using FurnitureAssemblyContracts.BindingModels;
using FurnitureAssemblyContracts.SearchModels;
using FurnitureAssemblyContracts.StoragesContracts;
using FurnitureAssemblyContracts.ViewModels;
using FurnitureAssemblyDatabaseImplement.Models;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;

namespace FurnitureAssemblyDatabaseImplement.Implements
{
    public class UsersStorage : IUsersStorage
    {
        public List<UsersViewModel> GetFullList()
        {
            using var context = new FurnitureAssemblyDatabase();

            return context.Userss
                .Include(x => x.Komments)
                .ThenInclude(x => x.Komment)
                .ToList()
                .Select(x => x.GetViewModel)
                .ToList();
        }

        public List<UsersViewModel> GetFilteredList(UsersSearchModel model)
        {
            if (string.IsNullOrEmpty(model.UsersName))
            {
                return new();
            }

            using var context = new FurnitureAssemblyDatabase();

            return context.Userss
                .Include(x => x.Komments)
                .ThenInclude(x => x.Komment)
                .Where(x => x.UsersName.Contains(model.UsersName))
                .ToList()
                .Select(x => x.GetViewModel)
                .ToList();
        }

        public UsersViewModel? GetElement(UsersSearchModel model)
        {
            if (string.IsNullOrEmpty(model.UsersName) && !model.Id.HasValue)
            {
                return null;
            }

            using var context = new FurnitureAssemblyDatabase();

            return context.Userss
                .Include(x => x.Komments)
                .ThenInclude(x => x.Komment)
                .FirstOrDefault(x => (!string.IsNullOrEmpty(model.UsersName) && x.UsersName == model.UsersName) ||
                        model.Id.HasValue && x.Id == model.Id)?.GetViewModel;
        }

        public UsersViewModel? Insert(UsersBindingModel model)
        {
            using var context = new FurnitureAssemblyDatabase();
            var newUser = Users.Create(context, model);

            if (newUser == null)
            {
                return null;
            }

            context.Userss.Add(newUser);
            context.SaveChanges();

            return newUser.GetViewModel;
        }

        public UsersViewModel? Update(UsersBindingModel model)
        {
            using var context = new FurnitureAssemblyDatabase();
            using var transaction = context.Database.BeginTransaction();

            try
            {
                var user = context.Userss.FirstOrDefault(rec => rec.Id == model.Id);

                if (user == null)
                {
                    return null;
                }

                user.Update(model);
                context.SaveChanges();
                user.UpdateWorkPieces(context, model);
                transaction.Commit();

                return user.GetViewModel;
            }
            catch
            {
                transaction.Rollback();
                throw;
            }
        }

        public UsersViewModel? Delete(UsersBindingModel model)
        {
            using var context = new FurnitureAssemblyDatabase();
            var element = context.Userss
                .Include(x => x.Komments)
                .Include(x => x.Ads)
                .FirstOrDefault(rec => rec.Id == model.Id);

            if (element != null)
            {
                context.Userss.Remove(element);
                context.SaveChanges();

                return element.GetViewModel;
            }

            return null;
        }
    }
}