/// <summary>
/// CookieHelper操作工具類
/// </summary>
public class CookieHelper
{
    /// <summary>
    /// 設置cookie值
    /// </summary>
    /// <param name="cookiename">cookie名稱</param>
    /// <param name="key">鍵</param>
    /// <param name="val">值</param>
    /// <param name="expires">失效期</param>
    public static void WriteCookie(string cookiename, string key, string val, DateTime expires)
    {
        HttpRequest Request = HttpContext.Current.Request;
        HttpResponse Response = HttpContext.Current.Response;
        HttpCookie cookie = Request.Cookies[cookiename];
        if (cookie == null)
        {
            cookie = new HttpCookie(cookiename);
            cookie.Domain = ConfigHelper.SiteLoginDomain;
        }
        if (val == null)
        {
            cookie.Values.Remove(key);
        }
        else
        {
            cookie.Values[key] = val;
            cookie.Expires = expires;
        }

        Response.Cookies.Add(cookie);
    }


    public static void WriteCookie(string cookiename, string key, string val, int expires)
    {
        HttpRequest Request = HttpContext.Current.Request;
        HttpResponse Response = HttpContext.Current.Response;
        HttpCookie cookie = Request.Cookies[cookiename];
        if (cookie == null)
        {
            cookie = new HttpCookie(cookiename);
            cookie.Domain = ConfigHelper.SiteLoginDomain;
        }
        if (val == null)
        {
            cookie.Values.Remove(key);
        }
        else
        {
            cookie.Values[key] = val;
            cookie.Expires = DateTime.Now.AddMinutes(expires);
        }

        Response.Cookies.Add(cookie);
    }

    /// <summary>
    /// 寫cookie值
    /// </summary>
    /// <param name="strName">名稱</param>
    /// <param name="strValue">值</param>
    public static void WriteCookie(string strName, string strValue)
    {
        HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
        if (cookie == null)
        {
            cookie = new HttpCookie(strName);
        }
        cookie.Value = strValue;
        HttpContext.Current.Response.AppendCookie(cookie);
    }

    /// <summary>
    /// 寫cookie值
    /// </summary>
    /// <param name="strName">名稱</param>
    /// <param name="strValue">值</param>
    public static void WriteCookie(string strName, string key, string strValue)
    {
        HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
        if (cookie == null)
        {
            cookie = new HttpCookie(strName);
        }
        cookie[key] = strValue;
        HttpContext.Current.Response.AppendCookie(cookie);
    }

    /// <summary>
    /// 寫cookie值
    /// </summary>
    /// <param name="strName">名稱</param>
    /// <param name="strValue">值</param>
    /// <param name="strValue">過期時間(分鐘)</param>
    public static void WriteCookie(string strName, string strValue, int expires)
    {
        HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
        if (cookie == null)
        {
            cookie = new HttpCookie(strName);
        }
        cookie.Value = strValue;
        cookie.Expires = DateTime.Now.AddMinutes(expires);
        HttpContext.Current.Response.AppendCookie(cookie);
    }

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

    /// <summary>
    /// 移除指定名稱的cookie對象中的集合對
    /// </summary>
    /// <param name="cookieName">cookie名稱</param>
    public static void RemoveCookie(string cookieName)
    {
        HttpCookie cookie = HttpContext.Current.Request.Cookies[cookieName];
        HttpResponse Response = HttpContext.Current.Response;
        if (cookie != null)
        {
            cookie.Values.Clear();
            cookie.Domain = ConfigHelper.SiteLoginDomain;
            cookie.Expires = DateTime.Now.AddDays(-10000d);
            Response.Cookies.Add(cookie);
        }
    }

    /// <summary>
    /// 移除指定名稱的cookie對象中的集合中的鍵值
    /// </summary>
    /// <param name="cookieName"></param>
    /// <param name="key"></param>
    public static void RemoveCookieKey(string cookieName, string key)
    {
        HttpCookie cookie = HttpContext.Current.Request.Cookies[cookieName];
        HttpResponse Response = HttpContext.Current.Response;
        if (cookie != null)
        {
            cookie.Values.Remove(key);
            Response.Cookies.Add(cookie);
        }
    }

    /// <summary>
    /// 移除指定名稱的cookie對象中的集合中的鍵值
    /// </summary>
    /// <param name="cookieName">cookie名稱</param>
    /// <param name="index">鍵值名</param>
    public static void RemoveCookieKey(string cookieName, int index)
    {
        HttpCookie cookie = HttpContext.Current.Request.Cookies[cookieName];
        HttpResponse Response = HttpContext.Current.Response;
        if (cookie != null)
        {
            cookie.Values.Remove(cookie.Values.GetKey(index));
            Response.Cookies.Add(cookie);
        }
    }
}