Authandreg_workNine/RegAuth/ViewModels/ValidViewModel.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text.RegularExpressions;
using Microsoft.EntityFrameworkCore;
using ReactiveUI;
using RegAuth.Models;

namespace RegAuth.ViewModels
{
    internal class validViewModel : ViewModelBase
    {
        List<User> _listUsers;
        public List<User> SortUsers { get => _listUsers; set => this.RaiseAndSetIfChanged(ref _listUsers, value); }
        public string NameValidate(string name)
        {
            SortUsers = MainWindowViewModel.myConnection.Users.Where(u => u.Login == name).ToList();
            if (string.IsNullOrEmpty(name))
            {
                return "Çàïîëíèòå ëîãèí";
            }
            if (SortUsers.Any())
            {
                return "Ëîãèí çàðåçåðâèðîâàí äðóãèì ïîëüçîâàòåëåì.";
            }
            return string.Empty;
        }

        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
        }




    }
}