Authandreg_workNine/RegAuth/ViewModels/ValidViewModel.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text.RegularExpressions;
using ReactiveUI;

namespace RegAuth.ViewModels
{
    internal class validViewModel : ViewModelBase
    {
        //public bool IsValidPassword(string password)
        //{
        //    // Ïðîâåðêà, ÷òî ïàðîëü íå íà÷èíàåòñÿ ñ öèôðû
        //    if (string.IsNullOrEmpty(password) || char.IsDigit(password[0]))
        //    {
        //        return false;
        //    }

        //    // Ðåãóëÿðíîå âûðàæåíèå äëÿ ïðîâåðêè òðåáîâàíèé ê ïàðîëþ
        //    string pattern = @"^(?=(?:[^A-Z]*[A-Z]){2})(?=(?:[^a-z]*[a-z]){3})(?=(?:[^0-9]*[0-9]){2})[A-Za-z0-9]{8,}$";
        //    return Regex.IsMatch(password, pattern);
        //}

        public string ValidatePassword(string password)
        {
            if (string.IsNullOrEmpty(password))
            {
                return "Ïàðîëü íå ìîæåò áûòü ïóñòûì.";
            }

            if (char.IsDigit(password[0]))
            {
                return "Ïàðîëü íå äîëæåí íà÷èíàòüñÿ ñ öèôðû.";
            }

            int upperCaseCount = Regex.Matches(password, "[A-Z]").Count;
            int lowerCaseCount = Regex.Matches(password, "[a-z]").Count;
            int digitCount = Regex.Matches(password, "[0-9]").Count;

            if (upperCaseCount < 2)
            {
                return "Ïàðîëü äîëæåí ñîäåðæàòü íå ìåíåå 2 çàãëàâíûõ ëàòèíñêèõ ñèìâîëîâ.";
            }

            if (lowerCaseCount < 3)
            {
                return "Ïàðîëü äîëæåí ñîäåðæàòü íå ìåíåå 3 ñòðî÷íûõ ëàòèíñêèõ ñèìâîëîâ.";
            }

            if (digitCount < 2)
            {
                return "Ïàðîëü äîëæåí ñîäåðæàòü íå ìåíåå 2 öèôð.";
            }

            if (password.Length < 8)
            {
                return "Ïàðîëü äîëæåí ñîäåðæàòü íå ìåíåå 8 ñèìâîëîâ.";
            }

            return string.Empty; // Åñëè îøèáîê íåò
        }




    }
}