import 'package:cyberhybridhub/services/questions_hub_service.dart';
import 'package:cyberhybridhub/widgets/swipe_question_tile.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  setUp(() {
    // Ensure the panel is marked open so the tile captures keyboard events.
    QuestionsHubService.instance.questionPanelOpen.value = true;
  });

  tearDown(() {
    QuestionsHubService.instance.questionPanelOpen.value = false;
  });

  testWidgets('allows swiping right at zero to submit answer', (tester) async {
    num? submittedValue;

    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          body: SwipeQuestionTile(
            questionId: 'test-q-1',
            onSwipeRight: (val) async {
              submittedValue = val;
              return null;
            },
            onSwipeLeft: () async {},
          ),
        ),
      ),
    );

    // Swipe right starting from the center of the widget.
    // Swipe distance needs to exceed _swipeThreshold (96).
    final Finder tileFinder = find.byType(SwipeQuestionTile);
    final Offset start = tester.getCenter(tileFinder);
    
    // Drag right by 200 pixels.
    await tester.dragFrom(start, const Offset(200, 0));
    await tester.pumpAndSettle();

    expect(submittedValue, 0);
  });

  testWidgets('allows swiping left at zero to defer question', (tester) async {
    bool deferred = false;

    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          body: SwipeQuestionTile(
            questionId: 'test-q-2',
            onSwipeRight: (_) async => null,
            onSwipeLeft: () async {
              deferred = true;
            },
          ),
        ),
      ),
    );

    // Swipe left starting from the center of the widget.
    final Finder tileFinder = find.byType(SwipeQuestionTile);
    final Offset start = tester.getCenter(tileFinder);
    
    // Drag left by 200 pixels.
    await tester.dragFrom(start, const Offset(-200, 0));
    await tester.pumpAndSettle();

    expect(deferred, true);
  });

  testWidgets('allows right arrow key holding/press at zero to submit answer', (tester) async {
    num? submittedValue;

    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          body: SwipeQuestionTile(
            questionId: 'test-q-3',
            onSwipeRight: (val) async {
              submittedValue = val;
              return null;
            },
            onSwipeLeft: () async {},
          ),
        ),
      ),
    );
    await tester.pump();

    // Simulate holding right arrow key.
    await tester.sendKeyDownEvent(LogicalKeyboardKey.arrowRight);
    await tester.pump();
    await tester.pump(const Duration(seconds: 2)); // Wait past hold edge duration (1s)
    await tester.sendKeyUpEvent(LogicalKeyboardKey.arrowRight);
    await tester.pumpAndSettle();

    expect(submittedValue, 0);
  });

  testWidgets('allows left arrow key holding/press at zero to defer question', (tester) async {
    bool deferred = false;

    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          body: SwipeQuestionTile(
            questionId: 'test-q-4',
            onSwipeRight: (_) async => null,
            onSwipeLeft: () async {
              deferred = true;
            },
          ),
        ),
      ),
    );
    await tester.pump();

    // Simulate holding left arrow key.
    await tester.sendKeyDownEvent(LogicalKeyboardKey.arrowLeft);
    await tester.pump();
    await tester.pump(const Duration(seconds: 2));
    await tester.sendKeyUpEvent(LogicalKeyboardKey.arrowLeft);
    await tester.pumpAndSettle();

    expect(deferred, true);
  });
}