using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;

namespace ytLive.Controls;

/// <summary>
/// App Settings as a right-edge pull-out (creator ruling 2026-11-01). Hosted by
/// <see cref="PreviewPane"/>'s drawer stack and opened by the gear rail tab, exactly like Stream
/// Settings / YPP / Socials / TEST.
///
/// <para>Born from the modal overlay: that shell was MaxHeight 700, so once the section list grew
/// the bottom options were clipped and unreachable — including the zoom shape the creator was
/// looking for. A drawer is the height of the preview, so the list can grow without a second
/// scroll decision to get wrong.</para>
/// </summary>
public partial class SettingsDrawer : UserControl
{
    public SettingsDrawer()
    {
        InitializeComponent();
#if DEBUG
        // Development affordances are added at runtime, never declared in XAML: the panel is
        // excluded from the Release compile (ytLive.csproj), so this line is the only reference.
        DeveloperPanelHost.Children.Add(new DeveloperPanel());
#endif
    }

    /// <summary>Is the enlarged brand-logo preview showing? Test seam — a Popup is a separate
    /// window, so nothing else can observe it.</summary>
    internal bool IsBrandLogoPreviewOpen => BrandLogoPreviewPopup.IsOpen;

    /// <summary>The thumbnail is hidden when no image is set (see the XAML), so there is nothing to
    /// open in that case — no empty frame can appear.</summary>
    internal void OpenBrandLogoPreview() => BrandLogoPreviewPopup.IsOpen = true;

    internal void CloseBrandLogoPreview() => BrandLogoPreviewPopup.IsOpen = false;

    /// <summary>Hover opens the enlargement. Nothing to show when no image is set, so the
    /// thumbnail simply does nothing in that case.</summary>
    private void BrandLogoThumb_MouseEnter(object sender, MouseEventArgs e)
        => BrandLogoPreviewPopup.IsOpen = true;

    /// <summary>Leaving the thumbnail closes it — unless the pointer walked onto the popup
    /// itself, where it stays put so the creator can look closely.</summary>
    private void BrandLogoThumb_MouseLeave(object sender, MouseEventArgs e)
    {
        if (BrandLogoPreviewPopup.Child?.IsMouseOver == true) return;
        BrandLogoPreviewPopup.IsOpen = false;
    }

    /// <summary>A click collapses the enlargement — the explicit "enough, thanks" gesture.</summary>
    private void BrandLogoThumb_Click(object sender, MouseButtonEventArgs e)
        => BrandLogoPreviewPopup.IsOpen = false;

    private void BrandLogoPreviewPopup_MouseLeave(object sender, MouseEventArgs e)
        => BrandLogoPreviewPopup.IsOpen = false;
}