using Microsoft.EntityFrameworkCore; // UseSqlServer
using Microsoft.Extensions.DependencyInjection; // IServiceCollection

namespace Packt.Shared;

public static class NorthwindContextExtensions
{
  /// <summary>
  /// Adds NorthwindContext to the specified IServiceCollection. Uses the SqlServer database provider.
  /// </summary>
  /// <param name="services"></param>
  /// <param name="connectionString">Set to override the default.</param>
  /// <returns>An IServiceCollection that can be used to add more services.</returns>
  public static IServiceCollection AddNorthwindContext(
    this IServiceCollection services,
    string connectionString = "Data Source=.;Initial Catalog=Northwind;" +
      "Integrated Security=true;MultipleActiveResultsets=true;Encrypt=false")
  {
    services.AddDbContext<NorthwindContext>(options =>
    {
      options.UseSqlServer(connectionString);

      options.LogTo(WriteLine, // Console
        new[] { Microsoft.EntityFrameworkCore
          .Diagnostics.RelationalEventId.CommandExecuting });
    }, 
    // Register with a transient lifetime to avoid concurrency issues with Blazor Server projects.
    contextLifetime: ServiceLifetime.Transient, optionsLifetime: ServiceLifetime.Transient);

    return services;
  }
}