using System;
using System.IO;
using System.Linq;
using Microsoft.Data.Sqlite;
using Xunit;
using ytLive.Models;
using ytLive.ViewModels;

namespace ytLive.Tests;

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

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

    [Fact]
    public void SettingsRestoreAll_ReplacesEditedScenesWithFactoryLayout() => _app.Run(() =>
    {
        var tempDb = Path.Combine(Path.GetTempPath(), $"ytLlive-layout-reset-{Guid.NewGuid():N}.db");
        MainViewModel.LayoutPathOverride = tempDb;
        MainViewModel? vm = null;
        try
        {
            vm = new MainViewModel();
            var starting = vm.Scenes.Single(scene => SceneCatalog.Is(scene.Name, SceneCatalog.Starting));
            starting.Elements.Add(new Source
            {
                Name = "Creator-only layer",
                Type = SourceType.TextOverlay,
                TextContent = "Not in factory layout",
            });
            vm.SaveLayoutNow();

            Assert.True(vm.RestoreAllLayoutDefaultsCommand.CanExecute(null));
            vm.RestoreAllLayoutDefaultsCommand.Execute(null);

            Assert.DoesNotContain(vm.Scenes.SelectMany(scene => scene.Elements).OfType<Source>(),
                source => source.Name == "Creator-only layer");

            var settingsXaml = SourceAssert.Text("Controls", "SettingsDrawer.xaml");
            Assert.Contains("Content=\"Restore all scenes\"", settingsXaml);
            Assert.Contains("Command=\"{Binding RestoreAllLayoutDefaultsCommand}\"", settingsXaml);
        }
        finally
        {
            vm?.Shutdown();
            MainViewModel.LayoutPathOverride = null;
            SqliteConnection.ClearAllPools();
            try { File.Delete(tempDb); } catch { /* best-effort cleanup */ }
        }
    });

    [Fact]
    public void SettingsRestoreStagedScene_LeavesOtherSceneEditsAndSelectionIntact() => _app.Run(() =>
    {
        var tempDb = Path.Combine(Path.GetTempPath(), $"ytLlive-layout-reset-{Guid.NewGuid():N}.db");
        MainViewModel.LayoutPathOverride = tempDb;
        MainViewModel? vm = null;
        try
        {
            vm = new MainViewModel();
            var starting = vm.Scenes.Single(scene => SceneCatalog.Is(scene.Name, SceneCatalog.Starting));
            var brb = vm.Scenes.Single(scene => SceneCatalog.Is(scene.Name, SceneCatalog.Brb));
            starting.Elements.Add(new Source { Name = "Keep this edit", Type = SourceType.TextOverlay });
            brb.Elements.Add(new Source { Name = "Reset this edit", Type = SourceType.TextOverlay });
            vm.SaveLayoutNow();
            vm.StagedScene = brb;

            Assert.True(vm.RestoreStagedSceneDefaultsCommand.CanExecute(null));
            vm.RestoreStagedSceneDefaultsCommand.Execute(null);

            Assert.Contains(vm.Scenes.Single(scene => SceneCatalog.Is(scene.Name, SceneCatalog.Starting))
                .Elements.OfType<Source>(), source => source.Name == "Keep this edit");
            Assert.DoesNotContain(vm.Scenes.Single(scene => SceneCatalog.Is(scene.Name, SceneCatalog.Brb))
                .Elements.OfType<Source>(), source => source.Name == "Reset this edit");
            Assert.True(SceneCatalog.Is(vm.StagedScene?.Name, SceneCatalog.Brb));

            var settingsXaml = SourceAssert.Text("Controls", "SettingsDrawer.xaml");
            Assert.Contains("Content=\"Restore staged scene\"", settingsXaml);
            Assert.Contains("Command=\"{Binding RestoreStagedSceneDefaultsCommand}\"", settingsXaml);
        }
        finally
        {
            vm?.Shutdown();
            MainViewModel.LayoutPathOverride = null;
            SqliteConnection.ClearAllPools();
            try { File.Delete(tempDb); } catch { /* best-effort cleanup */ }
        }
    });
}