using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace EnVisage.Code.Cache
{
	public abstract class Cache<T>
	{
		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);
			}
		}

		public Cache()
		{
            if (!CacheManager.Instance.IsInCache(CACHE_KEY))
			    SetValuesToCache();
		}

		public void Invalidate()
		{
			if (CacheManager.Instance.IsInCache(CACHE_KEY))
				CacheManager.Instance.RemoveFromCache(CACHE_KEY);
		}

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