using System;
using Newtonsoft.Json;
using System.Globalization;
using WingInterfaceLibrary.Enum;
using System.Collections.Concurrent;

namespace WingDeviceService.Common
{
    public class CacheManager<TObject> : IDisposable where TObject : class
    {
        private ConcurrentDictionary<string, TObject> _source = new();

        /// <summary>
        /// 添加/更新缓存
        /// </summary>
        /// <param name="key"></param>
        /// <param name="obj"></param>
        public TObject AddOrUpdate(string key, TObject obj)
        {
            return _source.AddOrUpdate(key, obj, (k, v) => obj);
        }

        /// <summary>
        /// 删除缓存
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public bool Remove(string key)
        {
            return _source.TryRemove(key, out _);
        }

        /// <summary>
        /// 获取缓存信息
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public TObject Get(string key)
        {
            if (_source.TryGetValue(key, out TObject obj))
            {
                return obj;
            }
            return default;
        }

        /// <summary>
        /// 清空缓存
        /// </summary>
        public void Dispose()
        {
            _source.Clear();
        }
    }

    public class CacheManagerSingle<TObject> where TObject : class
    {
        private CacheManagerSingle() { }
        private readonly static object _locker = new();
        private static CacheManager<TObject> _instance;

        /// <summary>
        /// 单例对象
        /// </summary>
        /// <value></value>
        public static CacheManager<TObject> Instance
        {
            get
            {
                if (_instance == null)
                {
                    lock (_locker)
                    {
                        if (_instance == null)
                        {
                            _instance = new CacheManager<TObject>();
                        }
                    }
                }
                return _instance;
            }
        }
    }
}