using System.Collections.Generic;
using System.Reflection;
using Microsoft.AspNetCore.Mvc.ApplicationParts;
using Microsoft.AspNetCore.Mvc.Controllers;
using Microsoft.Extensions.DependencyInjection;
using OpenHarbor.CQRS.Abstractions.Discovery;
using OpenHarbor.CQRS.AspNetCore.Abstractions.Attributes;

namespace OpenHarbor.CQRS.AspNetCore.Mvc;

public class QueryControllerFeatureProvider : IApplicationFeatureProvider<ControllerFeature>
{
    private readonly ServiceProvider _serviceProvider;

    public QueryControllerFeatureProvider(ServiceProvider serviceProvider)
    {
        _serviceProvider = serviceProvider;
    }

    public void PopulateFeature(IEnumerable<ApplicationPart> parts, ControllerFeature feature)
    {
        var queryDiscovery = this._serviceProvider.GetRequiredService<IQueryDiscovery>();
        foreach (var f in queryDiscovery.GetQueries())
        {
            var ignoreAttribute = f.QueryType.GetCustomAttribute<QueryControllerIgnoreAttribute>();
            if (ignoreAttribute != null)
                continue;

            if (f.Category != "BasicQuery")
                continue;

            var controllerType = typeof(QueryController<,>).MakeGenericType(f.QueryType, f.QueryResultType);
            var controllerTypeInfo = controllerType.GetTypeInfo();
            feature.Controllers.Add(controllerTypeInfo);
        }
    }
}