using System;
using Microsoft.Extensions.Caching.Memory;

namespace Common.Helper.Cache
{
    /// <summary>
    /// 缓存框架
    /// </summary>
    public class CacheHelper
    {
        private readonly IMemoryCache _memoryCache;

        /// <summary>
        /// 缓存框架
        /// </summary>
        /// <param name="memoryCache"></param>
        public CacheHelper(IMemoryCache memoryCache)
        {
            _memoryCache = memoryCache;
        }


        /// <summary>
        /// 存缓存
        /// </summary>
        /// <param name="key">关键词</param>
        /// <param name="value">值</param>
        public void Set(string key, string value)
        {
            var cacheOptions = new MemoryCacheEntryOptions()
                .SetSlidingExpiration(TimeSpan.FromMinutes(5));
            _memoryCache.Set(key, value,cacheOptions);
        }

        /// <summary>
        /// 存缓存 带时效
        /// </summary>
        /// <param name="key">关键词</param>
        /// <param name="value">值</param>
        /// <param name="aging">时效</param>
        public void SetAging(string key, string value,int aging)
        {
            var cacheOptions = new MemoryCacheEntryOptions()
                .SetSlidingExpiration(TimeSpan.FromMinutes(aging));
            _memoryCache.Set(key, value, cacheOptions);
        }

        /// <summary>
        /// 获取缓存值
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public string Get(string key)
        {
            return _memoryCache.TryGetValue(key, out string value) ? value:"";
        }
    }
}