using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

/// <summary>

///CookiesSel 的摘要说明

/// </summary>

public class CookiesSel

{

    public CookiesSel()

    {

        //

        //TODO: 在此处添加构造函数逻辑

        //

    }

    private static HttpResponse respone = HttpContext.Current.Response;

    private static HttpRequest requst = HttpContext.Current.Request;

    /// <summary>

    /// 添加cookie并写入value

    /// </summary>

    /// <param name="cookName">新建的cookie的名称</param>

    /// <param name="cookValue">新建的cookie的值</param>

    /// <param name="expriTime">cookie的有效期以天为单位，-2表示不设置有效期</param>

    public static void AddCookies(string cookName, string cookValue, double expriTime)

    {

        if (requst.Cookies[cookName] != null)

        {

            DelCookies(cookName);

        }

        HttpCookie cook = new HttpCookie(cookName);

        if (expriTime != -2)

            cook.Expires = DateTime.Now.AddDays(expriTime);

        cook.Value = cookValue;

        respone.AppendCookie(cook);

    }

    /// <summary>

    /// 添加有键值的cookie

    /// </summary>

    /// <param name="cookName">cookie的名称</param>

    /// <param name="key">cookie内键值的名称</param>

    /// <param name="keyValue">cookie的键值value</param>

    /// <param name="expritime">cookie的有效期以天为单位，-2表示不设置有效期</param>

    public static void AddCookies(string cookName, string key, string keyValue, double expritime)

    {

        HttpCookie cook = new HttpCookie(cookName);

        if (!string.IsNullOrEmpty(key))

            cook.Values.Add(key, keyValue);

        if (expritime != -2)

            cook.Expires = DateTime.Now.AddDays(expritime);

        respone.AppendCookie(cook);

    }

    /// <summary>

    /// 设置cookie的有效期过期(删除cookie)

    /// </summary>

    /// <param name="cookName">要设置的cookie的名称</param>

    public static void DelCookies(string cookName)

    {

        DelCookiesValue(cookName, null);

    }

    /// <summary>

    /// 删除cookie或者删除cookie的键值

    /// </summary>

    /// <param name="cookName">cookie的名称</param>

    /// <param name="key">键值的名称（如果为NULL则运行删除cookie的代码，否则运行删除cookie中的键值的代码）</param>

    public static void DelCookiesValue(string cookName, string key)

    {

        HttpCookie cook = requst.Cookies[cookName];

        if (cook != null)

        {

            if (!string.IsNullOrEmpty(key) && cook.HasKeys)

            {

                if (cook.Values.Count <= 1)

                    cook.Expires = DateTime.Now.AddDays(-1);

                else

                    cook.Values.Remove(key);

                respone.AppendCookie(cook);

            }

            else

            {

                cook.Expires = DateTime.Now.AddDays(-1);

                respone.AppendCookie(cook);

            }

        }

    }

    /// <summary>

    /// 获取cookie的值

    /// </summary>

    /// <param name="cookName">cookie的名称</param>

    /// <returns>返回cookie的值，如果不存在cookie则返回NULL</returns>

    public static string GetCookieValue(string cookName)

    {

        return GetCookieOrKeyValue(cookName, null);

    }

    /// <summary>

    /// 获取cookie的值或cookie的键值

    /// </summary>

    /// <param name="cookName">cookie的名称</param>

    /// <param name="keyName">cookie内键值的名称（NULL代表获取cookie的值）</param>

    /// <returns>返回cookie的值或者键值，如果不存在cookie则返回NULL</returns>

    public static string GetCookieOrKeyValue(string cookName, string keyName)

    {

        HttpCookie cook = requst.Cookies[cookName];

        if (cook != null)

        {

            if (!string.IsNullOrEmpty(keyName) && cook.HasKeys)

                return cook.Values[keyName].ToString();

            else

                return cook.Value.ToString();

        }

        else

            return null;

    }

}