using System.Windows;
using VideoDownloader.App;
using VideoDownloader.Tests.Infrastructure;

namespace VideoDownloader.Tests.E2E;

/// <summary>
/// E2E (Phase A): 실제 MainWindow 기동 → WebView2 초기화 → about:blank 탐색 →
/// 다중 탭(생성/전환/닫기/Ctrl+Shift+T 복원) + 검색 바 + 전체화면까지 실 창에서 검증.
/// </summary>
[Collection("E2E")]
public class MainWindowSmokeE2ETests
{
    [Fact]
    public async Task MainWindow_기동_탐색_탭전환_닫기_복원_검색바_전체화면_E2E()
    {
        using var sta = StaDispatcher.Start();
        WpfTestApp.Ensure(sta.Dispatcher);
        var ok = await sta.InvokeAsync(async () =>
        {
            var window = new MainWindow();
            window.Show();

            // 첫 탭 WebView2 초기화 대기
            var first = await Wait.Until(
                () => Task.FromResult(window.Tabs.ActiveTab),
                t => t?.Core != null, 30000);
            var cv1 = first.Core!;

            // about:blank 탐색 (네트워크 불필요)
            window.NavigateTo("about:blank");
            await Wait.Until(() => Task.FromResult(cv1.Source ?? ""), s => s.Contains("about:blank"), 15000);

            // ── Phase A: 다중 탭 ──
            var tab2 = window.Tabs.NewTab();
            var cv2 = await Wait.Until(() => Task.FromResult(tab2.Core), c => c != null, 30000);
            cv2.NavigateToString("<html><body><p id='x'>hello-tab2</p></body></html>");
            await WaitUntilNavCompleted(cv2);

            Assert.NotSame(first, window.Tabs.ActiveTab); // NewTab 이 활성화
            Assert.Equal(2, window.Tabs.Tabs.Count);

            // 탭 전환: 첫 탭으로
            window.Tabs.Activate(first);
            var switched = ReferenceEquals(window.Tabs.ActiveTab, first);

            // 탭 닫기 → 오른쪽 이웃 활성화 → Ctrl+Shift+T 복원
            window.Tabs.CloseTab(tab2);
            var countAfterClose = window.Tabs.Tabs.Count;
            var reopened = window.Tabs.ReopenClosedTab();
            var countAfterReopen = window.Tabs.Tabs.Count;

            // ── T1-3 검색 바 ──
            window.OpenFind();
            var findVisible = window.FindBar.Visibility == Visibility.Visible;
            window.CloseFind();
            var findCollapsed = window.FindBar.Visibility == Visibility.Collapsed;

            // ── T1-11 전체화면 ──
            window.ToggleFullscreen();
            var toolbarHidden = window.ToolbarRow.Visibility == Visibility.Collapsed
                             && window.TabStripRow.Visibility == Visibility.Collapsed;
            window.ToggleFullscreen();
            var toolbarBack = window.ToolbarRow.Visibility == Visibility.Visible;

            window.Close();
            return (init: true, switched, countAfterClose, reopened: reopened != null, countAfterReopen,
                    findVisible, findCollapsed, toolbarHidden, toolbarBack);
        });

        Assert.True(ok.init, "WebView2 초기화 실패");
        Assert.True(ok.switched, "탭 전환 실패");
        Assert.True(ok.countAfterClose == 1, $"탭 닫기 후 개수 오류: {ok.countAfterClose}");
        Assert.True(ok.reopened, "닫은 탭 복원 실패");
        Assert.True(ok.countAfterReopen == 2, $"복원 후 개수 오류: {ok.countAfterReopen}");
        Assert.True(ok.findVisible, "검색 바 미표시");
        Assert.True(ok.findCollapsed, "검색 바 미닫힘");
        Assert.True(ok.toolbarHidden, "전체화면에서 크롬 미숨김");
        Assert.True(ok.toolbarBack, "전체화면 복원 실패");
    }

    private static Task WaitUntilNavCompleted(Microsoft.Web.WebView2.Core.CoreWebView2 cv)
    {
        var tcs = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
        EventHandler<Microsoft.Web.WebView2.Core.CoreWebView2NavigationCompletedEventArgs>? h = null;
        h = (_, _) => { cv.NavigationCompleted -= h; tcs.TrySetResult(); };
        cv.NavigationCompleted += h;
        return tcs.Task.WaitAsync(TimeSpan.FromSeconds(15));
    }
}