Demka/Demka-2/Views/MainWindow.axaml.cs

using Avalonia.Controls;
using Avalonia.Markup.Xaml;
using System.Collections.ObjectModel;
using System.Linq;
using Demka_2.Use;
using System;
using Avalonia.Interactivity;
using DynamicData;

namespace Demka_2.Views;

public partial class MainWindow : Window
{
    private ObservableCollection<Service> Services { get; set; } = new ObservableCollection<Service>();
    private ObservableCollection<Service> FilteredServices { get; set; } = new ObservableCollection<Service>();

    private TextBox _searchBox;
    private ComboBox _discountFilter;
    private ListBox _serviceList;
    private TextBlock _serviceCountText;
    private TextBox _adminCodeBox;
    private Button _adminLoginButton;
    private StackPanel _adminControls;

    private const string AdminCode = "0000";
    private bool IsAdminMode = false;
    public MainWindow()
    {
        InitializeComponent();
        LoadServices();
        UpdateFilteredServices();
    }

    private void InitializeComponent()
    {
        AvaloniaXamlLoader.Load(this);
        _searchBox = this.FindControl<TextBox>("SearchBox");
        _discountFilter = this.FindControl<ComboBox>("DiscountFilter");
        _serviceList = this.FindControl<ListBox>("ServiceList");
        _serviceCountText = this.FindControl<TextBlock>("ServiceCountText");
        _adminCodeBox = this.FindControl<TextBox>("AdminCodeBox");
        _adminLoginButton = this.FindControl<Button>("AdminLoginButton");
        _adminControls = this.FindControl<StackPanel>("AdminControls");

        _serviceList.ItemsSource = FilteredServices;
        _searchBox.TextChanged += SearchBox_TextChanged;
        _discountFilter.SelectionChanged += DiscountFilter_SelectionChanged;
        _adminLoginButton.Click += AdminLoginButton_Click;
    }

    private void AdminLoginButton_Click(object? sender, EventArgs e)
    {
        if (_adminCodeBox.Text == AdminCode)
        {
            IsAdminMode = true;
            _adminControls.IsVisible = true;
        }
        else
        {
            IsAdminMode = false;
            _adminControls.IsVisible = false;
        }
    }

    private void OpenServiceFormWindow_Click(object sender, RoutedEventArgs e)
    {
        var selectedService = _serviceList.SelectedItem as Service;
        var serviceFormWindow = new ServiceFormWindow(selectedService, Services);
        serviceFormWindow.Show();
    }

    private void LoadServices()
    {
        /*using (var context = new AppDbContext())
        {
            var services = context.Services.ToList();
            foreach (var service in services)
            {
                Services.Add(service);
            }

        }*/

        Services.Add(new Service { Name = "Услуга 1", Price = 100, Duration = 30, Discount = 0 });
        Services.Add(new Service { Name = "Услуга 2", Price = 200, Duration = 60, Discount = 10 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 40 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 60 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 80 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });
        Services.Add(new Service { Name = "Услуга 3", Price = 150, Duration = 45, Discount = 20 });

    }

    private void UpdateFilteredServices()
    {
        var query = Services.AsEnumerable();

        if (!string.IsNullOrWhiteSpace(_searchBox.Text))
        {
            string searchQuery = _searchBox.Text.ToLower();
            query = query.Where(service =>
                service.Name.ToLower().Contains(searchQuery) ||
                service.Description.ToLower().Contains(searchQuery));
        }

        if (_discountFilter.SelectedItem is TextBlock selected && selected.Text != "Все")
        {
            var range = ParseDiscountRange(selected.Text);
            if (range != null)
            {
                query = query.Where(service =>
                    service.Discount >= range.Value.min && service.Discount < range.Value.max);
            }
        }

        FilteredServices.Clear();
        foreach (var service in query)
        {
            FilteredServices.Add(service);
        }

        _serviceCountText.Text = $"{FilteredServices.Count} из {Services.Count}";
    }

    private void SearchBox_TextChanged(object? sender, EventArgs e)
    {
        UpdateFilteredServices();
    }

    private void DiscountFilter_SelectionChanged(object? sender, SelectionChangedEventArgs e)
    {
        UpdateFilteredServices();
    }

    public async void ShowMessage(string message)
    {
        var messageBox = new Window
        {
            Title = "Сообщение",
            Content = message,
            Width = 300,
            Height = 150,
            WindowStartupLocation = WindowStartupLocation.CenterScreen
        };

        var okButton = new Button { Content = "ОК" };
        okButton.Click += (s, e) => messageBox.Close();
        messageBox.Content = new StackPanel
        {
            Children = { new TextBlock { Text = message }, okButton }
        };

        await messageBox.ShowDialog(this);
    }

    private (decimal min, decimal max)? ParseDiscountRange(string rangeText)
    {
        return rangeText switch
        {
            "0-5%" => (0, 5),
            "5-15%" => (5, 15),
            "15-30%" => (15, 30),
            "30-70%" => (30, 70),
            "70-100%" => (70, 100),
            _ => null,
        };
    }
}