using System;
using System.Text.RegularExpressions;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using Xunit;
using ytLive.Helpers;

namespace ytLive.Tests;

/// <summary>
/// Build attribution (2026-09-04, after takes 3–6 could not be pinned to a binary):
/// every build stamps a fresh GUID (ytLive.csproj GenerateBuildStamp), shown as the
/// wordmark superscript and logged at startup. The unit pins the stamp shape; the
/// RealApp test proves the wordmark ACTUALLY displays it (XAML wiring, live visual
/// tree) — a stamp nobody can see would not have ended the guessing.
/// </summary>
public sealed class BuildStampTests
{
    [Fact]
    public void Stamp_IsAFreshHexIdAndParsableTimestamp()
    {
        Assert.Matches(new Regex("^[0-9a-f]{8}$"), BuildStamp.Id);
        Assert.True(DateTime.TryParseExact(BuildStamp.BuiltLocal, "yyyy-MM-dd HH:mm:ss",
            null, System.Globalization.DateTimeStyles.None, out var built));
        Assert.True(built <= DateTime.Now);
        Assert.True(built.Date >= new DateTime(2026, 9, 4));
    }
}

[Collection("RealApp")]
public sealed class BuildStampDisplayTests
{
    private readonly RealAppHost _app;

    public BuildStampDisplayTests(RealAppHost app) => _app = app;

    [Fact]
    public void Wordmark_Shows_The_Build_Stamp_As_Superscript()
    {
        _app.Run(() =>
        {
            var window = new MainWindow();
            try
            {
                // TopBar is its own namescope (UserControl) — FindName from the
                // control, never from the window (MyMistakes: namescoped FindName).
                var topBar = (UserControl)window.FindName("TopBar")!;
                var stamp = (Run)topBar.FindName("BuildIdStamp")!;
                Assert.Equal(BuildStamp.Id, stamp.Text);
                Assert.Equal(BaselineAlignment.Superscript, stamp.BaselineAlignment);
            }
            finally
            {
                window.Close();
            }
        });
    }
}