using Xunit;
using ytLive.Helpers;
using ytLive.Services.Audio;
using ytLive.ViewModels;

namespace ytLive.Tests;

/// <summary>The GAME bay's badge must carry the gain the mixer actually applied — a duck indicator
/// that is not the real value is decoration, and this creator cannot hear whether it happened.
/// </summary>
public class GameBayTests
{
    [Fact]
    public void The_game_bay_binds_the_db_fader_and_a_real_duck_readout()
    {
        var dock = SourceAssert.Text("Controls", "AudioDock.xaml");
        Assert.Contains("Value=\"{Binding GameVolumeDb, Mode=TwoWay}\"", dock);
        // Desktop volume sits directly beneath its meter (creator's layout ruling).
        var desktopMeter = dock.IndexOf("Level=\"{Binding GameMeterFraction}\"", System.StringComparison.Ordinal);
        var desktopFader = dock.IndexOf("Value=\"{Binding GameVolumeDb, Mode=TwoWay}\"", System.StringComparison.Ordinal);
        Assert.True(desktopFader > desktopMeter, "the desktop fader belongs under the desktop ladder");
        Assert.Contains("Level=\"{Binding GameMeterFraction}\"", dock);
        Assert.Contains("Text=\"{Binding GameDuckLabel}\"", dock);
        Assert.Contains("Visibility=\"{Binding IsGameDucking, Converter={StaticResource BoolToVis}}\"", dock);

        foreach (var name in new[] { "GameVolumeDb", "GameVolumeDbLabel", "GameMeterFraction", "IsGameDucking", "GameDuckLabel" })
            Assert.NotNull(typeof(MainViewModel).GetProperty(name));

        // The badge's number is the mixer's ducker, not a copy: the duck is −12.04 dB by design,
        // and the label is produced from the live gain through the same dB scale as the faders.
        Assert.Equal(-12.04, GainDb.ToDb(AutoDucker.DuckGain), 1);
        Assert.Equal("-12.0 DUCK", GainDb.Label(GainDb.ToDb(AutoDucker.DuckGain)) + " DUCK");

        // And the mixer exposes that gain rather than hiding it.
        Assert.NotNull(typeof(AudioMixer).GetProperty("DuckGain"));
    }
}