add architecture skeleton

GymLogAI.Persistence/DependencyInjection.cs

@@ -0,0 +1,29 @@
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Abstractions;
+using GymLogAI.Persistence.Infrastructure;
+using GymLogAI.Persistence.Repositories;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace GymLogAI.Persistence;
+
+public static class DependencyInjection
+{
+    public static IServiceCollection AddPersistence(this IServiceCollection services, IConfiguration configuration)
+    {
+        var connectionString = configuration.GetConnectionString("Postgres")
+            ?? "Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres";
+
+        services.AddDbContext<AppDbContext>(options => options.UseNpgsql(connectionString));
+
+        services.AddScoped<IUserRepository, UserRepository>();
+        services.AddScoped<ITelegramMessageRepository, TelegramMessageRepository>();
+        services.AddScoped<IWorkoutRepository, WorkoutRepository>();
+        services.AddScoped<IExerciseRepository, ExerciseRepository>();
+        services.AddSingleton<IClock, SystemClock>();
+        services.AddSingleton<IIdGenerator, GuidIdGenerator>();
+
+        return services;
+    }
+}