Rename service.

Marechai/Services/GpusByMachineService.cs

@@ -0,0 +1,48 @@
+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 GpusByMachineService
+    {
+        readonly MarechaiContext _context;
+
+        public GpusByMachineService(MarechaiContext context) => _context = context;
+
+        public async Task<List<GpuByMachineViewModel>> GetByMachine(int machineId) =>
+            await _context.GpusByMachine.Where(g => g.MachineId == machineId).Select(g => new GpuByMachineViewModel
+            {
+                Id        = g.Id, Name = g.Gpu.Name, CompanyName = g.Gpu.Company.Name, GpuId = g.GpuId,
+                MachineId = g.MachineId
+            }).OrderBy(g => g.CompanyName).ThenBy(g => g.Name).ToListAsync();
+
+        public async Task DeleteAsync(long id)
+        {
+            GpusByMachine item = await _context.GpusByMachine.FindAsync(id);
+
+            if(item is null)
+                return;
+
+            _context.GpusByMachine.Remove(item);
+
+            await _context.SaveChangesAsync();
+        }
+
+        public async Task<long> CreateAsync(int gpuId, int machineId)
+        {
+            var item = new GpusByMachine
+            {
+                GpuId = gpuId, MachineId = machineId
+            };
+
+            await _context.GpusByMachine.AddAsync(item);
+            await _context.SaveChangesAsync();
+
+            return item.Id;
+        }
+    }
+}