GetFullList()
        {
            var context = new EnterpriseDataBase();
            return context.Subdivisions
                .ToList()
                .Select(x => x.GetViewModel)
                .ToList();
        }

        public List<SubdivisionViewModel> GetFilteredList(SubdivisionBindingModel model)
        {
            var context = new EnterpriseDataBase();
            return context.Subdivisions
                .Where(x => x.Name.Contains(model.Name))
                .ToList()
                .Select(x => x.GetViewModel)
                .ToList();
        }

        public SubdivisionViewModel? GetElement(SubdivisionBindingModel? model)
        {
            if (model == null) return null;
            using var context = new EnterpriseDataBase();
            var x = context.Subdivisions
                .ToList()
                .FirstOrDefault(rec => rec.Name == model.Name || rec.Id == model.Id);
            return x?.GetViewModel;
        }

        public void Insert(SubdivisionBindingModel model)
        {
            var context = new EnterpriseDataBase();
            var transaction = context.Database.BeginTransaction();
            try
            {
                var x = Subdivision.Create(model);
                context.Subdivisions.Add(x);
                context.SaveChanges();
                transaction.Commit();
            }
            catch
            {
                transaction.Rollback();
                throw;
            }
        }

        public void Update(SubdivisionBindingModel model)
        {
            var context = new EnterpriseDataBase();
            var transaction = context.Database.BeginTransaction();
            try
            {
                var x = context.Subdivisions.FirstOrDefault(rec => rec.Id == model.Id);
                if (x == null)
                    throw new Exception("Not found");
                x.Update(model);
                context.SaveChanges();
                transaction.Commit();
            }
            catch
            {
                transaction.Rollback();
                throw;
            }
        }

        public void Delete(SubdivisionBindingModel model)
        {
            var context = new EnterpriseDataBase();
            var x = context.Subdivisions.FirstOrDefault(rec => rec.Id == model.Id);
            if (x != null)
            {
                context.Subdivisions.Remove(x);
                context.SaveChanges();
            }
            else
                throw new Exception("Id isn't exists");
        }
    }
}