using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

namespace GiftShopContracts.DI
{
	public class ServiceDependencyContainer : IDependencyContainer
	{
		private ServiceProvider? _serviceProvider;
		private readonly ServiceCollection _serviceCollection;

		public ServiceDependencyContainer()
		{
			_serviceCollection = new ServiceCollection();
		}

		public void AddLogging(Action<ILoggingBuilder> configure)
		{
			_serviceCollection.AddLogging(configure);
		}

		public void RegisterType<T, U>(bool isSingle) where U : class, T where T : class
		{
			if (isSingle)
			{
				_serviceCollection.AddSingleton<T, U>();
			}
			else
			{
				_serviceCollection.AddTransient<T, U>();
			}

			_serviceProvider = null;
		}

		public void RegisterType<T>(bool isSingle) where T : class
		{
			if (isSingle)
			{
				_serviceCollection.AddSingleton<T>();
			}
			else
			{
				_serviceCollection.AddTransient<T>();
			}

			_serviceProvider = null;
		}

		public T Resolve<T>()
		{
			if (_serviceProvider == null)
			{
				_serviceProvider = _serviceCollection.BuildServiceProvider();
			}

			return _serviceProvider.GetService<T>()!;
		}
	}
}