using System.Linq;
using Xunit;
using ytLive.ViewModels;

namespace ytLive.Tests;

/// <summary>The MIC bay is the first bay with real controls, and it is the creator's only audio
/// control — so its wiring deserves a guard that costs nothing to run.
///
/// <para>The fader speaks dB while the model stores linear gain (that mapping is covered by
/// GainDbTests); what this pins is that the dock actually binds the dB face and the MEASURED level,
/// that the VM exposes both, and that a mute still zeroes the ladder.</para></summary>
public class MicBayTests
{
    [Fact]
    public void The_mic_bay_binds_the_db_fader_and_the_measured_level()
    {
        var dock = SourceAssert.Text("Controls", "AudioDock.xaml");
        Assert.Contains("Value=\"{Binding MicVolumeDb, Mode=TwoWay}\"", dock);
        Assert.Contains("Level=\"{Binding MicMeterFraction}\"", dock);
        Assert.Contains("Text=\"{Binding MicVolumeDbLabel}\"", dock);
        Assert.Contains("Command=\"{Binding ToggleMicMuteCommand}\"", dock);

        // The fader's range is the scale's range, not an arbitrary slider span.
        Assert.Contains("Minimum=\"-60\" Maximum=\"6\"", dock);

        // The VM surface exists (no construction: this is a wiring check, not a behaviour one).
        var type = typeof(MainViewModel);
        foreach (var name in new[] { "MicVolumeDb", "MicVolumeDbLabel", "MicMeterFraction" })
            Assert.NotNull(type.GetProperty(name));

        // MicMuted is derived from the volume: mute is a fader position, so the ladder must follow.
        var audio = SourceAssert.Text("ViewModels", "MainViewModel.Audio.cs");
        Assert.Contains("MicMuted ? 0 :", audio);
        Assert.Contains("OnPropertyChanged(nameof(MicMeterFraction));", audio);
    }
}