marechai/Marechai/Services/MachineFamiliesService.cs

/******************************************************************************
// MARECHAI: Master repository of computing history artifacts information
// ----------------------------------------------------------------------------
//
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// --[ License ] --------------------------------------------------------------
//
//     This program is free software: you can redistribute it and/or modify
//     it under the terms of the GNU General Public License as
//     published by the Free Software Foundation, either version 3 of the
//     License, or (at your option) any later version.
//
//     This program is distributed in the hope that it will be useful,
//     but WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//     GNU General Public License for more details.
//
//     You should have received a copy of the GNU General Public License
//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2003-2020 Natalia Portillo
*******************************************************************************/

using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Marechai.Database.Models;
using Marechai.ViewModels;
using Microsoft.EntityFrameworkCore;

namespace Marechai.Services
{
    public class MachineFamiliesService
    {
        readonly MarechaiContext _context;

        public MachineFamiliesService(MarechaiContext context) => _context = context;

        public async Task<List<MachineFamilyViewModel>> GetAsync() =>
            await _context.MachineFamilies.OrderBy(m => m.Company.Name).ThenBy(m => m.Name).
                           Select(m => new MachineFamilyViewModel
                           {
                               Id = m.Id, Company = m.Company.Name, Name = m.Name
                           }).OrderBy(m => m.Name).ToListAsync();

        public async Task<MachineFamilyViewModel> GetAsync(int id) =>
            await _context.MachineFamilies.Where(f => f.Id == id).Select(m => new MachineFamilyViewModel
            {
                Id = m.Id, CompanyId = m.CompanyId, Name = m.Name
            }).FirstOrDefaultAsync();

        public async Task UpdateAsync(MachineFamilyViewModel viewModel)
        {
            MachineFamily model = await _context.MachineFamilies.FindAsync(viewModel.Id);

            if(model is null)
                return;

            model.Name      = viewModel.Name;
            model.CompanyId = viewModel.CompanyId;

            await _context.SaveChangesAsync();
        }

        public async Task<int> CreateAsync(MachineFamilyViewModel viewModel)
        {
            var model = new MachineFamily
            {
                Name = viewModel.Name, CompanyId = viewModel.CompanyId
            };

            await _context.MachineFamilies.AddAsync(model);
            await _context.SaveChangesAsync();

            return model.Id;
        }

        public async Task DeleteAsync(int id)
        {
            MachineFamily item = await _context.MachineFamilies.FindAsync(id);

            if(item is null)
                return;

            _context.MachineFamilies.Remove(item);

            await _context.SaveChangesAsync();
        }
    }
}