ECommerce.Model/DependencyInjection.cs

using ECommerce.Model.Data;
using ECommerce.Model.Repositories;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Diagnostics;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace ECommerce.Model;

public static class DependencyInjection
{
    public static IServiceCollection AddModelLayer(this IServiceCollection services, IConfiguration config)
    {
        services.AddDbContext<AppDbContext>(options =>
            options.UseNpgsql(config.GetConnectionString("DefaultConnection"))
                   .ConfigureWarnings(w => w.Ignore(RelationalEventId.PendingModelChangesWarning)));

        services.AddScoped(typeof(IRepository<>), typeof(Repository<>));
        services.AddScoped<ICustomerRepository, CustomerRepository>();

        return services;
    }
}