using System;
using System.Data;
using System.Configuration;
using System.Collections.Generic;
using System.Web;
using System.Data.OleDb;
using System.Collections;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace MyWeb
{
    public class security
    {
        public string pwStrength { get; set; }

        public security()
        {
            pwStrength = ConfigurationManager.AppSettings["pwStrength"].ToString();
        }

        public string PasswordValidator()
        {
            switch (pwStrength) {
                case "1":
                    return "^(?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{6,}$";
                case "2":
                    return "^(?!.*(.)\\1)(?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{6,}$";
                case "3":
                    return "^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$%~^&*+-]).{12,}$";
                default:
                    return "";
            }
        }
        public string PasswordNotice()
        {
            switch (pwStrength) {
                case "1":
                    return "密碼長度必需至少6位數，至少需包含數字、英文大小寫";
                case "2":
                    return "密碼長度必需至少6個字元且至少需包含數字、英文大小寫，不得有2個以上的連續字元";
                case "3":
                    return "密碼長度必需至少12個字元且至少需包含數字、字符(如：!@#$%)、英文大小寫";
                default:
                    return "";
            }
        }
    }
}