using System.Globalization;
using System.Windows;
using System.Windows.Media;
using SheetMe.Core.Serialization;
using SheetMe.Designer.ViewModels;

using SheetMe.Designer.Services;

namespace SheetMe.Designer.Views;

/// <summary>
/// 폰트 일괄 변경 대화상자 — 레거시 frmFontManager 이식.
/// 문서 전체 (타입·글꼴·크기·스타일) 집계 → 선택 조합 또는 전체에 새 글꼴 일괄 적용(Undo 1스텝).
/// </summary>
public partial class FontManagerDialogView : Window
{
    #region Member Fields
    private readonly DesignerViewModel designer;
    #endregion

    #region Constructors
    public FontManagerDialogView(DesignerViewModel designer)
    {
        this.designer = designer;
        InitializeComponent();
        FamilyBox.ItemsSource = Fonts.SystemFontFamilies
            .Select(f => f.FamilyNames.Values.FirstOrDefault() ?? f.Source)
            .Distinct()
            .OrderBy(name => name, StringComparer.CurrentCulture)
            .ToList();
        FamilyBox.Text = "굴림";
        Reload();
    }
    #endregion

    #region Methods
    private void Reload()
    {
        GroupList.ItemsSource = designer.CollectFontUsage();
    }

    private void OnApplySelected(object sender, RoutedEventArgs e)
        => Apply(GroupList.SelectedItems.Cast<FontUsageGroup>().ToList());

    private void OnApplyAll(object sender, RoutedEventArgs e)
        => Apply(GroupList.Items.Cast<FontUsageGroup>().ToList());

    private void Apply(List<FontUsageGroup> targets)
    {
        if (targets.Count == 0)
        {
            DialogService.Notify(DialogKind.Warning, "폰트 일괄 변경", "변경할 조합을 선택하세요.", owner: this);
            return;
        }
        var family = FamilyBox.Text.Trim();
        if (family.Length == 0)
        {
            DialogService.Notify(DialogKind.Warning, "폰트 일괄 변경", "글꼴명을 입력하세요.", owner: this);
            return;
        }
        if (!double.TryParse(SizeBox.Text.Trim(), NumberStyles.Number, CultureInfo.InvariantCulture, out var sizePt)
            || sizePt <= 0 || sizePt > 200)
        {
            DialogService.Notify(DialogKind.Warning, "폰트 일괄 변경", "크기(pt)를 올바르게 입력하세요.", owner: this);
            return;
        }

        var newFont = new LegacyFont
        {
            Family = family,
            SizePt = sizePt,
            Bold = BoldBox.IsChecked == true,
            Italic = ItalicBox.IsChecked == true,
            Underline = UnderlineBox.IsChecked == true,
        };
        var changed = designer.ApplyFontBulk(targets, newFont);
        ResultText.Text = $"{changed}개 컨트롤 변경됨";
        Reload();
    }
    #endregion
}