using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using SheetMe.Designer.Services;
using SheetMe.Designer.ViewModels;

namespace SheetMe.Designer.Views;

/// <summary>미리보기 창 — 편집 크롬 없는 페이지 렌더(인쇄와 동일 비주얼) + 줌/인쇄.</summary>
public partial class PreviewWindow : Window
{
    #region Member Fields
    private readonly DesignerViewModel designer;
    private double zoom = 1.0;
    #endregion

    #region Constructors
    public PreviewWindow(DesignerViewModel designer)
    {
        this.designer = designer;
        InitializeComponent();
        BuildPages();
    }
    #endregion

    #region Methods
    private void BuildPages()
    {
        PagesHost.Children.Clear();
        foreach (var page in designer.Pages)
        {
            var frame = new Border
            {
                Background = page.PaperBrush,
                BorderBrush = System.Windows.Media.Brushes.LightGray,
                BorderThickness = new Thickness(1),
                Margin = new Thickness(0, 0, 0, 20),
                Child = PrintService.BuildPageVisual(page),
                Width = page.WidthDip,
                Height = page.HeightDip,
            };
            PagesHost.Children.Add(frame);
        }
    }

    private void OnPrint(object sender, RoutedEventArgs e)
    {
        try
        {
            PrintService.Print(designer, designer.Document.Title.Length > 0
                ? designer.Document.Title
                : designer.Document.FormId);
        }
        catch (Exception ex)
        {
            DialogService.Notify(DialogKind.Error, "오류", "인쇄 중 오류가 발생했습니다.", ex.Message, this);
        }
    }

    private void OnZoomIn(object sender, RoutedEventArgs e) => ApplyZoom(zoom * 1.15);

    private void OnZoomOut(object sender, RoutedEventArgs e) => ApplyZoom(zoom / 1.15);

    private void ApplyZoom(double value)
    {
        zoom = Math.Clamp(value, 0.25, 3.0);
        ZoomTransform.ScaleX = zoom;
        ZoomTransform.ScaleY = zoom;
        ZoomText.Text = $"{zoom * 100:0}%";
    }
    #endregion
}