using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;

namespace AUTS.Services.Extensions
{
    /// <summary>
    /// cookie扩展
    /// </summary>
    public static class CookieExtensions
    {
        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue">值</param>
        public static void WriteCookie(string strName, string strValue)
        {
            HttpCookie httpCookie = HttpContext.Current.Request.Cookies[strName];
            if (httpCookie == null)
            {
                httpCookie = new HttpCookie(strName);
            }
            httpCookie.Value = strValue;
            HttpContext.Current.Response.AppendCookie(httpCookie);
        }

        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue">值</param>
        /// <param name="strValue">过期时间(分钟)</param>
        public static void WriteCookie(string strName, string strValue, int expires)
        {
            HttpCookie httpCookie = HttpContext.Current.Request.Cookies[strName];
            if (httpCookie == null)
            {
                httpCookie = new HttpCookie(strName);
            }
            httpCookie.Value = strValue;
            httpCookie.Expires = DateTime.Now.AddMinutes((double)expires);
            HttpContext.Current.Response.AppendCookie(httpCookie);
        }

        /// <summary>
        /// 读cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <returns>cookie值</returns>
        public static string GetCookie(string strName)
        {
            if (HttpContext.Current.Request.Cookies != null && HttpContext.Current.Request.Cookies[strName] != null)
            {
                return HttpContext.Current.Request.Cookies[strName].Value.ToString();
            }
            return "";
        }

        /// <summary>
        /// 检查Cookie,如果存在则为true
        /// </summary>
        /// <param name="strName"></param>
        /// <returns></returns>
        public static bool CheckCookie(string strName)
        {
            return HttpContext.Current.Request.Cookies[strName] != null;
        }

        /// <summary>
        /// 删除Cookie
        /// </summary>
        /// <param name="strName"></param>
        public static void RemoveCookie(string strName)
        {
            HttpContext.Current.Request.Cookies.Remove(strName);
        }
    }
}