using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AircraftPlantContracts.DependencyInjections
{
	/// <summary>
	/// Реализация интерфейса установки зависимости между элементами 
	/// </summary>
	public class ServiceDependencyContainer : IDependencyContainer
	{
		/// <summary>
		/// Провайдер сервисов для разрешения зависимостей
		/// </summary>
		private ServiceProvider? _serviceProvider;

		/// <summary>
		/// Коллекция сервисов для регистрации зависимостей
		/// </summary>
		private readonly ServiceCollection _serviceCollection;

		/// <summary>
		/// Конструктор
		/// </summary>
		public ServiceDependencyContainer()
		{
			_serviceCollection = new ServiceCollection();
		}

		/// <summary>
		/// Регистрация логгера
		/// </summary>
		/// <param name="configure"></param>
		public void AddLogging(Action<ILoggingBuilder> configure)
		{
			_serviceCollection.AddLogging(configure);
		}

		/// <summary>
		/// Добавление зависимости
		/// </summary>
		/// <typeparam name="T"></typeparam>
		/// <typeparam name="U"></typeparam>
		/// <param name="isSingle"></param>
		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;
		}

		/// <summary>
		/// Добавление зависимости
		/// </summary>
		/// <typeparam name="T"></typeparam>
		/// <param name="isSingle"></param>
		public void RegisterType<T>(bool isSingle) where T : class
		{
			if (isSingle)
			{
				_serviceCollection.AddSingleton<T>();
			}
			else
			{
				_serviceCollection.AddTransient<T>();
			}
			_serviceProvider = null;
		}

		/// <summary>
		/// Получение класса со всеми зависимостями
		/// </summary>
		/// <typeparam name="T"></typeparam>
		/// <returns></returns>
		public T Resolve<T>()
		{
			if (_serviceProvider == null)
			{
				_serviceProvider = _serviceCollection.BuildServiceProvider();
			}
			return _serviceProvider.GetService<T>()!;
		}
	}
}