marechai/Marechai/Services/SoundSynthsByMachineService.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 © 2003-2021 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 SoundSynthsByMachineService
    {
        readonly MarechaiContext _context;

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

        public async Task<List<SoundSynthByMachineViewModel>> GetByMachine(int machineId) =>
            await _context.SoundByMachine.Where(g => g.MachineId == machineId).
                           Select(g => new SoundSynthByMachineViewModel
                           {
                               Id           = g.Id,
                               Name         = g.SoundSynth.Name,
                               CompanyName  = g.SoundSynth.Company.Name,
                               SoundSynthId = g.SoundSynthId,
                               MachineId    = g.MachineId
                           }).OrderBy(g => g.CompanyName).ThenBy(g => g.Name).ToListAsync();

        public async Task DeleteAsync(long id, string userId)
        {
            SoundByMachine item = await _context.SoundByMachine.FindAsync(id);

            if(item is null)
                return;

            _context.SoundByMachine.Remove(item);

            await _context.SaveChangesWithUserAsync(userId);
        }

        public async Task<long> CreateAsync(int soundSynthId, int machineId, string userId)
        {
            var item = new SoundByMachine
            {
                SoundSynthId = soundSynthId,
                MachineId    = machineId
            };

            await _context.SoundByMachine.AddAsync(item);
            await _context.SaveChangesWithUserAsync(userId);

            return item.Id;
        }
    }
}