biblioteka-standartnyh-izdeliy/dotnet/src/StandardProducts.App/MainWindow.xaml.cs

using System.IO;
using System.Windows;
using System.Windows.Controls;
using Microsoft.Win32;
using StandardProducts.Core.Data;
using StandardProducts.Core.Gost;
using StandardProducts.Core.IO;
using StandardProducts.Core.Models;

namespace StandardProducts.App;

public partial class MainWindow : Window
{
    private readonly CatalogDatabase _database;
    private readonly ProductRepository _repository;

    public MainWindow()
    {
        InitializeComponent();

        var databasePath = Path.Combine(
            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
            "StandardProducts",
            "catalog.db");

        _database = new CatalogDatabase(databasePath);
        _repository = new ProductRepository(_database);

        SearchBox.TextChanged += SearchBox_TextChanged;
        RefreshList();
    }

    private void RefreshList()
    {
        try
        {
            var products = _repository.Search(SearchBox.Text, limit: 1000);
            ProductsGrid.ItemsSource = products;
            StatusText.Text = $"Найдено: {products.Count} · База: {_database.DatabasePath}";
        }
        catch (Exception exception)
        {
            ShowError(exception);
        }
    }

    private void SearchBox_TextChanged(object sender, TextChangedEventArgs e) => RefreshList();

    private void SeedGost_Click(object sender, RoutedEventArgs e)
    {
        try
        {
            var count = Gost7805.Seed(_repository);
            RefreshList();
            StatusText.Text = $"Загружено изделий ГОСТ 7805-70: {count}";
        }
        catch (Exception exception)
        {
            ShowError(exception);
        }
    }

    private void Import_Click(object sender, RoutedEventArgs e)
    {
        var dialog = new OpenFileDialog
        {
            Title = "Импорт каталога",
            Filter = "JSON (*.json)|*.json|Все файлы (*.*)|*.*",
        };

        if (dialog.ShowDialog(this) != true)
        {
            return;
        }

        try
        {
            var count = JsonCatalog.Import(_repository, dialog.FileName);
            RefreshList();
            StatusText.Text = $"Импортировано записей: {count}";
        }
        catch (Exception exception)
        {
            ShowError(exception);
        }
    }

    private void Export_Click(object sender, RoutedEventArgs e)
    {
        var dialog = new SaveFileDialog
        {
            Title = "Экспорт каталога",
            Filter = "JSON (*.json)|*.json",
            FileName = "catalog.json",
        };

        if (dialog.ShowDialog(this) != true)
        {
            return;
        }

        try
        {
            var count = JsonCatalog.Export(_repository.List(), dialog.FileName);
            StatusText.Text = $"Экспортировано записей: {count} → {dialog.FileName}";
        }
        catch (Exception exception)
        {
            ShowError(exception);
        }
    }

    private void Delete_Click(object sender, RoutedEventArgs e)
    {
        if (ProductsGrid.SelectedItem is not Product product)
        {
            MessageBox.Show(
                this,
                "Выберите изделие в таблице.",
                "Удаление",
                MessageBoxButton.OK,
                MessageBoxImage.Information);
            return;
        }

        var answer = MessageBox.Show(
            this,
            $"Удалить «{product.Designation}»?",
            "Подтверждение",
            MessageBoxButton.YesNo,
            MessageBoxImage.Question);

        if (answer != MessageBoxResult.Yes)
        {
            return;
        }

        try
        {
            _repository.Delete(product.Designation);
            RefreshList();
            StatusText.Text = $"Удалено: {product.Designation}";
        }
        catch (Exception exception)
        {
            ShowError(exception);
        }
    }

    private void ProductsGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        AttributesText.Text = ProductsGrid.SelectedItem is Product product
            ? string.Join(
                Environment.NewLine,
                product.Attributes.Select(pair => $"{pair.Key}: {pair.Value}"))
            : string.Empty;
    }

    private void ShowError(Exception exception) =>
        MessageBox.Show(this, exception.Message, "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);

    protected override void OnClosed(EventArgs e)
    {
        _database.Dispose();
        base.OnClosed(e);
    }
}