Add TODOs for middleware, generic service, and CQRS

Added TODO comments in Program.cs for exception handling middleware, and in CatalogService.cs and ICatalogService.cs for creating a generic service and implementing CQRS with MediatR. No functional changes made.

DbFirst.API/Program.cs

@@ -4,6 +4,8 @@ using DbFirst.Infrastructure;
 using DbFirst.Infrastructure.Repositories;
 using Microsoft.EntityFrameworkCore;
 
+//TODO: create and add exception handling middleware
+
 var builder = WebApplication.CreateBuilder(args);
 
 // Add services to the container.

DbFirst.Application/Catalogs/CatalogService.cs

@@ -4,6 +4,8 @@ using DbFirst.Domain.Entities;
 
 namespace DbFirst.Application.Catalogs;
 
+//TODO: create generic service to reduce code duplication
+//TODO: implement CQRS pattern with MediatR
 public class CatalogService : ICatalogService
 {
     private readonly ICatalogRepository _repository;

DbFirst.Application/Catalogs/ICatalogService.cs

@@ -1,5 +1,6 @@
 namespace DbFirst.Application.Catalogs;
 
+//TODO: create generic service to reduce code duplication
 public interface ICatalogService
 {
     Task<List<CatalogReadDto>> GetAllAsync(CancellationToken cancellationToken = default);

DbFirst.Domain/Repositories/ICatalogRepository.cs

@@ -2,6 +2,8 @@ using DbFirst.Domain.Entities;
 
 namespace DbFirst.Domain.Repositories;
 
+// TODO: instead of creating interface per entity, consider using generic repository pattern (eg. IRepository<T>) to reduce code duplication.
+//TODO: move to application layer as a part of clean architecture
 public interface ICatalogRepository
 {
     Task<List<VwmyCatalog>> GetAllAsync(CancellationToken cancellationToken = default);

DbFirst.Infrastructure/ApplicationDbContext.cs

@@ -12,6 +12,7 @@ public partial class ApplicationDbContext : DbContext
 
     public virtual DbSet<VwmyCatalog> VwmyCatalogs { get; set; }
 
+    // TODO: Configure column names on appsettings via IConfiguration
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         modelBuilder.Entity<VwmyCatalog>(entity =>

DbFirst.Infrastructure/Repositories/CatalogRepository.cs

@@ -6,6 +6,7 @@ using System.Data;
 
 namespace DbFirst.Infrastructure.Repositories;
 
+// TODO: instead of creating implementation of repository per entity, consider using generic repository pattern (eg. Repository<T>) to reduce code duplication.
 public class CatalogRepository : ICatalogRepository
 {
     private readonly ApplicationDbContext _db;