using System;
using System.IO;
using System.Windows;
using System.Windows.Input;
using Microsoft.Data.Sqlite;
using Xunit;
using ytLive.ViewModels;

namespace ytLive.Tests;

/// <summary>
/// 2026-11-05 report: "the gear-icon tab and the socials tab do not retract when I click off the div,
/// like the other tabs." Both drawers live in the same host as Stream Settings / YPP / TEST, but the
/// window's click-outside guard only knew about the other three.
/// </summary>
[Collection("RealApp")]
public sealed class DrawerOutsideClickTests
{
    private readonly RealAppHost _app;

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

    [Fact]
    public void ClickingOutside_RetractsTheSettingsAndSocialsDrawers()
    {
        _app.Run(() =>
        {
            var tempDb = Path.Combine(Path.GetTempPath(), $"ytLlive-drawers-{Guid.NewGuid():N}.db");
            MainViewModel.LayoutPathOverride = tempDb;
            var window = new MainWindow();
            var vm = (MainViewModel)window.DataContext;
            try
            {
                window.Show();
                window.UpdateLayout();

                // Open the gear drawer, then click somewhere that is not the drawer host.
                vm.ToggleSettingsDrawer();
                Assert.True(vm.SettingsDrawerOpen);

                RaiseOutsideClick(window);
                Assert.False(vm.SettingsDrawerOpen);

                // …and clicking INSIDE the drawer must not close it, or the panel would be unusable.
                vm.ToggleSettingsDrawer();
                Assert.True(vm.SettingsDrawerOpen);
                var pane = (System.Windows.Controls.UserControl)window.FindName("PreviewPane")!;
                var host = (FrameworkElement)pane.FindName("TextPullOutHost")!;
                RaiseClickOn(host);
                Assert.True(vm.SettingsDrawerOpen);
            }
            finally
            {
                window.Close();
                MainViewModel.LayoutPathOverride = null;
                SqliteConnection.ClearAllPools();
                try { File.Delete(tempDb); } catch { /* best-effort cleanup */ }
            }
        });
    }

    /// <summary>A left-button-down that originates on the window itself — outside the preview, the left
    /// panel and the drawer host, which is exactly the case the guard handles.</summary>
    private static void RaiseOutsideClick(Window window) => RaiseClickOn(window);

    private static void RaiseClickOn(UIElement target)
    {
        var args = new MouseButtonEventArgs(Mouse.PrimaryDevice, Environment.TickCount, MouseButton.Left)
        {
            RoutedEvent = UIElement.PreviewMouseLeftButtonDownEvent,
            Source = target,
        };
        target.RaiseEvent(args);
    }
}