AvaloniaCaptcha/Captcha/ViewModels/MainWindowViewModel.cs

using Avalonia.Controls;
using ReactiveUI;
using Captcha.Views;
using System.Dynamic;
using Tmds.DBus.Protocol;
using System.Collections.Generic;
using System.Security.Cryptography.X509Certificates;
using Avalonia.Controls.Shapes;
using Avalonia.Media;
using Avalonia;
using System;
using System.Windows.Input;
using Avalonia.Data;
using Avalonia.Threading;
using System.Threading;

namespace Captcha.ViewModels
{ 
    public class MainWindowViewModel : ViewModelBase
    {   
        UserControl us = new Autorize();
        public UserControl US
        {
            get => us;
            set => this.RaiseAndSetIfChanged(ref us, value);
        }
public CalculatorViewModel CalcVM { get => calcVM; set => calcVM = value; }
        CalculatorViewModel calcVM = new CalculatorViewModel();
        public void ToCalc()
        {
            US = new Calculator();
        }
        DispatcherTimer distimer = new DispatcherTimer();
        string login = "";
        string password = "";
        string capcha = "";
        string check;
        int count = 0;
        bool visa = true;
        bool visc = false;
        bool on = true;
        public string Login
        {
            get => login;
            set => this.RaiseAndSetIfChanged(ref login, value);
        }
        public string Password
        {
            get => password;
            set => this.RaiseAndSetIfChanged(ref password, value);
        }
        public string Capcha
        {
            get => capcha;
            set => this.RaiseAndSetIfChanged(ref capcha, value);
        }
        Canvas can;
        public Canvas Can
        {
            get => can;
            set => this.RaiseAndSetIfChanged(ref can, value);
        }
        public void CreateCaptcha() // метод для создания Canvas, внутри которого рандомно генерируются линии
        {
            SolidColorBrush color = new SolidColorBrush(Color.FromRgb(155, 155, 155));
            Canvas canvas = new Canvas()
            {
                Width = 210,
                Height = 100,
                Background = color
            };
            Random rnd = new Random();
            TextBlock text = new TextBlock()
            {
                Text = Convert.ToString(rnd.Next(0, 9)),
                FontSize = 36,
                Foreground = Brushes.Black,
                Padding = new Thickness(20)
            };
            TextBlock text1 = new TextBlock()
            {
                Text = Convert.ToString(Convert.ToChar(rnd.Next(97, 123))),
                FontSize = 36,
                Foreground = Brushes.Black,
                Padding = new Thickness(40)
            };
            TextBlock text2 = new TextBlock()
            {
                Text = Convert.ToString(rnd.Next(0, 20)),
                FontSize = 36,
                Foreground = Brushes.Black,
                Padding = new Thickness(60,10),
            };
            TextBlock text3 = new TextBlock()
            {
                Text = Convert.ToString(Convert.ToChar(rnd.Next(97, 123))),
                FontSize = 36,
                Foreground = Brushes.Black,
                Padding = new Thickness(100,2)
            };
            TextBlock text4 = new TextBlock()
            {
                Text = Convert.ToString(rnd.Next(0, 9)),
                FontSize = 36,
                Foreground = Brushes.Black,
                Padding = new Thickness(130,10)
            };
            TextBlock text5 = new TextBlock()
            {
                Text = Convert.ToString(Convert.ToChar(rnd.Next(65, 91))),
                FontSize = 36,
                Foreground = Brushes.Black,
                Padding = new Thickness(150,1)
            };
            TextBlock text6 = new TextBlock()
            {
                Text = Convert.ToString(Convert.ToChar(rnd.Next(97, 123))),
                FontSize = 36,
                Foreground = Brushes.Black,
                Padding = new Thickness(170,-3)
            };
            canvas.Children.Add(text);
            canvas.Children.Add(text1);
            canvas.Children.Add(text2);
            canvas.Children.Add(text3);
            canvas.Children.Add(text4);
            canvas.Children.Add(text5);
            canvas.Children.Add(text6);
            check = text.Text + text1.Text + text2.Text + text3.Text + text4.Text + text5.Text + text6.Text;
            for (int i = 0; i <= 10; i++)
            {
                Line line = new Line()
                {
                    StartPoint = new Point(rnd.Next(220), rnd.Next(100)),
                    EndPoint = new Point(rnd.Next(220), rnd.Next(100)),
                    Stroke = new SolidColorBrush(Color.FromRgb(Convert.ToByte(rnd.Next(0, 155)), Convert.ToByte(rnd.Next(0, 155)), Convert.ToByte(rnd.Next(0, 155)))),
                    StrokeThickness = 2
                };
                canvas.Children.Add(line);
            }
            Can = canvas;
        }
        public bool VisibilityAuto
        {
            get => visa;
            set => this.RaiseAndSetIfChanged(ref visa, value);

        }
        public bool VisibilityCaptcha
        {
            get => visc;
            set => this.RaiseAndSetIfChanged(ref visc, value);

        }
        public bool Enabled
        {
            get => on;
            set => this.RaiseAndSetIfChanged(ref on, value);
        }
        public void Check()
        {
            if (Login != Models.UserClass.Login || Password != Models.UserClass.Login)
            {
                count+=1;
            }
            else
            {
                ToCalc();
            }
            if (count == 1)
            {
                VisibilityCaptcha = true;
                VisibilityAuto = false;
                CreateCaptcha(); 
                
            }
        }
        public void CheckCaptcha()
        {
            if (Capcha != check || Login != Models.UserClass.Login || Password != Models.UserClass.Login)
            {
                count++;
            }
            else
            {
                ToCalc();
            }
            if(count > 1)
            {
                Enabled = false;
                VisibilityCaptcha = false;
                Login = "";
                Password = "";
                Capcha = "";
                distimer.Interval = new TimeSpan(0, 0, 10);
                distimer.Tick += new EventHandler(TimerEnd);
                distimer.Start();
            }
        }
        public void TimerEnd(object sender, EventArgs e)
        {
            Enabled = true;
            CreateCaptcha();
            VisibilityCaptcha = true;
            distimer.Stop();
        }
    }
}