using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Configuration;

namespace Ant.Service.Utilities
{
    /// <summary>
    /// cookies操作类
    /// </summary>
    public class CookiesOperater
    {
        /// <summary>
        /// cookies的作用域
        /// </summary>
        private static string domain = ConfigurationManager.AppSettings["domain"].Trim();

        #region 加密写入cookies
        /// <summary>
        /// 写入cookies[默认加密]
        /// </summary>
        /// <param name="cname">cookies名称</param>
        /// <param name="values">cookies的值</param>
        /// <param name="days">有效期</param>
        public static void InnerAESCookie(string cname, string values, int days)
        {
            HttpCookie hc = HttpContext.Current.Request.Cookies.Get(cname);

            if (hc == null)
            {
                hc = new HttpCookie(cname);
            }
            hc.Expires = DateTime.Now.AddDays(days);
            hc.Value = AES.Encode(values);
            hc.Domain = domain;
            HttpContext.Current.Response.Cookies.Add(hc);
        }
        /// <summary>
        /// 写入cookies默认14天时间 (两周)[默认加密]
        /// </summary>
        /// <param name="cname">cookies名称</param>
        /// <param name="values">cookies值</param>
        public static void InnerAESCookie(string cname, string values)
        {
            HttpCookie hc = HttpContext.Current.Request.Cookies.Get(cname);

            if (hc == null)
            {
                hc = new HttpCookie(cname);
            }
            hc.Expires = DateTime.Now.AddDays(14);
            hc.Value = AES.Encode(values);
            hc.Domain = domain;
            HttpContext.Current.Response.Cookies.Add(hc);
        }
        #endregion

        #region 不加密写入cookies
        /// <summary>
        /// 写入cookies[默认不加密]
        /// </summary>
        /// <param name="cname">cookies名称</param>
        /// <param name="values">cookies的值</param>
        /// <param name="days">有效期</param>
        public static void InnerCookie(string cname, string values, int days)
        {
            HttpCookie hc = HttpContext.Current.Request.Cookies.Get(cname);

            if (hc == null)
            {
                hc = new HttpCookie(cname);
            }
            hc.Expires = DateTime.Now.AddDays(days);
            hc.Value = values;
            hc.Domain = domain;
            HttpContext.Current.Response.Cookies.Add(hc);
        }

        /// <summary>
        /// 写入cookies默认14天时间 (两周)[默认不加密]
        /// </summary>
        /// <param name="cname">cookies名称</param>
        /// <param name="values">cookies值</param>
        public static void InnerCookie(string cname, string values)
        {
            HttpCookie hc = HttpContext.Current.Request.Cookies.Get(cname);

            if (hc == null)
            {
                hc = new HttpCookie(cname);
            }
            hc.Expires = DateTime.Now.AddDays(14);
            hc.Value = values;
            hc.Domain = domain;
            HttpContext.Current.Response.Cookies.Add(hc);
        }
        #endregion

        #region 不解密读取cookies
        /// <summary>
        /// 通过cookies的名称获取cookies的值[默认不解密]
        /// </summary>
        /// <param name="cname"></param>
        /// <returns></returns>
        public static string GetCookiesByName(string cname)
        {
            try
            {
                HttpCookie hc = HttpContext.Current.Request.Cookies.Get(cname);
                if (hc == null)
                {
                    return string.Empty;
                }
                else
                {
                    return hc.Value;
                }
            }
            catch
            {
                return null;
            }
        }
        #endregion

        #region 解密读取cookies
        /// <summary>
        /// 通过cookies的名称获取cookies的值[默认解密]
        /// </summary>
        /// <param name="cname"></param>
        /// <returns></returns>
        public static string GetAESCookiesByName(string cname)
        {
            try
            {
                HttpCookie hc = HttpContext.Current.Request.Cookies.Get(cname);
                if (hc == null)
                {
                    return string.Empty;
                }
                else
                {
                    return AES.Decode(hc.Value);
                }
            }
            catch
            {
                return null;
            }
        }
        #endregion

        #region 删除cookies
        /// <summary>
        /// 删除 指定 cookies
        /// </summary>
        /// <param name="cname">cookies的名称</param>
        /// <returns></returns>
        public static void DelCookiesByName(string cname)
        {
            HttpCookie myCookie = HttpContext.Current.Request.Cookies[cname];
            if (myCookie != null)
            {
                myCookie.Expires = DateTime.Now.AddDays(-14);
                myCookie.Value = null;
                myCookie.Domain = domain;
                HttpContext.Current.Response.Cookies.Add(myCookie);
            }
            else
            {
                myCookie = new HttpCookie(cname);
                myCookie.Expires = DateTime.Now.AddDays(-14);
                myCookie.Value = null;
                myCookie.Domain = domain;
                HttpContext.Current.Response.Cookies.Add(myCookie);
            }
        }
        #endregion
    }

}