namespace ETD.Data
{
    using System;
    using System.Text.RegularExpressions;

    public class RegExp
    {
        /// <summary>
        /// 判断字符串是否是yy-mm-dd字符串
        /// </summary>
        /// <param name="str">待判断字符串</param>
        /// <returns>判断结果</returns>
        public static bool IsDateString(string str)
        {
            return Regex.IsMatch(str, @"(\d{4})-(\d{1,2})-(\d{1,2})");
        }

        /// <summary>
        /// 检测是否符合email格式
        /// </summary>
        /// <param name="strEmail">要判断的email字符串</param>
        /// <returns>判断结果</returns>
        public static bool IsEmail(string strEmail)
        {
            return Regex.IsMatch(strEmail, @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
        }

        /// <summary>
        /// 判断是否是正常的ip格式
        /// </summary>
        /// <param name="ipAdress">验证字符串</param>
        /// <returns></returns>
        public static bool IsIP(string ipAdress)
        {
            return Regex.IsMatch(ipAdress, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");
        }

        public static bool IsJsonSafety(string s)
        {
            string text1 = Regex.Replace(s.Replace("%20", " "), @"\s", " ");
            string text2 = @"select |insert |delete from |count\(|drop table|update |truncate |asc\(|mid\(|char\(|xp_cmdshell|exec master|net localgroup administrators|net user|\'| or ";
            return !Regex.IsMatch(text1, text2, RegexOptions.IgnoreCase);
        }

        /// <summary>
        /// 判断给定的字符串(strNumber)是否是数值型
        /// </summary>
        /// <param name="strNumber">要确认的字符串</param>
        /// <returns>是则返加true 不是则返回 false</returns>
        public static bool IsNumber(string strNumber)
        {
            return new Regex(@"^([0-9])[0-9]*(\.\w*)?$").IsMatch(strNumber);
        }

        /// <summary>
        /// 判断是否是qq号码
        /// </summary>
        /// <param name="str">要验证的字符串</param>
        /// <returns></returns>
        public static bool IsQQ(string str)
        {
            return Regex.IsMatch(str, "[1-9][0-9]{4,}");
        }

        /// <summary>
        /// 检测是否有Sql危险字符
        /// </summary>
        /// <param name="str">要判断字符串</param>
        /// <returns>判断结果</returns>
        public static bool IsSafeSqlString(string str)
        {
            return !Regex.IsMatch(str, @"[-|;|,|\/|\(|\)|\[|\]|\}|\{|%|@|\*|!|\']");
        }

        public static bool IsSafety(string s)
        {
            string text1 = Regex.Replace(s.Replace("%20", " "), @"\s", " ");
            string text2 = "select |insert |delete from |count\\(|drop table|update |truncate |asc\\(|mid\\(|char\\(|xp_cmdshell|exec master|net localgroup administrators|:|net user|\"|\\'| or ";
            return !Regex.IsMatch(text1, text2, RegexOptions.IgnoreCase);
        }

        /// <summary>
        /// 判断是否是时间格式
        /// </summary>
        /// <param name="strTime">判断字符串</param>
        /// <returns></returns>
        public static bool IsTimeString(string strTime)
        {
            return Regex.IsMatch(strTime, "^((([0-1]?[0-9])|(2[0-3])):([0-5]?[0-9])(:[0-5]?[0-9])?)$");
        }

        /// <summary>
        /// 判断是否是小数
        /// </summary>
        /// <param name="str">要验证的字符串</param>
        /// <returns></returns>
        public static bool IsValidDecimal(string str)
        {
            return Regex.IsMatch(str, @"[0].\d{1,2}|[1]");
        }

        /// <summary>
        /// 判断是否是电话号码格式
        /// </summary>
        /// <param name="str">要验证的字符串</param>
        /// <returns></returns>
        public static bool IsValidTel(string str)
        {
            return Regex.IsMatch(str, @"(\d+-)?(\d{4}-?\d{7}|\d{3}-?\d{8}|^\d{7,8})(-\d+)?");
        }
    }
}