using Autofac;
using Autofac.Extras.NLog;
using Autofac.Integration.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.Mvc;

namespace EnVisage.Code.Cache
{
	public abstract class Cache<T>
	{
        #region private fields
        private AutofacDependencyResolver resolver => DependencyResolver.Current as AutofacDependencyResolver;
        private ILogger _logger;
        #endregion

        #region properties
        protected virtual string CACHE_KEY {get; private set;}

		public IEnumerable<T> Value
		{
			get
			{
				if (!CacheManager.Instance.IsInCache(CACHE_KEY))
					SetValuesToCache();

				return (IEnumerable<T>)CacheManager.Instance.GetCacheData(CACHE_KEY);
			}
		}

        protected ILogger Logger => _logger ?? (_logger = resolver?.ApplicationContainer?.Resolve<ILogger>());
        #endregion

        public Cache()
		{
            //Logger.Debug($"Constructor of type {this.GetType().ToString()}() has been called");
            if (!CacheManager.Instance.IsInCache(CACHE_KEY))
			    SetValuesToCache();
		}
        public Cache(bool populate)
        {
            //Logger.Debug($"Constructor of type {this.GetType().ToString()}(bool populate) has been called. populate = {populate}");
            if (!CacheManager.Instance.IsInCache(CACHE_KEY) && populate)
                SetValuesToCache();
        }
        public void Invalidate()
		{
			if (CacheManager.Instance.IsInCache(CACHE_KEY))
				CacheManager.Instance.RemoveFromCache(CACHE_KEY);
		}
        public bool ContainsEntry()
        {
            return CacheManager.Instance.IsInCache(CACHE_KEY);
        }
        public virtual void AddValueToCache(T obj)
        {
            CacheManager.Instance.AddToCache(CACHE_KEY, obj);
        }
        public virtual T GetValueFromCache()
        {
            return (T) CacheManager.Instance.GetCacheData(CACHE_KEY);

        }
        protected virtual void SetValuesToCache()
		{
			using (EnVisageEntities context = new EnVisageEntities())
			{
			    var value = context.ProjectAccesses.AsNoTracking().ToList();
				CacheManager.Instance.AddToCache(CACHE_KEY, value);
			}
		}
	}
}