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

namespace ytLive.Tests;

/// <summary>
/// The brand logo is one locked image layer per scene, directly above the background.
/// </summary>
[Collection("RealApp")]
public sealed class BrandLogoTests
{
    private readonly RealAppHost _app;

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

    [Fact]
    public void Every_Scene_Gets_One_Brand_Logo_Directly_Above_The_Background()
    {
        _app.Run(Run);
    }

    private static void Run()
    {
        var tempDb = System.IO.Path.Combine(System.IO.Path.GetTempPath(), $"ytLlive-brand-{Guid.NewGuid():N}.db");
        MainViewModel.LayoutPathOverride = tempDb;
        try
        {
            using (var schema = new LayoutStore(tempDb)) { }
            Microsoft.Data.Sqlite.SqliteConnection.ClearAllPools();

            var vm = new MainViewModel();

            foreach (var scene in vm.Scenes)
            {
                var logos = scene.Elements.OfType<Source>().Where(s => s.IsBrandLogo).ToList();
                Assert.Single(logos);
                var index = scene.Elements.IndexOf(logos[0]);
                var background = scene.Elements.OfType<Source>().First(s => s.IsBackground);
                Assert.Equal(scene.Elements.IndexOf(background) + 1, index);
            }

            var staged = vm.StagedScene!;
            var logo = staged.Elements.OfType<Source>().First(s => s.IsBrandLogo);
            vm.RemoveElement(logo);
            Assert.Contains(logo, staged.Elements);
        }
        finally
        {
            MainViewModel.LayoutPathOverride = null;
            Microsoft.Data.Sqlite.SqliteConnection.ClearAllPools();
            try { System.IO.File.Delete(tempDb); } catch { }
        }
    }
}