using System.Reflection;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.Hosting;
using GB5Shared.ListQuery;
using Newtonsoft.Json;

namespace PIESL;

public class PIEModule : IModule
{
    public void Register(IServiceCollection services, IConfiguration configuration)
    {
        services.AddHttpContextAccessor();

        services.AddScoped<LoginDTO>(sp =>
        {
            var ctx = sp.GetRequiredService<IHttpContextAccessor>().HttpContext;
            if (ctx != null && ctx.Request.Headers.TryGetValue("Login", out var h))
                return JsonConvert.DeserializeObject<LoginDTO>(h!)!;
            return new LoginDTO();
        });

        var bll = Assembly.Load("PIEBLL");
        var dal = Assembly.Load("PIEDAL");
        services.Scan(scan => scan
            .FromAssemblies(bll, dal)
            // Exclude plain DTOs/records — a `record` implicitly implements IEquatable<T>, so without
            // this filter AsImplementedInterfaces() registers DTOs (e.g. PIEVariantListQuery) as
            // services and the container later fails trying to activate them via their data constructor.
            .AddClasses(c => c.Where(t => !t.IsAbstract && !t.IsInterface
                && (t.Namespace == null || !t.Namespace.Contains(".DTO"))))
            .AsImplementedInterfaces()
            .WithScopedLifetime());

        services.AddListInfrastructure(dal);
    }

    public void MapEndpoints(WebApplication app) { }
}