using Microsoft.AspNetCore.Http;
using System;
using System.Collections.Generic;
using System.Text;

namespace Utils
{
    /// <summary>
    /// 对session进行封装类
    /// </summary>
    public class SessionHelper
    {
        //private IHttpContextAccessor _accessor;
        private ISession _session;
        private IRequestCookieCollection _requestCookie;
        private IResponseCookies _responseCookie;
        public SessionHelper(HttpContext context)
        {
            _session = context.Session;
            _requestCookie = context.Request.Cookies;
            _responseCookie = context.Response.Cookies;
        }
        /// <summary>
        /// 设置session值
        /// </summary>
        /// <param name="session"></param>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        public void SetSession(string key, string value)
        {
            var bytes = System.Text.Encoding.UTF8.GetBytes(value);
            _session.Set(key, bytes);
        }
        /// <summary>
        /// 获取Session值
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public string GetSession(string key)
        {
            Byte[] bytes;
            _session.TryGetValue(key, out bytes);
            if (bytes == null)
            {
                return "";
            }
            var value = System.Text.Encoding.UTF8.GetString(bytes);

            if (string.IsNullOrEmpty(value))
            {
                value = string.Empty;
            }
            return value;
        }
    }
}