using BuddyFinance.MEF.Contracts;
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.ComponentModel.Composition.Hosting;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace BuddyFinance.MEF
{
    public class Importer
    {
        [ImportMany(typeof(ICreditBureauIntegrator))]
        public IEnumerable<Lazy<ICreditBureauIntegrator>> _components;

        public Importer()
        {
            Import();
        }

        public void Import()
        {
            //An aggregate catalog that combines multiple catalogs
            var catalog = new AggregateCatalog();

            //Add all the parts found in all assemblies in
            //the same directory as the executing program
            catalog.Catalogs.Add(new DirectoryCatalog(Path.GetDirectoryName(ConfigurationManager.AppSettings["ComponentsFolder"])));

            //Create the CompositionContainer with the parts in the catalog.
            CompositionContainer container = new CompositionContainer(catalog);

            //Fill the imports of this object
            container.ComposeParts(this);
        }
    }
}