teamsiso/src/TeamsISO.App.WinUI/Views/MainWindow.xaml.cs

using Microsoft.UI;
using Microsoft.UI.Windowing;
using Microsoft.UI.Xaml;
using TeamsISO.App.WinUI.Models;
using Windows.Graphics;
using Windows.UI;

namespace TeamsISO.App.WinUI.Views;

public sealed partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        Title = "TeamsISO";

        // ── Custom title bar wiring ───────────────────────────────────────
        // ExtendsContentIntoTitleBar=true tells WindowsAppSDK to draw the
        // window chrome over our content instead of reserving a Windows-default
        // caption strip. SetTitleBar marks AppTitleBar as the drag region —
        // clicks on it route to the system drag handler, everything else stays
        // hit-testable as a normal XAML element. The system min/max/close
        // buttons render on top of the right edge regardless; we just provide
        // their colors so they match our palette.
        ExtendsContentIntoTitleBar = true;
        SetTitleBar(AppTitleBar);

        AppWindow.TitleBar.ButtonBackgroundColor = Colors.Transparent;
        AppWindow.TitleBar.ButtonInactiveBackgroundColor = Colors.Transparent;
        AppWindow.TitleBar.ButtonHoverBackgroundColor = Color.FromArgb(0xFF, 0x33, 0x34, 0x3A);
        AppWindow.TitleBar.ButtonPressedBackgroundColor = Color.FromArgb(0xFF, 0x3F, 0x3F, 0x47);
        AppWindow.TitleBar.ButtonForegroundColor = Color.FromArgb(0xFF, 0xF4, 0xF4, 0xF6);
        AppWindow.TitleBar.ButtonHoverForegroundColor = Colors.White;

        // ── Initial size & position ───────────────────────────────────────
        // 1280x780 matches the WPF host's default — fits comfortably on a
        // 14-inch laptop while giving the participants table 600+ pixels
        // of vertical breathing room.
        AppWindow.Resize(new SizeInt32(1280, 780));

        // ── Mock data wiring (interim) ────────────────────────────────────
        // Until ParticipantViewModel binds in the engine wiring commit, the
        // table is populated from a static sample list so the visual design
        // can be validated end-to-end against representative data.
        ParticipantsRepeater.ItemsSource = MockParticipant.Sample();
    }

    /// <summary>
    /// Cycle the active theme between Dark and Light. The actual swap target
    /// is the window's root visual element — RequestedTheme on that element
    /// propagates the {ThemeResource} swap across the whole tree, with no
    /// flicker. The system title-bar buttons aren't part of the visual tree,
    /// so their colors are recomputed inline.
    ///
    /// Persistence to UIPreferences.Theme happens in the view-model wiring
    /// commit (the WinUI host doesn't yet share UIPreferences with the WPF
    /// host; both will once the WinUI host owns the .NET startup).
    /// </summary>
    private void OnThemeToggleClick(object sender, RoutedEventArgs e)
    {
        if (Content is FrameworkElement root)
        {
            var next = root.ActualTheme == ElementTheme.Dark
                ? ElementTheme.Light
                : ElementTheme.Dark;
            root.RequestedTheme = next;

            // Title-bar system buttons read from AppWindow.TitleBar directly,
            // not from the XAML resource dictionary, so we set them inline
            // for both themes. Dark-mode chrome lands on near-white glyphs;
            // light-mode chrome lands on near-black glyphs.
            if (next == ElementTheme.Dark)
            {
                AppWindow.TitleBar.ButtonForegroundColor = Color.FromArgb(0xFF, 0xF4, 0xF4, 0xF6);
                AppWindow.TitleBar.ButtonHoverBackgroundColor = Color.FromArgb(0xFF, 0x33, 0x34, 0x3A);
                AppWindow.TitleBar.ButtonPressedBackgroundColor = Color.FromArgb(0xFF, 0x3F, 0x3F, 0x47);
                ThemeToggleIcon.Glyph = ""; // sun
            }
            else
            {
                AppWindow.TitleBar.ButtonForegroundColor = Color.FromArgb(0xFF, 0x0A, 0x0A, 0x0A);
                AppWindow.TitleBar.ButtonHoverBackgroundColor = Color.FromArgb(0xFF, 0xEC, 0xEE, 0xF1);
                AppWindow.TitleBar.ButtonPressedBackgroundColor = Color.FromArgb(0xFF, 0xE0, 0xE3, 0xE7);
                ThemeToggleIcon.Glyph = ""; // moon
            }
        }
    }
}