initial commit

Features/Thirdparty/CustomerGroup/Cqrs/GetCustomerGroupByIdHandler.cs

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+using Indotalent.Infrastructure.Database;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+
+namespace Indotalent.Features.Thirdparty.CustomerGroup.Cqrs;
+
+public class GetCustomerGroupByIdResponse
+{
+    public string? Id { get; set; }
+    public string? Name { get; set; }
+    public string? Description { get; set; }
+    public DateTimeOffset? CreatedAt { get; set; }
+    public string? CreatedBy { get; set; }
+    public DateTimeOffset? UpdatedAt { get; set; }
+    public string? UpdatedBy { get; set; }
+}
+
+public record GetCustomerGroupByIdQuery(string Id) : IRequest<GetCustomerGroupByIdResponse?>;
+
+public class GetCustomerGroupByIdHandler : IRequestHandler<GetCustomerGroupByIdQuery, GetCustomerGroupByIdResponse?>
+{
+    private readonly AppDbContext _context;
+
+    public GetCustomerGroupByIdHandler(AppDbContext context) => _context = context;
+
+    public async Task<GetCustomerGroupByIdResponse?> Handle(GetCustomerGroupByIdQuery request, CancellationToken cancellationToken)
+    {
+        return await _context.CustomerGroup
+            .AsNoTracking()
+            .Where(x => x.Id == request.Id)
+            .Select(x => new GetCustomerGroupByIdResponse
+            {
+                Id = x.Id,
+                Name = x.Name,
+                Description = x.Description,
+                CreatedAt = x.CreatedAt,
+                CreatedBy = x.CreatedBy,
+                UpdatedAt = x.UpdatedAt,
+                UpdatedBy = x.UpdatedBy,
+            })
+            .FirstOrDefaultAsync(cancellationToken);
+    }
+}