using HN.Application;
using HN.Domain;
using HN.Infrastructure.Behaviors;
using HN.Infrastructure.Repositories;
using MediatR;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace HN.Infrastructure
{
  public sealed class HNServicesBuilder
  {
    private readonly IServiceCollection _services;

    internal HNServicesBuilder(IServiceCollection services)
    {
      _services = services;
    }

    public void ResolveConnectedUserWith<TExecutingUserProvider>() where TExecutingUserProvider : class, IExecutingUserProvider
    {
      _services.AddScoped<IExecutingUserProvider, TExecutingUserProvider>();
    }
  }

  public static class ServiceCollectionExtensions
  {
    public static HNServicesBuilder AddHN(this IServiceCollection services, IConfiguration configuration)
    {
      services.AddDbContext<HNDbContext>(options => options.UseSqlite(configuration.GetConnectionString("Default")));
      services.AddScoped<IHNContext, HNDbContext>();
      services.AddScoped<ILinkRepository, LinkRepository>();
      services.AddScoped<ICommentRepository, CommentRepository>();
      services.AddScoped(typeof(IPipelineBehavior<,>), typeof(UnitOfWorkBehavior<,>));
      services.AddMediatR(typeof(HN.Application.IHNContext));

      return new HNServicesBuilder(services);
    }
  }
}