refactor: reorganize Infrastructure layer into folder structure with DI

src/GreenHome.Infrastructure/Services/Device/DeviceSettingsService.cs

@@ -0,0 +1,53 @@
+using AutoMapper;
+using GreenHome.Application;
+using GreenHome.Infrastructure.Data;
+using Microsoft.EntityFrameworkCore;
+
+namespace GreenHome.Infrastructure.Services.Device;
+
+public sealed class DeviceSettingsService : IDeviceSettingsService
+{
+    private readonly GreenHomeDbContext _dbContext;
+    private readonly IMapper _mapper;
+
+    public DeviceSettingsService(GreenHomeDbContext dbContext, IMapper mapper)
+    {
+        _dbContext = dbContext;
+        _mapper = mapper;
+    }
+
+    public async Task<DeviceSettingsDto?> GetByDeviceIdAsync(int deviceId, CancellationToken cancellationToken)
+    {
+        var settings = await _dbContext.DeviceSettings
+            .Include(x => x.Device)
+            .AsNoTracking()
+            .FirstOrDefaultAsync(x => x.DeviceId == deviceId, cancellationToken);
+
+        return settings != null ? _mapper.Map<DeviceSettingsDto>(settings) : null;
+    }
+
+    public async Task<int> CreateAsync(DeviceSettingsDto dto, CancellationToken cancellationToken)
+    {
+        var entity = _mapper.Map<Domain.DeviceSettings>(dto);
+        entity.CreatedAt = DateTime.UtcNow;
+        entity.UpdatedAt = DateTime.UtcNow;
+
+        _dbContext.DeviceSettings.Add(entity);
+        await _dbContext.SaveChangesAsync(cancellationToken);
+        return entity.Id;
+    }
+
+    public async Task UpdateAsync(DeviceSettingsDto dto, CancellationToken cancellationToken)
+    {
+        var entity = await _dbContext.DeviceSettings
+            .FirstOrDefaultAsync(x => x.DeviceId == dto.DeviceId, cancellationToken);
+
+        if (entity == null)
+            throw new InvalidOperationException($"Device settings not found for device ID {dto.DeviceId}");
+
+        _mapper.Map(dto, entity);
+        entity.UpdatedAt = DateTime.UtcNow;
+
+        await _dbContext.SaveChangesAsync(cancellationToken);
+    }
+}