using System;
using System.Collections;

using CB.LotteryCatchData.Interface;

namespace CB.LotteryCatchData
{
    public class CatchProvider
    {
        private CatchProvider()
        { }
        private static Hashtable cacheList = Hashtable.Synchronized(new Hashtable());
        private static object lockObject = new object();

        static CatchProvider()
        { }

        private static object LoadProvider(string typeName)
        {
            try
            {
                object provider = Activator.CreateInstance(Type.GetType(typeName, false, true));
                cacheList.Add(typeName, provider);
                return provider;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public static ICatchDataProvider GetProvider(string typeName)
        {
            object provider = cacheList[typeName];
            if (null == provider)
            {
                lock (lockObject)
                {
                    provider = cacheList[typeName];
                    if (null == provider)
                    {
                        provider = LoadProvider(typeName);
                    }
                }
            }
            return provider as ICatchDataProvider;
        }

        public static void ResetProvider()
        {
            cacheList.Clear();
        }
    }
}