namespace YLErp.Web.Models
{
    /// <summary>
    /// 天风证券单点登录
    /// </summary>
    public class TianFengSSOHandler
    {
        public static string GetSsoLoginUrl(string serviceUrl)
        {
            return SsoLoginConfig.SSO_Url + "/login?service=" + serviceUrl;
        }

        public static string GetSsoLogoutUrl(string serviceUrl)
        {
            return SsoLoginConfig.SSO_Url + "/logout?service=" + serviceUrl;
        }

        readonly IHttpClientFactory _httpClientFactory;

        public TianFengSSOHandler(IHttpClientFactory httpClientFactory)
        {
            _httpClientFactory = httpClientFactory ?? throw new ArgumentNullException(nameof(httpClientFactory));
        }

        /// <summary>
        /// 验证令牌,返回用户名
        /// </summary>
        public async Task<string> ValidateAsync(string ticket, string serviceUrl)
        {
            // 如果Request.Url的值带参数，需要对这个url先进过编码，这里的service的值应该跟上一步跳转到SSO时service的值一致（注意需要去掉service中的ticket参数）
            // url的值，例如：http://sso.liyong.com:8280/sso/validate?ticket=ST-3-QrZ3WmuPOX94L4og7vbQ-cas&service=http://localhost/test.aspx
            var url = SsoLoginConfig.SSO_Url + "/validate?ticket=" + ticket + "&service=" + serviceUrl;

            LogFactory.GetLogger("天风单点登录").Info("sso validate url:" + url);

            var client = _httpClientFactory.CreateClient();

            var response = await client.GetStringAsync(url);

            var reader = new StringReader(response);

            var isOk = reader.ReadLine();

            if (isOk.Trim() != "yes")
            {
                throw new ServiceException("[单点登录]令牌验证失败,ticket:" + ticket);
            }

            return reader.ReadLine();
        }
    }

    public class SsoLoginResult
    {
        public string userName;

        public string userTicket;

        public bool redirect;
    }
}