using System.Reflection;
using Xunit;
using ytLive.ViewModels;

namespace ytLive.Tests;

/// <summary>The scoreboard's look and its eight fact switches live in the LAYER PROPERTIES, and the
/// panel must use the app's widgets — a hand-painted control is the TASK 58/63 defect, and the
/// guard that catches it is here because the type-based sweep cannot see a bespoke picker.</summary>
public class ScoreboardPropertiesTests
{
    [Fact]
    public void The_scoreboard_properties_are_themed_controls_bound_to_the_layer_surface()
    {
        var panel = SourceAssert.Text("Controls", "LeftPanel.xaml");

        // Gated on the selected layer being a scoreboard.
        Assert.Contains("SelectedElement.IsScoreboard", panel);

        // Signed out: the block is inert with a one-line explanation — EXCEPT in a DEBUG build, where
        // CanUseScoreboard is true so the strip can be previewed without an account.
        var block = panel[panel.IndexOf("Scoreboard config", System.StringComparison.Ordinal)..];
        block = block[..block.IndexOf("<!-- Countdown config -->", System.StringComparison.Ordinal)];
        Assert.Contains("IsEnabled=\"{Binding CanUseScoreboard}\"", block);
        Assert.Contains("Sign in to YouTube to use the scoreboard.", block);
        Assert.Contains("CanUseScoreboard, Converter={StaticResource InverseBoolToVis}", block);

        // Defaults the creator asked for, and readouts that actually move.
        Assert.Contains("Background", block);
        Assert.DoesNotContain("Background plate", block);
        Assert.Contains("ScoreboardFontSizeLabel", block);      // "24 px", not a bare number

        var vm = SourceAssert.Text("ViewModels", "MainViewModel.Scoreboard.cs");
        Assert.Contains("OnPropertyChanged(nameof(ScoreboardBackgroundOpacity));", vm);
        Assert.Contains("OnPropertyChanged(nameof(ScoreboardFontSize));", vm);

        // Dev-only labels are ORANGE, so a development affordance cannot pass for product.
        Assert.Contains("Simulate (dev)", block);
        Assert.Contains("Brush.Attention", block);

        // Scroll speed: a real dial, persisted, with its range owned by the presenter.
        Assert.Contains("ScoreboardScrollSpeed", block);
        Assert.Contains("Minimum=\"20\" Maximum=\"200\"", block);
        Assert.Contains("Scoreboard.ScrollSpeed", SourceAssert.Text("Services", "LayoutStore.Settings.cs"));

        // The master switch sits in the same panel: off hides the strip and stops the polling.
        Assert.Contains("ScoreboardEnabled", panel);

        // The eight fact switches.
        foreach (var binding in new[]
                 {
                     "ScoreboardShowSubscribers", "ScoreboardShowWatchHours", "ScoreboardShowSuperChats",
                     "ScoreboardShowNewMembers", "ScoreboardShowMilestones", "ScoreboardShowLastMember",
                     "ScoreboardShowLastSuperChat", "ScoreboardShowLastGift",
                 })
            Assert.Contains(binding, panel);

        // Look controls: text colour, plate colour, plate opacity, text size.
        foreach (var binding in new[]
                 {
                     "ScoreboardTextColor", "ScoreboardBackgroundColor",
                     "ScoreboardBackgroundOpacity", "ScoreboardFontSize",
                 })
            Assert.Contains(binding, panel);

        // Theme widgets only: colour pickers use YtComboBox and the property-panel toggles use
        // the themed pill-switch style.
        Assert.Contains("Style=\"{StaticResource YtComboBox}\"", block);
        Assert.Contains("Style=\"{StaticResource PropertyPillCheck}\"", block);
        Assert.DoesNotContain("ContextMenu", block);

        // The VM surface exists for every binding above (a typo would bind to nothing silently).
        var type = typeof(MainViewModel);
        foreach (var name in new[]
                 {
                     "ScoreboardTextColor", "ScoreboardBackgroundColor", "ScoreboardBackgroundOpacity",
                     "ScoreboardFontSize", "ScoreboardColorOptions", "ScoreboardShowSubscribers",
                     "ScoreboardEnabled", "CanUseScoreboard", "ScoreboardScrollSpeed",
                 })
            Assert.NotNull(type.GetProperty(name));
    }
}